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1.
Int. j. morphol ; 41(6): 1653-1659, dic. 2023. tab
Article in English | LILACS | ID: biblio-1528793

ABSTRACT

SUMMARY: Monitoring of body composition and cardiophysiological parameters are main part of the general health status of handball players and significant indicators of their physical fitness. The assessment of body components, especially skeletal muscle mass and body fat mass are important because of their influence on sport performance. The aim of this study is to determine the body composition and cardiophysiological characteristics of elite handball players from Republic of North Macedonia. 27 male HB players from two top ranking teams from RNM were tested ergometrically with Bruce protocol for determination of maximal oxygen consumption; body analysis was made with bioelectrical impedance analyzer, InBody 720. Anthropometric parameters were as follows: mean height was 190.4±7.8 cm and weight 96.3±15.5 kg, skeletal muscle mass (SMM)=47.11±6.69 kg; BMI=26.38±3.1; BF%=15.04±6.01 and WHR=0.9±1.8. The result of ergometrical test produce mean VO2 max=43.92 ml/kg/min which is 100.46 % of reference value. The body composition of elite international handball players from the top handball teams in Republic of North Macedonia showed similar body components as other European handball players. The obesity diagnose parameters were negatively associated with exercise time and maximal oxygen consumption.


El seguimiento de la composición corporal y los parámetros cardiofisiológicos son una parte principal del estado de salud general de los jugadores de balonmano y son indicadores importantes de su condición física. La evaluación de los componentes corporales, especialmente la masa muscular esquelética y la masa grasa corporal, son importantes debido a su influencia en el rendimiento deportivo. El objetivo de este estudio fue determinar la composición corporal y las características cardiofisiológicas de jugadores de balonmano de élite de la República de Macedonia del Norte. Se evaluaron 27 jugadores masculinos de HB de dos equipos de primer nivel de RNM ergométricamente con el protocolo de Bruce para determinar el consumo máximo de oxígeno; el análisis corporal se realizó con el analizador de impedancia bioeléctrica InBody 720. Los parámetros antropométricos fueron los siguientes: talla media 190,4±7,8 cm y peso 96,3±15,5 kg, masa músculo esquelética (SMM)=47,11±6,69 kg; IMC=26,38±3,1; %GC=15,04±6,01 y RCC=0,9±1,8. El resultado de la prueba ergométrica produce un VO2 máximo medio = 43,92 ml/kg/ min, que es el 100,46 % del valor de referencia. La composición corporal de los jugadores de balonmano internacionales de élite de los mejores equipos de balonmano de la República de Macedonia del Norte mostró componentes corporales similares a los de otros jugadores de balonmano europeos. Los parámetros diagnósticos de obesidad se asociaron negativamente con el tiempo de ejercicio y el consumo máximo de oxígeno.


Subject(s)
Humans , Male , Adult , Body Composition , Athletes , Cardiorespiratory Fitness , Oxygen Consumption , Anthropometry , Cross-Sectional Studies , Republic of North Macedonia
2.
Int. j. morphol ; 41(5): 1564-1569, oct. 2023. ilus, tab
Article in English | LILACS | ID: biblio-1521036

ABSTRACT

SUMMARY: The purpose of this study was to reveal the differences between ACTN3 genotype (RR, RX, XX) and aerobic performance [Yo-Yo IRT1 (m), VO2 max (ml/kg/min)] in professional and regional amateur league soccer players and to reveal which of these parameters was a distinctive factor in these athletes.71 professional soccer players (age: 23.66 ± 4.11 years; body height: 1.79 ± 6.99 m; body weight: 76.02 ± 6.76 kg; body fat: 11.59±3.11 %) and 62 regional amateur soccer players (age: 23.63 ±3.77 years; body height: 1.81 ± 5.77 m; body weight: 76.36 ± 7.53 kg; body fat: 15.60±4.65 %) volunteered for the study. After DNA extraction from buccal epithelial cells via a commercial kit was performed for the genetic background of the athletes, Real-Time PCR was carried out for genotyping. Furthermore, Yo-Yo IRT1 test was performed to determine the aerobic performance of the soccer players. SPSS 23 (SPSS Inc., Chicago, IL, USA) package program was used for the statistical analysis of the data obtained in the tests. Shapiro-Wilk test for normality and Levene's test for homogeneity of variance were performed. Chi-Square, Independent Sample T Test and One Way ANOVA test were used in the analysis of the parameters. Statistical significance was set as p0.05); however, there was a statistical significance in favor of professional soccer players in terms of aerobic parameters (p<0.05). Consequently, it can be said that aerobic performance is the distinguishing factor, not the ACTN3 gene, in soccer players.


El objetivo de este estudio fue revelar las diferencias entre el genotipo ACTN3 (RR, RX, XX) y el rendimiento aeróbico [Yo-Yo IRT1 (m), VO2 max (ml/kg/min)] en jugadores de fútbol de ligas profesionales y amateurs regionales y determinar cuál de estos parámetros es un factor distintivo en estos deportistas. 71 futbolistas profesionales (edad: 23,66 ±4,11 años; altura corporal: 1,79 ± 6,99 m; peso corporal: 76,02 ± 6,76 kg; grasa corporal: 11,59±3,11 %) y 62 jugadores de fútbol amateur regionales (edad: 23,63 ± 3,77 años; altura corporal: 1,81 ± 5,77 m; peso corporal: 76,36 ± 7,53 kg; grasa corporal: 15,60 ± 4,65 %) se ofrecieron como voluntarios para el estudio. Después de realizar la extracción de ADN de las células epiteliales orales mediante un kit comercial para obtener los antecedentes genéticos de los atletas, se llevó a cabo una PCR en tiempo real para el genotipado. Además, se realizó la prueba Yo-Yo IRT1 para determinar el rendimiento aeróbico de los futbolistas. Para el análisis estadístico de los datos obtenidos en las pruebas se utilizó el programa SPSS 23 (SPSS Inc., Chicago, IL, EE. UU.). Se realizó la prueba de normalidad de Shapiro- Wilk y la prueba de homogeneidad de la varianza de Levene. En el análisis de los parámetros se utilizaron Chi-cuadrado, prueba T para muestra independiente y prueba ANOVA unidireccional. La significancia estadística se estableció en p0,05); sin embargo, hubo significación estadística a favor de los futbolistas profesionales en cuanto a los parámetros aeróbicos (p<0,05). En consecuencia, se puede decir que el rendimiento aeróbico es el factor distintivo, no el gen ACTN3, en los jugadores de fútbol.


Subject(s)
Humans , Male , Adult , Young Adult , Physical Endurance/genetics , Polymorphism, Genetic , Soccer , Actinin/genetics , Oxygen Consumption
3.
Int. j. morphol ; 41(2): 577-582, abr. 2023. tab
Article in Spanish | LILACS | ID: biblio-1440336

ABSTRACT

El objetivo de este estudio fue establecer relaciones entre las variables de rendimiento físico e índices antropométricos según la edad de bomberos adultos chilenos, en servicio activo, provenientes de la región de Valparaíso. Participaron 68 bomberos, hombres, sanos, en servicio activo, que fueron divididos en dos grupos según edad; 30 años (n = 32; 40,6 ± 8,5 años). Se evaluaron las variables antropométricas de masa corporal (MC), estatura, perímetro de cintura (PC), índice de masa corporal (IMC] = Peso /estatura2 [m]) e índice cintura-estatura (ICE). La capacidad de salto vertical fue evaluada con los protocolos de Squat Jump, Countermovement Jump y Abalakov Jump. La resistencia en carrera fue estimada con la prueba de Course Navette y se calculó indirectamente el consumo de oxígeno (VO2). Las variables antropométricas para el grupo > 30 años fueron mayores en comparación al grupo de menor edad en MC (p = 0.027), IMC (p = 0.015), PC (p 0.05) entre ambos grupos. Existió una correlación significativa positiva entre la edad y las variables de MC (r = 0,252), IMC (r = 0,307), ICE (r = 0,431) y PC (r= 0,401). Al comparar ambos grupos de edad hubo diferencias antropométricas, pero no en la condición física. Se sugiere reforzar programas de entrenamiento para optimizar la composición corporal y capacidad física de bomberos en servicio activo para responder a las exigentes tareas que demanda este ámbito laboral.


