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1.
Rev. bras. med. esporte ; 29: e2022_0156, 2023. tab, graf
Article in English | LILACS | ID: biblio-1394836

ABSTRACT

ABSTRACT Introduction: Due to academic pressure, many college students feel unmotivated to exercise, leading to serious obesity problems. One of the effective resources for weight loss is high-intensity interval training, but there is no extensive research on the effect on this specific group. Objective: To explore the impact of high-intensity interval training on body fat index (BFI) in college students, analyzing the scientific basis and safety of this exercise training through heart rate indicators. Methods: Two experimental groups, MICT (moderate-intensity continuous training) and HIIT (high-intensity interval training), were compared. The HIIT group used stationary bicycles, according to the high-intensity interval training method. MICT is a moderate-intensity continuous training method, so the load was half that of the HIIT group. Results: The IGC of women after training was 22.81±2.87, the IGC was significantly reduced, and there was a very significant difference; the IGC of men after training was 22.74±2.12, the IGC was significantly reduced, and they very significant difference. This shows that the exercises have a good effect on weight loss. Conclusion: HIIT training is more effective, both in time and strength of adherence. It has a good effect on improving cardiopulmonary function, and optimizing IGC are strongly impacted. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.


RESUMO Introdução: Devido à pressão acadêmica, muitos estudantes universitários sentem-se desmotivados para o exercício, acarretando a sérios problemas de obesidade. Um dos recursos eficazes para a perda de peso é o treinamento intervalado de alta intensidade, porém não há pesquisas amplas sobre o efeito nesse grupo específico. Objetivo: Explorar o impacto do treinamento intervalado de alta intensidade no índice de gordura corporal (IGC) dos estudantes universitários, analisando o embasamento científico e a segurança desse treinamento de exercício através dos indicadores de frequência cardíaca. Métodos: Dois grupos experimentais MICT (treinamento contínuo de intensidade moderada) e HIIT (treinamento intervalado de alta intensidade) foram comparados. O grupo HIIT utilizou bicicletas estacionárias, de acordo com o método de treinamento intervalado de alta intensidade. MICT é um método de treinamento contínuo de intensidade moderada, portanto a carga foi a metade do grupo HIIT. Resultados: O IGC das mulheres após o treinamento foi de 22,81±2,87, o IGC foi significativamente reduzido e houve uma diferença muito significativa, o IGC dos homens após o treinamento foi de 22,74±2,12, o IGC foi significativamente reduzido e houve uma diferença muito significativa. Isso mostra que os exercícios têm um bom efeito na perda de peso. Conclusão: O treinamento HIIT é mais eficaz, tanto em tempo quanto na resistência da adesão. Tem um bom efeito de melhora na função cardiopulmonar, sendo a otimização do IGC fortemente impactada. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.


RESUMEN Introducción: Debido a la presión académica, muchos estudiantes universitarios se sienten desmotivados para hacer ejercicio, lo que conduce a graves problemas de obesidad. Uno de los recursos efectivos para la pérdida de peso es el entrenamiento de intervalos de alta intensidad, sin embargo, no hay amplias investigaciones sobre el efecto en este grupo específico. Objetivo: Explorar el impacto del entrenamiento interválico de alta intensidad en el índice de grasa corporal (IGC) de estudiantes universitarios, analizando la base científica y la seguridad de este entrenamiento de ejercicio a través de indicadores de frecuencia cardíaca. Métodos: Se compararon dos grupos experimentales MICT (entrenamiento continuo de intensidad moderada) y HIIT (entrenamiento por intervalos de alta intensidad). El grupo HIIT utilizó bicicletas fijas, según el método de entrenamiento por intervalos de alta intensidad. El MICT es un método de entrenamiento continuo de intensidad moderada, por lo que la carga era la mitad que la del grupo HIIT. Resultados: El IGC de las mujeres después del entrenamiento fue de 22,81±2,87, el IGC se redujo significativamente y hubo una diferencia muy significativa, el IGC de los hombres después del entrenamiento fue de 22,74±2,12, el IGC se redujo significativamente y hubo una diferencia muy significativa. Esto demuestra que los ejercicios tienen un buen efecto en la pérdida de peso. Conclusión: El entrenamiento HIIT es más efectivo, tanto en tiempo como en resistencia a la adherencia. Tiene un buen efecto de mejora de la función cardiopulmonar, con un fuerte impacto en la optimización del IGC. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.