SUMMARY: The aim of this study was 1) to compare anthropometric characteristics, jumping ability, and running endurance according to age and 2) to determine the relationship between age and physical performance parameters in Chilean adult firefighters in active service from the Valparaíso region. Sixty-eight healthy male firefighters, in active service, were divided into two groups according to age; 30 years (n = 32; 40.6 ± 8.5 years) participated. The anthropometric variables of body mass (BM), height, waist circumference (WC), body mass index (BMI = weight/height2 [m]) and waist-to-height ratio (WHR) were evaluated. Vertical jumping ability was assessed with the Squat Jump, Countermovement Jump and Abalakov Jump protocols. Running endurance was estimated with the Course Navette test and oxygen consumption (VO2) was calculated indirectly. Anthropometric variables for the > 30 years group were higher compared to the younger age group in BM (p = 0.027), BMI (p = 0.015), WC (p 0.05). There was a significant positive correlation between age and the variables of BM (r = 0.252), BMI (r = 0.307), WHR (r = 0.431) y WC (r= 0.401). When comparing both age groups, there were anthropometric differences, but not in physical condition. It is suggested to reinforce training programs to optimize the body composition and physical capacity of firefighters in active service in order to respond to the demanding tasks demanded by this work environment.


Subject(s)
Humans , Male , Adult , Anthropometry , Firefighters , Physical Functional Performance , Oxygen Consumption , Physical Endurance , Running , Body Mass Index , Age Factors , Athletic Performance , Waist Circumference , Waist-Height Ratio
4.
Rev. bras. med. esporte ; 29: e2022_0284, 2023. tab
Article in English | LILACS | ID: biblio-1407658

ABSTRACT

ABSTRACT Introduction: Synchronized swimming is a sport of artistic expression, skill, and physical fitness. Explosive, high-intensity movements rely mainly on the athlete's good basal strength. Although China attaches great importance to the physical training of synchronized swimming athletes, there is no theoretical achievement in consolidating specific training. Objective: To analyze the impact of CORE strengthening on the physical training of synchronized swimming athletes. Methods: This article selects 30 synchronized swimmers as volunteers for the research. A basal metabolism test was used to verify the maximal oxygen consumption (VO2max), ventilatory anaerobic threshold (VT), and other indicators. The isokinetic force measurement system measured the athletes' maximum lumbar-abdominal muscle flexion/extension torque, explosive strength, fast muscle strength capacity, total work, and anti-fatigue capacity. Results: The synchronized limb training results of the swimming team were positively correlated with the stability of the CORE muscles. There is a positive relationship between 30 years old and maximal strength training and performance in athletes. Abdominal muscular endurance showed the highest correlation coefficient with synchronized swimming performance. Conclusion: Coaches should organize adequate strength training according to the growth and development characteristics of athletes and the characteristics of synchronized swimming movements. In this way, an excellent physical training effect can be achieved by CORE training. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.


RESUMO Introdução: O nado sincronizado é um esporte de expressão artística, habilidade e aptidão física. Movimentos explosivos, de alta intensidade, dependem principalmente da boa força basal do atleta. Embora a China atribua grande importância ao treinamento físico de atletas do nado sincronizado, não há conquista teórica na consolidação de um treinamento específico. Objetivo: Analisar o impacto da aplicação do fortalecimento do core sobre o treinamento físico de atletas do nado sincronizado. Métodos: Este artigo seleciona 30 nadadores sincronizados como voluntários para a pesquisa. Um teste de metabolismo basal foi utilizado para verificar o consumo máximo de oxigênio (VO2max), o limiar anaeróbico ventilatório (VT) e outros indicadores. Utilizou-se o sistema de medição de força isocinética para medir o torque máximo de flexão/extensão muscular lombar-abdominal dos atletas, força explosiva, capacidade de força rápida muscular, trabalho total e capacidade anti-fadiga. Resultados: Os resultados de treinamento dos membros sincronizados da equipe de natação foram positivamente correlacionados com a estabilidade dos músculos do core. Há uma relação positiva entre os 30 anos de idade e o melhor desempenho no treinamento de força máxima em atletas. A resistência muscular abdominal apresentou o maior coeficiente de correlação com desempenho sincronizado de natação. Conclusão: Os treinadores devem organizar o treinamento de força adequado de acordo com as características de crescimento e desenvolvimento dos atletas e as características dos movimentos sincronizados de natação. Desta forma, um excelente efeito de treinamento físico pode ser alcançado pelo treino do core. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.


RESUMEN Introducción: La natación sincronizada es un deporte de expresión artística, de habilidad y de condición física. Los movimientos explosivos y de alta intensidad dependen principalmente de la buena fuerza basal del deportista. Aunque China atribuye una gran importancia a la preparación física de las atletas de natación sincronizada, no existe ningún logro teórico en la consolidación de un entrenamiento específico. Objetivo: Analizar el impacto de la aplicación del fortalecimiento del core en la preparación física de las atletas de natación sincronizada. Métodos: En este artículo se seleccionan 30 nadadores de sincronizados como voluntarios para la investigación. Se utilizó una prueba de metabolismo basal para verificar el consumo máximo de oxígeno (VO2max), el umbral anaeróbico ventilatorio (VT) y otros indicadores. Fue aplicado el sistema de medición de la fuerza isocinética para medir el par máximo de flexión/extensión de los músculos lumbares-abdominales de los atletas, la fuerza explosiva, la capacidad de fuerza muscular rápida, el trabajo total y la capacidad antifatiga. Resultados: Los resultados del entrenamiento de las extremidades sincronizadas del equipo de natación se correlacionaron positivamente con la estabilidad de los músculos del core. Existe una relación positiva entre los 30 años de edad y la fuerza máxima de entrenamiento y el rendimiento en los atletas. La resistencia muscular abdominal mostró el mayor coeficiente de correlación con el rendimiento de la natación sincronizada. Conclusión: Los entrenadores deben organizar un entrenamiento de fuerza adecuado en función de las características de crecimiento y desarrollo de los deportistas y de las características de los movimientos de la natación sincronizada. De este modo, se puede conseguir un excelente efecto de entrenamiento físico entrenando el core. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.