Subject(s)
Humans , Male , Female , Students , Body Mass Index , High-Intensity Interval Training , Heart Rate/physiology , Universities
2.
Rev. bras. med. esporte ; 29: e2022_0168, 2023. tab, graf
Article in English | LILACS | ID: biblio-1394832

ABSTRACT

ABSTRACT Introduction: Several programs to encourage physical activity has been encouraged to reduce the sedentary lifestyle in China. Running is among them because it has potentially positive effects on cardiovascular diseases, hypertension, diabetes mellitus, and hypercholesterolemia, in addition to the intrinsic psychological and social benefits of outdoor sports. Objective: Explore the protective effect of running on the cardiac system by analyzing strategies for cultivating exercise health awareness. Methods: A group of ten healthy volunteers, five women aged 25-35 years, underwent a 45-minute running program, performed four times a week for three weeks. Data collected by spirometry and cardiac monitoring were collected, treated, compared, and discussed. This paper introduced the concept of subjective exercise intensity to find the best analysis and judgment of Cardiac Function. Finally, a quantitative investigation involving the analysis of 315 questionnaires explored the current status of sports health awareness in running fans. Results: Heart rate amplitude during running remained in the range of 120-160, belonging to the normal heart rate range for the surveyed audience. In most cases, women's heart rate was higher than men's (P<0.05). The exercise intensity was fixed at a frequency below the value of 16, which is a slightly strenuous stage, and the relative exercise intensity was controlled between 50% and 71.5%. Conclusion: Running has a good cardiac protective effect, and its followers are highly aware of sports health. Due to the beneficial effect of sports practice, its dissemination is recommended as a form of physical and social therapeutic activity. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.


RESUMO Introdução: Com o intuito de reduzir o índice de sedentarismo na China, diversos programas de incentivo à atividade física foram estimulados. A corrida está dentre eles pois tem potenciais efeitos positivos nas doenças cardiovasculares, hipertensão arterial, diabetes mellitus e hipercolesterolemia, além dos benefícios psicológicos e sociais intrínsecos na prática esportiva ao ar livre. Objetivo: Explorar o efeito protetor da corrida no sistema cardíaco analisando as estratégias para a cultura da consciência sanitária do exercício. Métodos: Um grupo de dez voluntários saudáveis, com cinco mulheres e idade entre 25 a 35 anos foram submetidos a um programa de corrida por 45 minutos, realizado quatro vezes por semana, durante três semanas. Dados coletados por espirometria e monitoramento cardíaco foram coletados, tratados, comparados e discutidos. Este artigo introduziu o conceito de intensidade de exercício subjetivo para encontrar a melhor análise e julgamento da Função Cardíaca. Por fim, uma investigação quantitativa envolvendo a análise de 315 questionários explorou a situação atual da conscientização em saúde esportiva em adeptos da corrida. Resultados: A amplitude de frequência cardíaca durante a corrida manteve-se na faixa de 120-160, pertencente à faixa normal de frequência cardíaca ao público pesquisado. A frequência cardíaca das mulheres foi maior do que a dos homens na maioria dos casos (P<0,05). A intensidade do exercício fixou-se numa frequência inferior ao valor de 16, que é um estágio ligeiramente extenuante, e a intensidade relativa do exercício ficou controlada entre 50% e 71,5%. Conclusão: A corrida apresenta um bom efeito protetor cardíaco, seus adeptos possuem elevada conscientização da saúde esportiva. Devido ao efeito salutar da prática esportiva, recomenda-se a sua divulgação como forma de atividade terapêutica física e social. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.


RESUMEN Introducción: Con el fin de reducir el estilo de vida sedentario en China, se han estimulado varios programas para fomentar la actividad física. La carrera se encuentra entre ellos porque tiene potenciales efectos positivos sobre las enfermedades cardiovasculares, la hipertensión, la diabetes mellitus y la hipercolesterolemia, además de los beneficios psicológicos y sociales intrínsecos del deporte al aire libre. Objetivo: Explorar el efecto protector de correr sobre el sistema cardíaco analizando las estrategias para cultivar la conciencia de la salud del ejercicio. Métodos: Un grupo de diez voluntarios sanos, cinco mujeres, con edades comprendidas entre los 25 y los 35 años, fueron sometidos a un programa de carrera durante 45 minutos, realizado cuatro veces por semana durante tres semanas. Los datos recogidos por la espirometría y la monitorización cardíaca fueron recogidos, tratados, comparados y discutidos. Este trabajo introdujo el concepto de intensidad subjetiva del ejercicio para encontrar el mejor análisis y juicio de la Función Cardíaca. Por último, una investigación cuantitativa que incluyó el análisis de 315 cuestionarios exploró el estado actual de la conciencia de la salud deportiva en los aficionados a las carreras. Resultados: La amplitud de la frecuencia cardíaca durante la carrera se mantuvo en el rango de 120-160, perteneciendo al rango de frecuencia cardíaca normal para el público encuestado. La frecuencia cardíaca de las mujeres fue mayor que la de los hombres en la mayoría de los casos (P<0,05). La intensidad del ejercicio se fijó en una frecuencia inferior al valor de 16, que es una etapa ligeramente agotadora, y la intensidad relativa del ejercicio se controló entre el 50% y el 71,5%. Conclusión: La acción de correr presenta un buen efecto cardioprotector, sus adeptos poseen alta conciencia de la salud deportiva. Debido al efecto saludable de la práctica deportiva, se recomienda su difusión como forma de actividad terapéutica física y social. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Young Adult , Cardiovascular Diseases/prevention & control , Exercise/physiology , Diabetes Mellitus/prevention & control , Heart Rate/physiology , Hypercholesterolemia/prevention & control
3.
Rev. bras. med. esporte ; 29: e2022_0172, 2023. tab, graf
Article in English | LILACS | ID: biblio-1394831