Subject(s)
Humans , Oxygen Consumption/physiology , Swimming/physiology , Athletic Performance , Resistance Training/methods , Muscle Tonus , Muscle Strength
5.
Rev. cuba. invest. bioméd ; 422023. ilus, tab
Article in Spanish | LILACS, CUMED | ID: biblio-1508218

ABSTRACT

Introducción: El entrenamiento deportivo es un proceso que requiere una planificación orientada a la adaptación del cuerpo a las cargas internas versus cargas externas; de allí, surge la necesidad de conocer el comportamiento de algunas enzimas musculoesqueléticas a través del control bioquímico y fisiológico del entrenamiento en el atletismo de medio fondo. Objetivo: Analizar los cambios enzimáticos de la creatinfosfoquinasa y la lactodeshidrogenasa durante el entrenamiento anaeróbico láctico y su influencia en la capacidad aeróbica en atletas de medio fondo. Método: Se utilizó el método descriptivo comparativo con una muestra de 20 sujetos aleatorizados en dos grupos: experimental y control; el análisis se realizó bajo el modelo estadístico Anova descriptiva, pruebas T y diseño de medidas repetidas con un intervalo del 95 por ciento de confianza (p<0,05). Resultados: En las variables creatinfosfoquinasa y lactodeshidrogenasa inicial y final no hubo variaciones significativas intergrupos; se observaron diferencias en la creatinfosfoquinasa en varianza (p=0,022) del orden del 97,8 por ciento; que en promedio (p=0,088) representó los niveles alcanzados del 91,2 por ciento. En las medidas repetidas no se presentaron cambios estadísticamente significativos intergrupos. Para la variable del VO2máx se aplicó la prueba T para comparar los estados inicial y final en cada grupo y hubo diferencias en ambos grupos (control p=0,002; experimental p=0,000). Conclusiones: No hubo cambios enzimáticos importantes durante los entrenamientos anaeróbico láctico y aeróbico, a su vez, el entrenamiento anaeróbico láctico si tuvo influencia en la capacidad aeróbica(AU)


Introduction: Sports training is a process that requires a planning oriented to the adaptation of the body to internal loads versus external loads; from there, arises the need to know the behavior of some musculoskeletal enzymes through the biochemical and physiological control of training in middle-distance athletics. Objective: To analyze the enzymatic changes of creatine phosphokinase and lactodehydrogenase during lactic anaerobic training and their influence on aerobic capacity in middle-distance athletes. Methods: The descriptive comparative method was used with a sample of 20 subjects randomized in two groups: experimental and control; the analysis was performed under the descriptive Anova statistical model, T-tests and repeated measures design with a 95 percent confidence interval (p<0.05). Results: In the initial and final creatine phosphokinase and lactodehydrogenase variables, there were no significant intergroup variations; differences were observed in creatine phosphokinase regarding variance or standard deviation (p=0.022) in the order of 97.8 percent; which in average (p=0.088) represented the levels reached of 91.2 percent. In the repeated measures, there were no statistically significant intergroup changes. For the VO2max variable, the T-test was applied to compare the initial and final states in each group and there were differences in both groups (control p=0.002; experimental p=0.000). Conclusions: There were no important enzymatic changes during lactic anaerobic and aerobic training, and lactic anaerobic training had an influence on aerobic capacity(AU)


Subject(s)
Humans , Exercise , Endurance Training/methods , Oxygen Consumption , Track and Field/education , Comparative Study , Epidemiology, Descriptive
6.
Biomédica (Bogotá) ; 42(4): 611-622, oct.-dic. 2022. tab, graf
Article in Spanish | LILACS | ID: biblio-1420310

ABSTRACT

Introducción. La capacidad física cardiorrespiratoria es un predictor de mortalidad por enfermedad cardiovascular y por todas las causas. Su diagnóstico en diferentes grupos tiene utilidad clínica y en salud pública. Objetivo. Evaluar la validez y reproducibilidad de un método sin ejercicio implementado por la NASA (National Aeronautics and Space Administration), para estimar el volumen máximo de oxígeno (VO2máx) consumido en adultos universitarios. Materiales y métodos. Estudio de validación de una prueba que incluyó 94 individuos sanos de ambos sexos (18 a 55 años). La prueba de referencia fue la ergoespirometría. La validez y la reproducibilidad se evaluaron mediante el coeficiente de correlación intraclase (Intraclass Correlation Coefficient, CCI) y el método de Bland-Altman. Resultados. Del total de los individuos incluidos en el estudio, 48,9 % fueron mujeres. La media de edad de los participantes fue de 30,54 ± 9,33 años y, la del VO2máx, fue de 41,29 ± 9,54 mlO2.kg-1.min-1. Se encontró una diferencia de medias de VO2máx entre la ergoespirometría y el estimado por el método implementado por la NASA de 3,41 ± 5,64 mlO2.kg-1.min-1. La concordancia entre los dos métodos fue buena, con un coeficiente de correlación intraclase de 0,858 (IC95% 0,672-0,926). El porcentaje de error fue del 29,70 %. La reproducibilidad de las dos estimaciones por el método implementado por la NASA fue excelente, con un coeficiente de correlación intraclase de 0,986 (IC95% 0,927-0,995). Conclusiones. El método NASA es válido y reproducible para estimar el VO2máx en adultos universitarios; además, es seguro y de fácil aplicación. Se recomienda la estimación de la capacidad física cardiorrespiratoria para mejorar la tamización en los programas de riesgo cardiometabólico e implementar intervenciones oportunas.


Introduction: Cardiorespiratory fitness is a predictor of cardiovascular and all-cause mortality. Its assessment in different groups has clinical and public health usefulness. Objective: To evaluate the validity and reproducibility of a no-exercise method [National Aeronautics and Space Administration (NASA) method] to estimate the maximum oxygen consumption (VO2máx) in college adults. Materials and methods: This study included 94 healthy individuals of both sexes (1855 years). The gold standard was ergospirometry. The validity and reproducibility were evaluated with the intraclass correlation coefficient (ICC) and the Bland-Altman method. Results: Among the participants, we found a mean age of 30.54 ± 9.33 years and a VO2máx of 41.29 ± 9.54 ml O2kg-1-min-1; 48.9 % were women. A mean difference of VO2máx between ergospirometry and that estimated by the NASA method of 3.41 ± 5.64 ml O2.kg-1. min-1 was found. The concordance between the two methods was good, with an ICC of 0.858 (CI95% 0.672-0.926). The percentage of error was 29.70 %. The reproducibility of the two estimates by the NASA method was excellent, with an ICC of 0.986 (CI95% 0.927-0.995). Conclusions: The NASA method is valid and reproducible to estimate VO2máx in college adults. In addition, it is safe and easy to apply. Estimating cardiorespiratory fitness is recommended to improve screening in cardiometabolic risk programs and to implement timely interventions.


Subject(s)
Cardiorespiratory Fitness , Oxygen Consumption , Prognosis , Reproducibility of Results
7.
MHSalud ; 19(2)dic. 2022.
Article in English | LILACS, SaludCR | ID: biblio-1405526

ABSTRACT

Abstract Background: Maximum oxygen consumption is an indicator of cardiorespiratory fitness. Aim: The purpose was, first, to relate and compare the V̇O2max as the dependent variable with the estimated distance in the six-minute walk test (SMWT) as the independent variable in university students and, secondly, to relate the distance (dependent) with demographic and anthropometric variables (independents). Methodology: A correlational, descriptive, and quantitative study with a non-experimental design was conducted on 110 university students. In the study, basic anthropometry and vital signs were measured. A direct method of V̇O2max (Bruce test) on a treadmill was applied. Then, the distance covered in the SMWT was evaluated with two equations available in the scientific literature. Differences between men and women were measured in the tests, the correlation between the distances estimated with V̇O2max and anthropometric variables, and repeated ANOVA measurement tests between V̇O2max and estimated distance were analyzed with the SPSS v.22 program (p<0.05). Results: Significant correlations were found between V̇O2max and estimated distances (p<0.05) in the total sample, men and women, and in some cases, the distance correlated with gender, age, weight, height, and BMI (p<0.05). However, there were differences between V̇O2max and distances estimated in the SMWT (p<0.001). Conclusions: The V̇O2max measurement method is different from the distance prediction equations, although they have a significant relationship.