ABSTRACT

ABSTRACT Introduction: The unregulated development in the current life pattern has strengthened obesity among adolescents, and this problem is becoming more serious. Objective: Compare the impact of two exercise methods on the physical health of obese adolescents. Methods: 24 obese adolescents (12 females; BMI>30% ± 3%; age concentrated between 10 and 16 years) were selected and divided into group I and group II for a 4-week experimental study, and changes in physical fitness and function were recorded. Results: After four weeks of aerobic exercise control (group I), waist circumference, hip circumference, skinfold thickness, and abdominal fold thickness were significantly reduced in boys (p<0.05), and girls' body shape indicators were significantly altered (p<0.05). After four weeks of aerobic exercise combined with resistance training (group II), the effects of weight, BMI, and body size were significant in boys and girls. Conclusion: Aerobic exercise can effectively improve the physical problems of obese adolescents. Under the same external conditions, the effect of aerobic exercise was shown to be more effective when combined with resistance training in the physical improvement of the analyzed group. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.


RESUMO Introdução: O desenvolvimento desregrado no padrão de vida atual fortaleceu a obesidade entre os adolescentes e esse problema está se tornando cada vez mais grave. Objetivo: Comparar o impacto entre dois métodos de exercício na saúde física de adolescentes obesos. Métodos: Foram selecionados 24 adolescentes obesos (12 mulheres; IMC>30% ± 3%; idade concentrada entre 10 e 16 anos) e divididos no grupo I e no grupo II para um estudo experimental de 4 semanas, sendo registradas as alterações no condicionamento e função física. Resultados: Após 4 semanas de controle de exercício aeróbico (grupo I), a circunferência da cintura, circunferência do quadril, espessura da dobra cutânea e espessura da dobra abdominal foram significativamente reduzidas em meninos (p<0,05), e os indicadores de forma corporal das meninas foram significativamente alterados (p<0,05). Após 4 semanas de exercício aeróbico combinado com treinamento de resistência (grupo II), os efeitos do peso, IMC e tamanho do corpo foram significativos em meninos e meninas. Conclusão: O exercício aeróbico pode melhorar efetivamente os problemas físicos dos adolescentes obesos. Sob as mesmas condições externas, o efeito do exercício aeróbico demonstrou-se mais eficaz quando aliado ao treinamento de resistência na melhoria física do grupo analisado. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.


RESUMEN Introducción: El desarrollo desordenado en el patrón de vida actual ha potenciado la obesidad entre los adolescentes y este problema es cada vez más grave. Objetivo: Comparar el impacto de dos métodos de ejercicio en la salud física de adolescentes obesos. Métodos: Se seleccionaron 24 adolescentes obesos (12 mujeres; IMC>30% ± 3%; edad concentrada entre 10 y 16 años) y se dividieron en el grupo I y el grupo II para un estudio experimental de 4 semanas, y se registraron los cambios en la aptitud física y la función. Resultados: Después de 4 semanas de control de ejercicio aeróbico (grupo I), la circunferencia de la cintura, la circunferencia de la cadera, el grosor de los pliegues cutáneos y el grosor de los pliegues abdominales se redujeron significativamente en los niños (p<0,05), y los indicadores de la forma corporal de las niñas se alteraron significativamente (p<0,05). Tras 4 semanas de ejercicio aeróbico combinado con entrenamiento de resistencia (grupo II), los efectos del peso, el IMC y el tamaño corporal fueron significativos en chicos y chicas. Conclusión: El ejercicio aeróbico puede mejorar eficazmente los problemas físicos de los adolescentes obesos. En las mismas condiciones externas, el efecto del ejercicio aeróbico se mostró más eficaz cuando se combinó con el entrenamiento de resistencia en la mejora física del grupo analizado. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.


Subject(s)
Humans , Male , Female , Adolescent , Exercise Therapy/methods , Obesity/therapy , Weight Loss , Body Mass Index , Inspiratory Capacity , Arterial Pressure/physiology , Heart Rate/physiology
4.
Rev. bras. med. esporte ; 28(6): 639-642, Nov.-Dec. 2022. tab
Article in English | LILACS | ID: biblio-1376770

ABSTRACT

ABSTRACT Introduction Research on scientific fitness exercises for the elderly has an important practical significance and can improve the physical fitness and health of the elderly. Chinese research on scientific conditioning exercises for the elderly is still lacking, especially when comparing results between different sports approaches in the elderly. Objective To study the effects of different types of exercise on the physical performance and health of the elderly. Methods 329 healthy elderly volunteers (161 men) with a mean age of 64.5 years from 6 different sports activities were selected. The following indicators of body shape and physical function were evaluated before and after training: height, weight, waist circumference, hip circumference, vital capacity, heart rate, systolic blood pressure, and diastolic blood pressure. All indicators were collected following the standardized methods of China's national fitness monitoring system. Exercise intensity was monitored with the subject's target heart rate. Physical exercises were performed for 30 to 40 minutes, 3 to 4 times a week. Results The type of physical exercise has a significant association with human performance and health. Conclusion Exercise and fitness programs positively correlate with human performance and health. Evidence level II; Therapeutic Studies - Investigating the results.


RESUMO Introdução A pesquisa sobre exercícios de aptidão científica para idosos tem um importante significado prático, podendo melhorar a aptidão física e a saúde dos idosos. Atualmente, a pesquisa chinesa sobre exercícios de condicionamento científico para idosos ainda é deficiente, principalmente ao comparar resultados entre diferentes abordagens esportivas nos idosos. Objetivo Estudar os efeitos de diferentes tipos de exercícios no desempenho físico e na saúde dos idosos. Métodos 329 idosos voluntários saudáveis (161 homens) com idade média de 64,5 anos, de 6 diferentes atividades esportivas foram selecionados. Os seguintes indicadores de forma corporal e função física foram avaliados antes e após os treinos: altura, peso, circunferência da cintura, circunferência do quadril, capacidade vital, frequência cardíaca, pressão arterial sistólica e pressão arterial diastólica. Todos os indicadores foram coletados seguindo os métodos padronizados do sistema nacional de monitoramento de condicionamento físico da China. A intensidade do exercício foi monitorada com a frequência cardíaca alvo do indivíduo. Os exercícios físicos foram executados entre 30 a 40 minutos, 3 a 4 vezes por semana. Resultados O tipo de exercício físico tem uma associação significativa com o desempenho humano e a saúde. Conclusão Os programas de exercícios e condicionamento físico têm uma correlação positiva com o desempenho humano e a saúde. Nível de evidência II; Estudos terapêuticos - Investigação de resultados.


RESUMEN Introducción La investigación sobre ejercicios científicos de acondicionamiento físico para ancianos tiene un significado práctico importante y puede mejorar la condición física y la salud de las personas mayores. Actualmente, aún falta investigación china sobre ejercicios de acondicionamiento científico para personas mayores, especialmente cuando se comparan los resultados entre diferentes enfoques deportivos en ancianos. Objetivo Estudiar los efectos de diferentes tipos de ejercicio sobre el rendimiento físico y la salud de los adultos mayores. Métodos Se seleccionaron 329 voluntarios adultos mayores sanos (161 hombres) con una edad media de 64,5 años, de 6 actividades deportivas diferentes. Se evaluaron los siguientes indicadores de forma corporal y función física antes y después del entrenamiento: altura, peso, circunferencia de la cintura, circunferencia de la cadera, capacidad vital, frecuencia cardíaca, presión arterial sistólica y presión arterial diastólica. Todos los indicadores se recopilaron siguiendo los métodos estandarizados del sistema nacional de seguimiento del estado físico de China. La intensidad del ejercicio se controló con la frecuencia cardíaca objetivo del sujeto. Los ejercicios físicos se realizaron durante 30 a 40 minutos, 3 a 4 veces por semana. Resultados El tipo de ejercicio físico tiene una asociación significativa con el rendimiento humano y la salud. Conclusión Los programas de ejercicio y acondicionamiento físico tienen una correlación positiva con el rendimiento y la salud humana. Nivel de evidencia II; Estudios terapéuticos - Investigación de resultados.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Exercise , Physical Fitness/physiology , Health of the Elderly , Blood Pressure/physiology , Vital Capacity/physiology , Heart Rate/physiology
5.
Arq. ciências saúde UNIPAR ; 26(3): 1343-1359, set-dez. 2022.
Article in English | LILACS | ID: biblio-1402284