Resumen Antecedentes: El consumo máximo de oxígeno es un indicador de la aptitud cardiorrespiratoria. Objetivo: El objetivo fue relacionar y comparar el V̇O2máx. como variable dependiente con la distancia estimada en la prueba de caminata de seis minutos (PC6M) como variable independiente en estudiantes universitarios, a la vez relacionar la distancia (dependiente) con variables demográficas y antropométricas (independientes). Metodología: Estudio cuantitativo, no experimental, transversal, y descriptivo-correlacional en el que participaron 110 estudiantes universitarios. Se midió antropometría básica y signos vitales, y se aplicó un método directo de V̇O2máx. (Test de Bruce) en cinta rodante, luego se estimó la distancia recorrida en PC6M con dos ecuaciones disponibles en la literatura. Diferencias entre hombres y mujeres en las pruebas aplicadas, correlación entre las distancias estimadas con el V̇O2máx. y variables antropométricas, y la prueba de ANOVA de medidas repetidas entre el V̇O2máx. y las distancias estimadas fueron utilizadas con el programa SPSS v.22 (p<0,05). Resultados: Se encontró correlaciones significativas entre el V̇O2máx. y distancias estimadas (p<0,05) en la muestra, en hombres y mujeres, y en algunos casos la distancia se correlacionó con el sexo, la edad, el peso, la estatura y el IMC (p<0,05). Sin embargo, hubo diferencias entre el V̇O2máx. y las distancias estimadas en la PC6M (p<0,001). Conclusiones: El método directo de V̇O2máx. es distinto de las ecuaciones de predicción de distancia, aunque tienen relación significativa.


Resumo Antecedentes: O consumo máximo de oxigênio é um indicador de aptidão cardiorrespiratória. Objetivo: O objetivo é relacionar e comparar a V̇O2 máx. como variável dependente com a distância estimada no teste de caminhada de seis minutos (TC6M) como uma variável independente em estudantes universitários, ao mesmo tempo, relacionar a distância (dependente) com variáveis demográficas e antropométricas (independente). Metodologia: Estudo quantitativo, não-experimental, transversal, descritivo-correlativo, no qual participaram 110 estudantes universitários. Antropometria básica e sinais vitais foram medidos, e um método direto de V̇O2 máx. (teste Bruce) foi aplicado na esteira, então a distância coberta em TC6M foi estimada com duas equações disponíveis na literatura. Diferenças entre homens e mulheres nos testes aplicados, correlação entre distâncias estimadas com V̇O2 máx. e variáveis antropométricas, e medidas repetidas teste ANOVA entre V̇O2 máx. e distâncias estimadas foram usadas com SPSS v.22 (p<0,05). Resultados: Foram encontradas correlações significativas entre V̇O2 máx. e distâncias estimadas (p<0,05) na amostra, em homens e mulheres, e em alguns casos a distância correlacionada com sexo, idade, peso, altura e IMC (p<0,05). Entretanto, houve diferenças entre V̇O2 máx. e distâncias estimadas em TC6M (p<0,001). Conclusões: O método direto de V̇O2 máx. é diferente das equações de previsão de distância, embora elas tenham relações significativas.


Subject(s)
Humans , Male , Female , Adult , Oxygen Consumption/physiology , Walking/physiology , Students
8.
MHSalud ; 19(1)jun. 2022.
Article in Spanish | LILACS, SaludCR | ID: biblio-1386165

ABSTRACT

Resumen El fútbol como disciplina ha sido objeto de numerosas investigaciones que han permitido la potenciación de las cualidades de las personas deportistas para alcanzar el máximo rendimiento deportivo. El uso de nuevas herramientas ha permitido mejorar los procesos de selección de talentos y el desarrollo de las capacidades físicas, como es el caso de la dermatoglifia, que brinda información del genotipo de un individuo. El presente estudio pretende relacionar la composición corporal, la dermatoglifia y el consumo máximo de oxígeno en jugadores de fútbol categoría sub 20. La investigación fue cuantitativa, diseño no experimental, de tipo transversal. La muestra estuvo conformada por 22 futbolistas (edad 18 ± 1.1) de un club deportivo de Bogotá, a ellos se les realizó una valoración de composición corporal, se les calculó el somatotipo, se analizaron las huellas de las manos y se midió el consumo máximo de oxígeno con el Test Course Navette. Los resultados muestran predominio del somatotipo mesomorfo balanceado (53%), alta presencia de presillas "L" (66.36%), baja presencia de arcos "A" (1.82%) y un consumo máximo de oxígeno de 53.76 ± 3.73 ml/kg/min. Además, se encontraron relaciones significativas entre componentes dermatoglíficos D10-SCTL y el somatotipo endomorfo (p < 0.05), y entre el VO₂ máximo con somatotipo endomorfo y ectomorfo (p < 0.05). Se concluye que los futbolistas se caracterizan por tener una predisposición hacia la coordinación, la resistencia y la agilidad.


Abstract Soccer has generated endless research that has enhanced athlete's qualities to achieve maximum sports performance. According to the above, the use of new tools has been implemented to improve talent selection processes and develop physical abilities, as is the case with dermatoglyphics that provides information on an individual's genotype. The present study aims to relate body composition, dermatoglyphics, and maximum oxygen consumption in soccer players' category sub-20. The research had a quantitative, non-experimental, cross-sectional design. The sample comprised 22 players (age 18±1.1) from Bogota Sports Club, Colombia. They were assessed for body composition, the somatotype was calculated, handprints were analyzed, and the maximum oxygen consumption was measured with the Test Course Navette. The results show a predominance of balanced mesomorph somatotype (53%), high presence of "L" ridges (66.36 %), low presence of "A" arches (1.82%), and maximum oxygen consumption of 53.76±3.73 ml/kg/min. Furthermore, significant relationships were found between D10-SCTL dermatoglyphic components and the endomorph somatotype (p <0.05), and between the maximum VO₂ with endomorph and ectomorph somatotype (p <0.05). It is concluded that soccer players are characterized by having a predisposition towards coordination, resistance, and agility.


Resumo O futebol como disciplina tem sido objeto de inúmeras investigações que permitiram melhorar as qualidades dos desportistas para alcançar o máximo desempenho desportivo. A utilização de novas ferramentas tornou possível melhorar os processos de seleção de talentos e o desenvolvimento de capacidades físicas, como a dermatoglifia, que fornece informações sobre o genótipo de um indivíduo. O presente estudo visa relacionar a composição corporal, dermatoglifos e o consumo máximo de oxigênio nos jogadores de futebol sub-20. A pesquisa foi quantitativa, não-experimental e transversal. A amostra consistiu em 22 jogadores de futebol (18 ± 1,1 anos) de um clube desportivo de Bogotá, que foram submetidos a uma avaliação da composição corporal, foi calculado o somatotipo, foram analisadas as impressões digitais das mãos e foi medido o consumo máximo de oxigénio através do teste Course Navette. Os resultados mostram uma predominância do somatotipo mesomorfo balanceado (53%), presença elevada de presilha em "L" (66,36%), baixa presença de arcos em "A" (1,82%) e um consumo máximo de oxigênio de 53,76 ± 3,73 ml/kg/min. Além disso, foram encontradas relações significativas entre os componentes dermatoglíficos D10-SCTL e o somatotipo endomorfo (p < 0,05), e entre VO₂ máximo com somatotipo endomorfo e ectomorfo (p < 0,05). Conclui-se que os jogadores de futebol são caracterizados por uma predisposição para a coordenação, resistência e agilidade.