ABSTRACT

The clinical consequences of chronic obstructive pulmonary disease (COPD) include fatigue, dyspnea and progressive impairment of exercise capacity. It also produces significant systemic consequences such as nutritional depletion, physical deconditioning, systemic inflammation, and structural and functional changes in the respiratory and locomotor muscles. Regular exercise provides improvements in the health of patients with stable COPD and can relieve the symptoms, increasing the exercise capacity and improving the quality of life, while also reducing hospitalization and, to some extent, the risk of morbidity and mortality. Training with progressive exercises is associated with metabolic and neurohumoral adaptations, heart rate variability, with adaptations in the pulmonary and skeletal muscles, as well as the inflammatory, cardiovascular and respiratory systems. This review will focus on current knowledge of the mechanisms by which physical training can provide beneficial effects in COPD patients. Results: After analyzing the titles, abstracts and content, out of 500 articles found, 489 were excluded, leaving 11 articles. Studies have shown the beneficial effect of aerobic training on COPD. Conclusion: Physical training should be considered a therapeutic option in patients with COPD, regardless of being terrestrial or aquatic, as it can have beneficial effects on the systems.


As consequências clínicas da doença pulmonar obstrutiva crônica (DPOC) são: fadiga, dispnéia e comprometimento progressivo da capacidade do exercício, além disso, também produz consequências sistêmicas significativas como depleção nutricional, descondicionamento físico, inflamação sistêmica, mudanças estruturais e funcionais de músculos respiratórios e locomotores. O treinamento físico regular traz como beneficíos efeitos da melhoria da saúde em pacientes com DPOC estável e pode aliviar os sintomas, melhorar a capacidade de exercício e a qualidade de vida, reduzir a hospitalização e, em certa medida, o risco de morbi-mortalidade. Já o treinamento com exercícios progressivos está associado a adaptações metabólicas, neurohumorais, variabilidade da frequência cardíaca, inflamatórias, dos músculos pulmonares e esqueléticos, cardiovasculares e respiratórias. Esta revisão enfocará o conhecimento atual dos mecanismos pelos quais o treinamento físico pode ter efeitos benéficos em pacientes com DPOC. Resultados: Após análise dos títulos, resumos e conteúdo, dos 500 artigos encontrados, 489 foram excluídos, restando 11 artigos. Estudos têm demonstrado o efeito benéfico do treinamento aeróbico na DPOC. Conclusão: O treinamento físico deve ser considerado uma opção terapêutica em pacientes com DPOC, independente de ser terrestre ou aquático, pois pode ter efeitos benéficos nos sistemas.


Las consecuencias clínicas de la enfermedad pulmonar obstructiva crónica (EPOC) incluyen fatiga, disnea y deterioro progresivo de la capacidad de ejercicio. También produce importantes consecuencias sistémicas como el agotamiento nutricional, el desacondicionamiento físico, la inflamación sistémica y los cambios estructurales y funcionales en los músculos respiratorios y locomotores. El ejercicio regular proporciona mejoras en la salud de los pacientes con EPOC estable y puede aliviar los síntomas, aumentando la capacidad de ejercicio y mejorando la calidad de vida, al tiempo que reduce la hospitalización y, en cierta medida, el riesgo de morbilidad y mortalidad. El entrenamiento con ejercicios progresivos se asocia a adaptaciones metabólicas y neurohumorales, a la variabilidad de la frecuencia cardíaca, con adaptaciones en los músculos pulmonares y esqueléticos, así como en los sistemas inflamatorio, cardiovascular y respiratorio. Esta revisión se centrará en el conocimiento actual de los mecanismos por los que el entrenamiento físico puede proporcionar efectos beneficiosos en los pacientes con EPOC. Resultados: Tras analizar los títulos, resúmenes y contenido, de los 500 artículos encontrados se excluyeron 489, quedando 11 artículos. Los estudios han demostrado el efecto beneficioso del entrenamiento aeróbico en la EPOC. Conclusiones: El entrenamiento físico debe considerarse una opción terapéutica en pacientes con EPOC, independientemente de que sea terrestre o acuático, ya que puede tener efectos beneficiosos sobre los sistemas.