Subject(s)
Humans , Male , Adolescent , Adult , Soccer/classification , Dermatoglyphics/classification , Oxygen Consumption/physiology , Exercise/physiology , Colombia
10.
Rev. bras. ativ. fís. saúde ; 27: 1-10, fev. 2022.
Article in English | LILACS | ID: biblio-1418222

ABSTRACT

This study aimed to: a) investigate the most common signs and symptoms reported by people infect-ed by the COVID-19, b) compare total time and weekly level of physical activity of people between pre- and post-infection period, and c) examine the association between physical activity levels and signs and symptoms reported during the disease cycle. Twenty-two adult people (14 males and 8 females, mean age 37.9 ± 16.8 years) living in Ribeirão Preto, Brazil participated in this study. Par-ticipants received a positive diagnosis for COVID-19 by PCR. Physical activity and sitting time was assessed using the International Physical Activity Questionnaire. Variables such as body mass index and the clinical condition of the disease (signs and symptoms) were collected. The most frequent signs and symptoms reported by active and inactive individuals, respectively, were loss of taste (77.8% and 25%), headache (66.7% and 25%), coughing (66.7% and 25%), difficulty breathing (61.1% and 25%), and sore throat (61.1% and 75%). A 120-minute reduction (p = 0.010) in the total time of weekly physical activity and a 155-minute reduction (p = 0.003) of weekly moderate physical activity was observed in the pre- and post-diagnostic COVID-19 infection comparison. There was further an association between difficulty breathing and being physically inactive (odds ratio = 0.222; 95%CI: 0.094 ­ 0.527). Our findings suggest that COVID-19 had a negative impact on physical activity and that being physically active may reduce the likelihood of presenting with difficulty breathing if infected with the SARS-CoV-2 and associated disease COVID-19


Este estudo teve como objetivo: a) investigar os sinais e sintomas mais comuns relatados por pessoas infectadas por COVID-19, b) comparar o tempo total e o nível semanal de atividade física das pessoas no período pré e pós-infecção, c) examinar a associação entre os níveis de atividade física e os sinais e sintomas relatados du-rante o ciclo da doença. Participaram deste estudo 22 pessoas (14 do sexo masculino e oito do feminino, idade média 37,9 ± 16,8 anos) residentes na cidade de Ribeirão Preto, Brasil. Todos receberam diagnóstico positivo para COVID-19 via PCR. A atividade física e o tempo sentado foram avaliados por meio do Questionário Internacional de Atividade Física. Variáveis como índice de massa corporal e o quadro clínico da doença (sinais e sintomas), foram coletadas. Os sinais e sintomas mais frequentes foram perda do paladar (77,8% e 25%), dor de cabeça (66,7% e 25%), tosse (66,7% e 25%), dificuldade para respirar (61,1% e 25%) e dor gar-ganta (61,1% e 75%), para indivíduos ativos e inativos, respectivamente. Uma redução de 120 minutos (p = 0,010) no tempo total de atividade física semanal e de 155 minutos (p = 0,003) de atividade física moderada semanal foi observada na comparação pré e pós-diagnóstico por COVID-19. Houve associação entre dificul-dade para respirar e ser fisicamente inativo (odds ratio = 0,222; IC95%: 0,094 ­ 0,527). Nossos resultados sugerem que a COVID-19 teve impacto negativo na atividade física e que pessoas fisicamente ativas podem reduzir a probabilidade de apresentar dificuldade para respirar quando diagnosticadas por COVID-19


Subject(s)
Oxygen Consumption , Reference Values , Employee Performance Appraisal , Exercise Test
11.
Rev. bras. ativ. fís. saúde ; 27: 1-7, fev. 2022.
Article in Portuguese | LILACS | ID: biblio-1418225

ABSTRACT

Este estudo teve como objetivo comparar a avaliação da resistência aeróbia avaliada pelos testes de McArdle e Conconi e associar as medidas indiretas com a percepção subjetiva por meio da Escala de Capacidade Percebida (ECP). Foram recrutados 29 participantes, 17 homens e 12 mulheres, com idades iguais ou maiores de 18 anos da região de São José, Santa Catarina. Após os recrutamentos foram analisados variáveis como sexo, idade, estatura, massa corporal, frequência cardíaca e esforço físico por meio dos testes de banco de McArdle e Conconi, além da capacidade percebida por meio da ECP. A média da pontuação da ECP foi de 9,72 (DP = 1,60). O Índice de Correlação Intraclasse entre os dois testes foi considerando excelente (r = 0,939; p < 0,001). Além disso, ambas análises apresentaram associação com a variável desfecho. No entanto, o poder explicativo da Regressão Linear, considerando como variável independente o VO2max a partir do deste de McArdle foi maior (45,3%). Assim, recomenta-se a utilização da tabela de referência deste teste para identificação do VO2máx a partir da percepção subjetiva pela ECP. Desta forma, a ECP pode ser uma ferramenta valiosa na avaliação, prescrição de exercícios e em estudos epidemiológicos por sua fácil e rápida aplicabilidade em adultos ativos fisicamente


This study aimed to compare the assessment of aerobic resistance evaluated by the McArdle and Conconi tests and to associate the indirect measures with the subjective perception through the Rating of Perceived Capacity (RPC). 29 participants were recruited, 17 men and 12 women, aged 18 years or older from the region of São José-SC. After recruitment, variables such as gender, age, height, body mass, heart rate and physical effort were analyzed using the McArdle and Conconi bench tests, in addition to the perceived capac-ity through the ECP. The mean ECP score was 9.72 (SD = 1.60). The Intraclass Correlation Index between the two tests was considered excellent (r = 0.939; p < 0.001). In addition, both analyses were associated with the outcome variable. However, the explanatory power of Linear Regression, considering VO2max as an independent variable from McArdle's, was higher (45.3%). Thus, it is recommended to use the reference table of this test to identify the VO2max from the subjective perception by the ECP. In this way, ECP can be a valuable tool in the evaluation, exercise prescription and in epidemiological studies due to its easy and quick easy applicability in physically active adults


Subject(s)
Humans , Male , Female , Oxygen Consumption , Reference Values , Employee Performance Appraisal , Evaluation Studies as Topic , Exercise Test
12.
In. Soeiro, Alexandre de Matos; Leal, Tatiana de Carvalho Andreucci Torres; Accorsi, Tarso Augusto Duenhas; Gualandro, Danielle Menosi; Oliveira Junior, Múcio Tavares de; Caramelli, Bruno; Kalil Filho, Roberto. Manual da residência em cardiologia / Manual residence in cardiology. Santana de Parnaíba, Manole, 2 ed; 2022. p.966-973, ilus, tab.
Monography in Portuguese | LILACS | ID: biblio-1353818
13.
Motriz (Online) ; 28: e1022008921, 2022. tab, graf
Article in English | LILACS | ID: biblio-1351125

ABSTRACT

Abstract Aim: To contrast the acute effects of whole-body electromyostimulation (WB-EMS) with sham associated with dynamic exercises on cardiovascular, ventilatory, metabolic, and autonomic responses in men with obesity and controls. Methods: A randomized cross-over and double-blind trial with nine eutrophic (23.6 years; 23 ± 1.4 kg/m2) and ten men with obesity (26 ± 4 years; 38 ± 7 kg/m2), who were randomized to receive WB-EMS-Sham or Sham-WB-EMS with 30 min of rest between protocols. WB-EMS protocol (Miha Bodytec®) was applied at the motor level, frequency = 85 Hz, pulse duration = 350 μs, cycle on = 6′; cycle off = 4′. Sham group performed the same exercises with the electric current turned off. Throughout both protocols, subjects executed two dynamic exercises of 5 minutes each (step-up and step down associated with shoulder flexion, and lunge exercise associated with elbow flexion) in the same order. R-R intervals and breath-by-breath respiratory gases analysis were collected during the protocols. Heart rate variability (HRV) indexes were obtained using linear and nonlinear analysis. The level of statistical significance was set at p < 0.05. Results: Regarding both exercises, participants with obesity presented reduced oxygen uptake, higher ventilation, respiratory rate, blood pressure, and Borg scores (p < 0.05) when contrasted with controls, as expected. However, no significant differences were found for HRV indexes between groups (p > 0.05). In addition, WB-EMS did not increase oxygen uptake or altered autonomic modulation when contrasted with sham in both groups (p < 0.05). Conclusion: Obesity has a negative impact on symptoms and functional capacity. However, WB-EMS did not acutely enhance oxygen uptake or HRV during exercise in a population with obesity.