Subject(s)
Patients/statistics & numerical data , Exercise/physiology , Pulmonary Disease, Chronic Obstructive , Quality of Life/psychology , Muscle Development/physiology , Dyspnea/rehabilitation , Fatigue/prevention & control , Endurance Training , Heart Rate/physiology
6.
Int. j. cardiovasc. sci. (Impr.) ; 35(4): 523-529, July-Aug. 2022. tab
Article in English | LILACS | ID: biblio-1385264

ABSTRACT

Abstract Background: Air pollution and sex independently affect cardiac autonomic control, which can be assessed by heart rate variability (HRV). The research hypothesis is that individuals exposed to low concentrations of pollution have higher cardiac autonomic modulation compared to those exposed to high concentrations and that women have better cardiac autonomic control than men. Objective: To analyze the impact of exposure to air pollutants, specifically smoke, and sex on HRV in healthy young people exposed to different concentrations of pollution over an average period of 22 years. Methods: From April to September 2011, 36 participants of both sexes (20-30 years old) were selected, grouped by levels of air pollution exposure according to indices provided by the Environmental Company of São Paulo State. The R-R intervals (R-Ri) of the electrocardiogram were captured using a heart rate monitor during supine rest. HRV was analyzed by spectral analysis and conditional entropy. The Queen's College step test was used to characterize functional capacity. A between-group comparison was performed using the two-way ANOVA statistical test (post hoc Tukey) and p<0.05. Results: Significant differences were found in mean R-Ri (p<0.01) and cardiac parasympathetic modulation between sexes in the same city (p=0.02) and between groups exposed to different air pollution concentrations (p<0.01). Conclusion: Our results suggest that long-term exposure to air pollutants, specifically smoke, has an unfavorable impact on HRV, with reduced cardiac vagal autonomic modulation in healthy young adults, especially females.


Subject(s)
Humans , Male , Female , Adult , Young Adult , Air Pollution/adverse effects , Heart Rate , Autonomic Nervous System/pathology , Cross-Sectional Studies , Prospective Studies , Air Pollutants
7.
Rev. med. vet. zoot ; 69(1): 33-39, ene.-abr. 2022. tab
Article in Spanish | LILACS, COLNAL | ID: biblio-1389165

ABSTRACT

RESUMEN Se analizaron los niveles de lactato sérico y de frecuencia cardiaca (FC) en 15 perros clinicamente sanos que fueron sometidos a pruebas de esfuerzo en trotadora motorizada, buscando verificar un grado de fatiga muscular frente a una prueba de esfuerzo intenso. Se consideraron pacientes con morfologia craneana de tipo braquicefálico, mesocefálico y dolicocefálico. Las mediciones séricas de lactato fueron conseguidas por medio de un medidor portátil, mientras que las frecuencias cardiacas se obtuvieron a través de un oximetro portátil a los tiempos 0, 10, 20 y 30 minutos, en los diferentes momentos de esfuerzo fisico en la trotadora motorizada, la cual fue adaptada en su inclinación en 15% y a un máximo de velocidad de 10 km/h. Las medias de los niveles séricos entre perros mesocefálicos y dolicocefálicos fueron significativas, a diferencia de los perros braquicefálicos los cuales resultaron no significativos. Las medias de las frecuencias cardiacas no tuvieron diferencia significativa bajo un 95% de confianza.


ABSTRACT Serum lactate and heart rate (HR) levels were analyzed in 15 clinically healthy dogs that were subjected to stress tests on a motorized treadmill, seeking to verify a degree of muscle fatigue compared to an intense exercise test. Patients with brachycephalic, mesocephalic and dolichocephalic type cranial morphology were considered. Serum lactate measurements were procured by means of a portable meter, while heart rates were obtained through a portable oximeter at the times 0, 10, 20, and 30 minutes at different moments of physical effort on the motorized treadmill, which was adapted in its inclination by 15% and at a maximum speed of 10 km/h. Mean serum levels between mesocephalic and dolichocephalic dogs were significant, unlike brachycephalic dogs, which were not significant. The mean heart rates did not have a significant difference under 95% confidence.


Subject(s)
Biomarkers , Dogs , Exercise Test , Lactic Acid , Serum , Fatigue , Heart Rate
8.
Rev. bras. ciênc. mov ; 29(2): [1-10], mar. 2022. Ilus, Tab
Article in Portuguese | LILACS | ID: biblio-1363781