Subject(s)
Humans , Adult , Oxygen Consumption , Exercise , Functional Residual Capacity , Transcutaneous Electric Nerve Stimulation/methods , Heart Rate , Obesity/physiopathology , Double-Blind Method , Cross-Over Studies
14.
Chinese Journal of Cardiology ; (12): 471-479, 2022.
Article in Chinese | WPRIM | ID: wpr-935172

ABSTRACT

Objective: To investigate the postoperative cardiopulmonary fitness of children with congenital heart diseases (CHD). Methods: This is a retrospective study. A total of 136 children after cardiac correction undergoing cardiopulmonary exercise test (CPET) in Shanghai Children's Medical Center from March 1 to June 30, 2021 were selected. According to the surgical procedure, the children were divided into two groups: the biventricular correction group (BV group) (n=75) and single ventricular correction group (SV group) (n=61). The BV group was divided into two subgroups: simple congenital heart disease (S-CHD) group (n=35) and complex congenital heart disease (C-CHD) group (n=40). CPET parameters, including VO2 max, VO2/kg max, VO2/kg@AT, O2/HR max, HRR, PetCO2 max, CI, HRR at 1 min, VE/VCO2 slope, OUES/kg and EOV, were analyzed. CPET parameters of patients underwent different procedure were compared. In the subgroup analysis, CPET parameters of patients in S-CHD group and C-CHD group were compared. The parameters of the BV group were compared with the normal value. Linear correlation analysis was used to identify the correlation between the CPET parameters. Results: A total of 136 children with CHD after surgery were enrolled. The age was (9.4±3.1) (ranged 6.2-16.0) years, and there was 84 (61.8%) male. All the children completed CPET examination safely without experiencing serious circulation abnormalities. Compared with the SV group, the VO2/kg max ((32.6±6.9) ml·kg-1·min-1 vs. (23.5±5.9) ml·kg-1·min-1, P<0.001), O2/HR max ((7.24±2.93) ml/beat vs. (6.35±2.17)ml/beat, P=0.030), HRR at 1 min ((32.5±13.9) beat/min vs. (26.3±12.5) beat/min, P=0.036), OUES/kg (36.9±8.8 vs. 29.7±11.8, P=0.001) were significantly higher, VE/VCO2 slope (29.1±5.20 vs. 35.1±8.0, P<0.001) and incidence of EOV (32.0%(24/75) vs. 57.4%(31/61), P=0.027) were significantly lower in BV group. Compared with the simple CHD subgroup, VE/VCO2 slope and the incidence of EOV were higher, VO2/kg max, O2/HR max, HRR at 1 min and OUES/kg were lower in the complex CHD subgroup (all P<0.05). Cardiopulmonary function parameters of the BV group were lower than the normal value. Linear correlation analysis showed that VO2/kg@AT was strongly correlated with VO2/kg max (r=0.86, P<0.001), VO2/kg max was strongly correlated with OUES/kg (r=0.63, P<0.001), HRR was strongly correlated with CI (r=0.91, P<0.001), and VO2/kg max was strongly correlated with OUES/kg (r=0.63, P<0.001). VE/VCO2 slope was strongly correlated with PetCO2 max (r=1.00, P<0.001). Conclusions: The exercise cardiopulmonary function of children after single ventricular correction is weaker than that of biventricular correction, and the exercise tolerance of children after biventricular correction is lower than that of normal children. Among the children after biventricular correction, the exercise tolerance of children with complex CHD is lower than that of children with simple CHD. Postoperative CPET is of important realistic significance for CHD children.


Subject(s)
Adolescent , Child , Female , Humans , Male , China , Exercise Test/methods , Heart Defects, Congenital/surgery , Oxygen Consumption , Retrospective Studies
15.
Chinese Journal of Medical Instrumentation ; (6): 273-277, 2022.
Article in Chinese | WPRIM | ID: wpr-928903

ABSTRACT

A high-precision human metabolic measurement system is designed. The system uses STM32F103 as the main control chip to acquire oxygen, carbon dioxide and flow signals to calculate four quantitative indicators: oxygen consumption(VO2), carbon dioxide production(VCO2), respiratory entropy(RQ) and resting energy metabolism(REE), and finally uses an upper computer to display the calculation results.In this paper, the signal acquisition circuit design was carried out for the oxygen sensor, carbon dioxide sensor and flow sensor, and the validity of the device was verified with the American machine MGCDiagnositcs using Bland-Altman analysis method, and the results showed that the four parameters of VO2,VCO2, RQ and REE of both devices fell in the agreement interval of more than 95%. The device thus provides accurate metabolic measurements and offers an effective tool for the field of general health and clinical nutrition support in China.


Subject(s)
Humans , Calorimetry, Indirect , Carbon Dioxide/metabolism , Energy Metabolism , Oxygen , Oxygen Consumption
16.
Rev. cuba. invest. bioméd ; 40(4)dic. 2021. ilus, tab
Article in Spanish | LILACS, CUMED | ID: biblio-1408595

ABSTRACT

Introducción: Las investigaciones sobre el entrenamiento funcional de alta intensidad son escasas a pesar de su popularidad. Objetivo: Establecer la asociación del consumo máximo de oxígeno y el rendimiento del WOD Pukie (150 burpees por tiempo) en sujetos físicamente activos. Metodología: Se realizó un estudio descriptivo-correlacional con enfoque cuantitativo de diseño no experimental y con una muestra no probabilística conformada por 14 hombres y 6 mujeres, las evaluaciones fueron realizadas en 2 días con una diferencia de 48 horas en las cuales el primer día se evaluó el consumo máximo de oxígeno a través del test de Course-Navette y el segundo día se aplicó el WOD Pukie, el análisis estadístico se aplicó en el IBM SPSS V.22 (Demo) (95% de confianza y un p-valor de 0,05) en el cual se aplicó la prueba de normalidad de Shapiro-Wilk, el coeficiente correlacional de Pearson (p > 0,05) y Spearman (p 0,05). Conclusión: En conclusión, el consumo máximo de oxigeno no es un predictor significativo del rendimiento en el WOD Pukie en sujetos físicamente activos(AU)


Introduction: Few studies have been conducted about high intensity functional training, despite the popularity of this form of exercise. Objective: Establish the association between maximal oxygen consumption and Pukie WOD performance (150 burpees per time unit) in physically active subjects. Methods: A non-experimental correlational-descriptive quantitative study was conducted of a nonprobability sample of 14 men and 6 women. The evaluations were performed in two days, with a separation of 48 hours between them. Maximal oxygen consumption was measured on the first day using the Course-Navette test, and the Pukie WOD was applied on the second day. Statistical analysis was performed with the software IBM SPSS V.22 (Demo) (95% confidence and a p-value of 0.05), the Shapiro-Wilk normality test, Pearson's chi-squared test (p > 0.05) and Spearman's correlation coefficient (p 0.05). Conclusion: Maximal oxygen consumption is not a significant predictor of Pukie WOD performance in physically active subjects(AU)


Subject(s)
Humans , Male , Female , Oxygen , Oxygen Consumption , Exercise , Cardiorespiratory Fitness , Epidemiology, Descriptive , Athletic Performance
17.
Int. j. morphol ; 39(6): 1625-1634, dic. 2021. ilus, tab
Article in English | LILACS | ID: biblio-1385525

ABSTRACT

SUMMARY: Repeated sprint training in hypoxia (RSH) represents an innovative method in the process of development and improvement of physical performance among athletes. However, there is less scientific data on this topic. The purpose of this systematic review was to investigate the effect of RSH method on motor abilities and performance among athletes, obtain new information, and expand the already known conclusions. The data search was performed of 4 electronic databases for the years 2000-2021 May as follows: Google Scholar, PubMed, Web of Science, and ResearchGate. This search with English language restriction was made by using the following terms, individually/combination: "repeated sprint ability", "hypoxia", "effects", "physical performance", "VO2max" 844 studies were indentified, and 14 studies were selected (11 male studies, 1 female study, 2 both sexes). Results of this systematic review, a total sample size of 347 athletes (40 females and 307 males, aged 15.3 ± 0.5 - 35 ± 7 years), showed that RSH was an effective training method in improving all monitored variables (i.e. RSAmax, VO2max). However, it should be noted that major improvements were observed mainly in repeated sprint ability (RSA) tests, and less in aerobic tests (i.e. Wingate and Yo-Yo). In conclusion, based on current scientific studies, RSH is more effective method to improve the physical performance among athletes compared to repeated sprint training in normoxia (RSN). This study suggested that the RSH has a positive effect on the monitored variables in physical performance tests especially related to RSA.


RESUMEN: El entrenamiento de velocidad repetida en hipoxia (RSH) representa un método innovador en el proceso de desarrollo y mejora del rendimiento físico entre los deportistas. Sin embargo, existen pocos datos científicos sobre este tema. El propósito de esta revisión sistemática fue investigar el efecto del método RSH sobre las habilidades motoras y el rendimiento de los atletas, obtener nueva información y ampliar las conclusiones ya conocidas. La búsqueda de datos se realizó en 4 bases de datos electrónicas: Google Scholar, PubMed, Web of Science e Research Gate para los años 2000- a mayo de 2021. Esta búsqueda se realizó en artículos en idioma inglés mediante el uso de los siguientes términos, individualmente / combinación: "capacidad de sprint repetido", "hipoxia", "efectos", "rendimiento físico" y "VO2max" Se identificaron 844 estudios y se seleccionaron 14 de ellos (11 estudios realizados en hombres, un estudio realizado en mujeres y dos estudios realizados en am- bos sexos). Los resultados mostraron, un tamaño muestral total de 347 atletas (40 mujeres y 307 hombres, de 15,3 ± 0,5 - 35 ± 7 años). Se observó que la RSH fue un método de entrenamiento eficaz para mejorar todas las variables monitorizadas (es decir, RSAmax y VO2max). Sin embargo, se debe tener en consideración que se observaron mejoras importantes, principalmente, en las pruebas de capacidad de sprint repetido (RSA), y menos en las pruebas aeróbicas (es decir, Wingate y Yo-Yo). En conclusión, según los estudios científicos actuales, la RSH es un método más eficaz para mejorar el rendimiento físico entre los atletas en comparación con el entrenamiento de velocidad repetida en normoxia (RSN). Este estudio sugirió que la RSH tiene un efecto positivo sobre las variables monitoreadas en las pruebas de rendimiento físico especialmente relacionadas con RSA.


Subject(s)
Humans , Running/physiology , Exercise , Athletic Performance/physiology , Hypoxia , Oxygen Consumption/physiology
18.
Arq. bras. cardiol ; 116(5): 889-895, nov. 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1248906

ABSTRACT

Resumo Fundamento: O teste do degrau de seis minutos (TD6) é uma forma simples de avaliar a capacidade funcional, embora tenha sido pouco estudado em pacientes com doença arterial coronariana (DAC) ou insuficiência cardíaca (IC). Objetivo: Analisar a associação entre o TD6 e o consumo de oxigênio de pico (VO2pico) e desenvolver uma equação que estime o VO2pico com base no TD6, bem como determinar um ponto de corte para o TD6 que preveja um VO2pico ≥ 20 mL.kg-1.min-1 Métodos: Nos 171 pacientes submetidos ao TD6 e a um teste de exercício cardiopulmonar, análises da curva ROC, de regressão e de correlação foram usadas, e um p < 0,05 foi admitido como significativo. Resultados: A idade média foi 60±14 anos, e 74% eram do sexo masculino. A média da fração de ejeção ventricular esquerda foi 57±16%; 74% apresentavam DAC, e 28%, IC. A média do VO2pico foi 19±6 mL.kg-1.min-1, e o desempenho médio do TD6 foi 87±45 passos. A associação entre o TD6 e o VO2pico foi r 0,69 (p < 0,001). Os modelos VO2pico = 19,6 + (0,075 x TD6) - (0,10 x idade) para homens e VO2pico = 19,6 + (0,075 x TD6) - (0,10 x idade) - 2 para mulheres poderiam prever o VO2pico com base nos resultados do TD6 (R ajustado 0,72; R2 ajustado 0,53). O ponto de corte mais acurado para que o TD6 preveja um VO2pico ≥ 20 mL.kg-1.min-1 foi de > 105 passos [área sob a curva 0,85; intervalo de confiança de 95% 0,79 - 0,90; p < 0,001]. Conclusão: Uma equação que preveja o VO2pico com base nos resultados do TD6 foi derivada, e foi encontrada uma associação significativa entre o TD6 e o VO2pico. O ponto de corte do TD6, que prevê um VO2pico ≥ 20 mL.kg-1.min-1, foi > 105 passos. (Arq Bras Cardiol. 2021; 116(5):889-895)


Abstract Background: Six-minute step test (6MST) is a simple way to evaluate functional capacity, although it has not been well studied in patients with coronary artery disease (CAD) or heart failure (HF). Objective: Analyze the association between the 6MST and peak oxygen uptake (VO2peak) and develop an equation for estimating VO2peak based on the 6MST, as well as to determine a cutoff point for the 6MST that predicts a VO2peak ≥20 mL.Kg-1.min-1 Methods: In 171 patients who underwent the 6MST and a cardiopulmonary exercise test, correlation, regression, and ROC analysis were used and a p < 0.05 was admitted as significant. Results: mean age was 60±14 years and 74% were male. Mean left ventricle ejection fraction was 57±16%, 74% had CAD and 28% had HF. Mean VO2peak was 19±6 mL.Kg-1.min-1 and mean 6MST performance was 87±45 steps. Association between 6MST and VO2peak was r 0.69 (p <0.001). The model VO2peak =19.6 + (0.075 x 6MST) - (0.10 x age) for men and VO2peak =19.6 + (0.075 x 6MST) - (0.10 x age) - 2 for women could predict VO2peak based on 6MST results (adjusted R 0.72; adjusted R2 0.53). The most accurate cutoff point for 6MST to predict a VO2peak ≥20 mL.Kg-1.min-1 was >105 steps (AUC 0.85; 95% CI 0.79 -0.90; p <0.001). Conclusion: An equation for predicting VO2peak based on 6MST results was derived, and a significant association was found between 6MST and VO2peak. The cutoff point for 6MST, which predicts a VO2peak ≥20 mL.Kg-1.min-1, was >105 steps. (Arq Bras Cardiol. 2021; 116(5):889-895)