ABSTRACT

O objetivo do presente estudo foi avaliar os efeitos do exercício prévio específico sobre o desempenho em teste intermitente de alta intensidade em jogadoras de futsal e variáveis associadas. Para isso 13 jogadoras amadoras de futsal (24,1 anos; 63,6 kg; 1,61 m; IMC = 24,3 kg/m2 ; % de gordura = 27,9), de maneira cruzada, passaram por duas sessões experimentais separadas por sete dias. Em uma das sessões era realizado um exercício prévio (EP): três primeiros níveis do Yo Yo intermittent recovery test level 1 (YYIR1) repetidos por três vezes. Na sessão controle (CON), as jogadoras permaneciam em repouso (5 min) e após, em ambas as sessões, era realizado o YYIR1 até a exaustão. Antes do início da sessão eram reportadas escalas de recuperação e dor muscular de início tardio, a frequência cardíaca (FC) foi monitorada por toda sessão e, ao término, a percepção de esforço (PSE) era registrada. As percepções de recuperação (p = 0,23) e de dor (p = 0,36) não diferiram entre as sessões EP vs. CON. A FC média durante o exercício prévio foi de 111,3 ± 7,7 bpm. A distância percorrida no YYIR1 não diferiu (p = 0,25) também entre EP (372,3 ± 103,8 m) vs. CON (341,5 ± 84,2 m), bem como a monitoração da FC (mínima, média e máxima). Entretanto, a PSE foi menor (p = 0,0008) na sessão EP (8,5 ± 0,7 UA) do que em CON (9,3 ± 0,6 UA). Assim, concluímos que o exercício prévio não influencia o desempenho intermitente de alta intensidade (YYIR1), nem as variáveis de FC. Porém, o exercício prévio gera menores níveis de percepção de esforço (intensidade interna) em comparação ao repouso antes do YYIR1. (AU)


The aim of the present study was to evaluate the effects of specific prior exercise on performance in intermittent high intensity testing in futsal players and associated variables. For this, 13 amateur futsal players (24.1 years old; 63.6 kg; 1.61 m; BMI = 24.3 kg / m2; fat% = 27.9), in a crossed way, went through two experimental sessions separated by seven days. In one of the sessions, a previous exercise (PE) was performed: the first three levels of the Yo Yo intermittent recovery test level 1 (YYIR1) repeated three times. In the control session (CON), the players remained at rest (5 min) and afterwards, in both sessions, YYIR1 was performed until exhaustion. Before the start of the session, recovery scales and late-onset muscle pain were reported, the heart rate (HR) was monitored throughout the session and, at the end, the perceived exertion (RPE) was recorded. The perceptions of recovery (p = 0.23) and pain (p = 0.36) did not differ between the PE vs CON. The average HR during the previous exercise was 111.3 ± 7.7 bpm. The distance covered in YYIR1 did not differ (p = 0.25) also between PE (372.3 ± 103.8 m) vs. CON (341.5 ± 84.2 m), as well as HR monitoring (minimum, average and maximum). However, the RPE was lower (p = 0.0008) in the PE session (8.5 ± 0.7 AU) than in CON (9.3 ± 0.6 AU). Thus, we conclude that the previous exercise does not influence the intermittent high intensity performance (YYIR1), nor the HR variables. However, previous exercise generates lower levels of perceived exertion (internal intensity) compared to resting before YYIR1. (AU)


Subject(s)
Humans , Female , Adolescent , Adult , Physical Endurance , Soccer , Women , Exercise , Athletic Performance , Rest , Body Temperature , Women's Health , Athletes , Physical Conditioning, Human , Heart Rate
9.
Fisioter. Bras ; 22(6): 871-880, Fevereiro 7, 2022.
Article in English | LILACS | ID: biblio-1358293

ABSTRACT

)Introdução: A pressão positiva expiratória nas vias aéreas (EPAP) é a aplicação de uma resistência expiratória para manter a pressão positiva nas vias aéreas e também tem sido amplamente utilizada para prevenir possíveis complicações no pós-operatório de cirurgia cardíaca. Objetivo: Descrever o comportamento da oxigenação e hemodinâmica durante o uso de EPAP em pacientes submetidos à cirurgia de revascularização do miocárdio (RM). Métodos: Estudo transversal que avaliou saturação periférica de oxigênio (SpO2), frequência cardíaca (FC), frequência respiratória (FR), pressão arterial sistólica (PAS), diastólica (PAD) e média (PAM), pressão arterial de oxigênio (PaO2), pressão arterial de dióxido de carbono (PaCO2) e índice de oxigenação calculado dividindo a PaO2 pela fração inspirada de oxigênio (FiO2), os pacientes foram avaliados em repouso, no primeiro dia de pós-operatório. A EPAP foi realizada com o paciente em sedestação na poltrona e uma gasometria arterial foi coletada e analisada para verificar os valores de PaO2, PaCO2, SaO2 e PaO2/FiO2. Foi aplicada uma resistência expiratória de 12 cmH2O por dez minutos. Imediatamente após a aplicação do EPAP, os pacientes tiveram nova análise gasométrica e a hemodinâmica analisada. Resultados: 58 pacientes, 41 (71%) do sexo masculino e com idade média de 54 ± 8 anos foram avaliados. O uso de EPAP no pós-operatório levou à melhora de todas as variáveis gasométricas, exceto PaCO2. Houve uma melhora na SaO2 (%) pré-EPAP 94 ± 3 e pós-EPAP 98 ± 2, PaO2/FiO2 pré-EPAP 279 ± 10 e pós-EPAP 346 ± 8, PaO2 (mmHg) pré-EPAP 78 ± 8 e pós-EPAP 97 ± 7. Conclusão: Concluiu-se que a aplicação do EPAP teve um impacto positivo na oxigenação em pacientes submetidos à RM sem gerar efeitos adversos na hemodinâmica. (AU)