Subject(s)
Humans , Male , Female , Child, Preschool , Aged , Coronary Artery Disease , Heart Failure , Oxygen Consumption , Ventricular Function, Left , Exercise Test , Middle Aged
19.
Int. j. morphol ; 39(5): 1323-1330, oct. 2021. ilus, tab
Article in English | LILACS | ID: biblio-1385485

ABSTRACT

SUMMARY: High-intensity interval training (HIIT) is zed by achieving similar effects to conventional physical and physiological training in a shorter time, allowing its dissemination in the sports field. The present study was aimed to analyze the effects of a HIIT program on body composition and general and specific physical fitness in Chilean female field hockey players. Experimental, repeated measures, simple blind, parallel groups, and a quantitative approach were used. The participants were randomized, and distributed into a control group (CG; n= 10) that maintained regular field hockey training and an experimental group (EG; n= 10) that also received complementary training with HIIT. Body composition (muscle mass and adipose mass), general physical fitness (jump performance with countermovement jump [CMJ] and maximum oxygen consumption [VO2max] were evaluated with the test Course-Navette), and specific physical fitness (pushing speed, dribbling speed, and shooting accuracy) were assessed with established protocols. Pre- and post-intervention comparisons were made with Student's t and Wilcoxon tests, considering p<0.05. The main results indicate that the EG presented a significant increase in muscle mass (p = 0.024; d = 0.62), CMJ (p = 0.005; d = 1.10), VO2max (p = 0.001; d = 1.58) and a significant reduction in adipose mass (p = 0.023; d = 0.36) and time in pushing speed (p = 0.028; d = 0.79). The CG did not present significant changes in any of the variables analyzed, and no significant differences were reported between the groups. In conclusion, eight weeks of HIIT significantly increases muscle mass, jump performance, and VO2max and significantly reduces adipose mass and time in pushing speed in Chilean female field hockey players.


RESUMEN: El entrenamiento intervalado de alta intensidad (EIAI) se caracteriza por conseguir en un menor tiempo efec- tos similares al entrenamiento convencional a nivel físico y fisiológico, lo que ha permitido su difusión en el ámbito deportivo. El objetivo del presente estudio fue analizar los efectos de un programa de EIAI sobre la composición corporal, condición física general y específica en mujeres chilenas que practican hockey césped. Estudio experimental, de medidas repetidas, simple ciego, grupos paralelos y enfoque cuantitativo. Las participantes fueron aleatorizadas y distribuidas en grupo control (GC; n=10) que mantuvo los entrenamientos regulares de hockey césped y grupo experimental (GE; n=10) que además recibió de complemento EIAI. Se evaluó la composición corporal (masa muscular y masa adiposa), condición física general (capacidad de salto con el salto contra movimiento [CMJ] y consumo máximo de oxígeno [VO2máx] con la prueba Course de Navette) y condición física específica (velocidad de empuje, velocidad de dribling y precisión de tiro) con protocolos establecidos. Se realizaron comparaciones pre y post intervención con las pruebas t de Student y Wilcoxon, considerando un p<0,05. Los principales resultados indican que el GE presentó un aumento significativo de la masa muscular (p=0,024; d=0,62), CMJ (p=0,005; d=1,10), VO2máx (p=0,001; d=1,58) y, una reducción significativa, de la masa adiposa (p=0,023; d=0,36) y del tiempo en la velocidad de empuje (p=0,028; d=0,79). El GC no presentó cambios significativos en ninguna de las variables analizadas, mientras que no se reportaron diferencias significativas entre los grupos. En conclusión, ocho semanas de EIAI aumentan significativamente la masa muscular, capacidad de salto y VO2máx, además de reducir significativamente la masa adiposa y el tiempo en la velocidad de empuje en mujeres chilenas que practican hockey césped.


Subject(s)
Humans , Female , Body Composition , Athletic Performance , High-Intensity Interval Training , Hockey , Oxygen Consumption , Anthropometry , Physical Fitness
20.
Rev. chil. cardiol ; 40(2): 104-113, ago. 2021. tab, graf
Article in Spanish | LILACS | ID: biblio-1388085

ABSTRACT

RESUMEN: El Duke Activity Status Index (DASI) es un cuestionario inglés utilizado para la estimación de capacidad funcional, que se ha correlacionado con equivalentes metabólicos (METs) y con consumo de oxígeno (VO2max). No existe información de su aplicación en población chilena. El objetivo fue evaluar la utilidad de una versión de DASI traducida al español y adaptada a población local, para predecir capacidad funcional determinada en prueba de esfuerzo máxima. Método: Se tradujo al español el DASI junto con adaptación de preguntas para población local. El cuestionario fue auto administrado previo a la realización de una prueba de esfuerzo máximo, sólo detenida por síntomas y percepción de esfuerzo de ≥17 /20 en escala de Borg. Se correlacionó METs con VO2max logrados en esfuerzo versus los estimados por DASI. Resultados: Se incorporaron 480 sujetos (edad x:50.9 ±15.3 años). La mediana (IQ) de METS estimados por DASI fue 9,2 (8,2-9,8). El valor α de Cronbach y Formula 20 de Kuder Richardson fue 0,72. El cuestionario fue de rápida aplicación. Se observó correlación significativa entre METs (r: 0.44; p< 0.001) y VO2max (r: 0,37; p< 0.001) determinados por cuestionario DASI y prueba de esfuerzo máxima. Conclusión: El DASI traducido y adaptado a población chilena es un instrumento sencillo de completar, que se correlaciona positivamente con capacidad funcional de forma similar a lo descrito en otros países, entregando una herramienta útil para la evaluación y predicción de riesgo cardiovascular.


ABSTRACT: The Duke Activity Status Index (DASI) is an English questionnaire used to estimate functional capacity and physical fitness that correlates with peak oxygen uptake (VO2max) and metabolic equivalents (METs). There is no available information of its application in Chilean population. Aim: to assess the efficacy of a Spanish version of the DASI questionnaire in predicting functional capacity in a Chilean population. Methods: DASI was translated into a Spanish version and adapted to local population and culture. The questionnaire was self-administered prior to carrying out a treadmill exercise stress testing, stopped only by symptoms or a perception of stress ≥17 / 20 on the Borg scale. Internal consistency was estimated with two tests. A correlation was performed between the METs and VO2max achieved in treadmill stress testing versus those estimated by DASI. Results: 480 subjects were enrolled (age x: 50.9 ±15.3 years old). The median (IQ) DASI score was 9,2 (8,2-9,8). Both Cronbach´s α and Kuder Richardson Formula 20 were 0,72. DASI was easy and quick to apply. A significant correlation was observed between METS by DASI and those estimated by stress testing (r: 0.44: p<0.001); the same was true for the estimation of VO2max (r:0.37: p<0.001). Conclusion: The Spanish DASI translation adapted to Chilean population is an easy instrument to apply. Results are similar those obtained in other countries in the estimation of functional capacity.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Physical Fitness/physiology , Surveys and Questionnaires , Oxygen Consumption , Translations , Chile , Cross-Sectional Studies , Health Status Indicators , Electrocardiography , Energy Metabolism , Exercise Test , Self Report
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