Subject(s)
Thoracic Surgery , Oxygenation , Respiratory Rate , Arterial Pressure , Heart Rate , Hemodynamics
10.
Braz. J. Vet. Res. Anim. Sci. (Online) ; 59: e181942, fev. 2022. tab, graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1363107

ABSTRACT

The project is based on a test of a thoracic vibration vest prototype, adapted to equines by the Expector® vest's company, on healthy animals. Ten (10) equines were used in the project, male or female, adults, healthy, belonging to FMVZ-USP or private owners. Each animal went through two phases: A and B. Phase A consisted of the placement of the vest without turning on the vibrators, evaluating the animal's acceptability, facility, adaptation to the animal's body, and discomfort due to the vest's use. Phase B included the placement of the vest and turning on the vibrators, evaluating the animal's acceptability, reaction to the vibrators, and, if present, to which velocity/type of vibration, and the presence of adverse effects. Both phases were done three times on separate days. The behavioral parameters: "placement facility" and "adaptation to the animal's body" were observed. In phase B, the response to the vibration was classified from 0 to 5. The answer was evaluated on low and high intensities for the four vibration types. The heart rate (HR) and respiratory rate (RR) were also evaluated at the beginning and end of each repetition. The animals' HR was kept on normal, except for one animal on one day of the test. Concerning the RR, most animals presented moments of tachypnea. On the experiment's first day, 100% of grade Great to "facility of placement" and "adaptation to the animal's body" was obtained, but on days 2 and 3 this value dropped to 90% due to alterations in one animal's responses. Regarding vibration's responses, 77.3% were evaluated as no discomfort (grade 0), 17.1% little discomfort (grade 1), 3.3% medium discomfort (grade 2), 0.4% great discomfort (grade 3), 0.21% extreme discomfort (grade 4), and 1.6% non-acceptance of the vest (grade 5). Some possible changes on the prototype were also verified to be suggested to the manufacturer, such as the change of the buckle and the use of wireless control. Vest use appears promising for equine respiratory physiotherapy, considering the acceptability was good, and its efficiency on the expectoration of diseased animals must be tested.


O projeto consistiu no teste de um protótipo de colete de vibração torácica, adaptado aos equinos pela empresa do colete Expector®, em animais saudáveis. Foram utilizados 10 equinos, machos ou fêmeas, adultos, saudáveis, pertencentes à FMVZ-USP e a proprietários particulares. Cada animal passou por duas fases: A e B. A Fase A consistiu na colocação do colete sem ligar os vibradores, avaliando-se a aceitabilidade do animal; facilidade; adaptação ao corpo do animal e incômodo do mesmo à sua presença. Já a Fase B contava com a colocação do colete e funcionamento dos vibradores, avaliando-se a aceitabilidade do animal; reação aos vibradores e, se presente, a qual velocidade/tipo de vibração; presença de reações ou efeitos adversos. As duas fases foram realizadas em triplicata em dias separados. Foram observados os parâmetros comportamentais "facilidade de colocação" e "adaptação ao corpo do animal". Na fase B, a resposta à vibração foi classificada de 0 a 5. A resposta foi avaliada nas intensidades baixa e alta para os quatro diferentes tipos de vibração. Foram avaliadas também as frequências cardíaca (FC) e respiratória (FR) no início e final de cada repetição. A FC dos animais se manteve dentro do intervalo de normalidade, com exceção de um animal em um dia de avaliação. Em relação à FR, a maioria apresentou momentos de taquipneia. No primeiro dia de experimento obteve-se 100% de avaliação Ótima para "facilidade de colocação" e "adaptação ao corpo do animal", mas nos dias 2 e 3 esse valor caiu para 90% devido à alteração na resposta de um animal. Em relação à resposta à vibração, 77,3% das respostas foram avaliadas como nenhum incômodo (nota 0), 17,1% pouco incômodo (nota 1), 3,3% médio incômodo (nota 2), 0,4% muito incômodo (nota 3), 0,21% incômodo extremo (nota 4) e 1,6% não aceitação do colete (nota 5). Foram também verificadas algumas possíveis mudanças no protótipo a serem sugeridas ao fabricante, como mudança do tipo de fivela e uso de controle sem fio. A utilização do colete parece ser muito promissora para a fisioterapia respiratória em equinos, visto que a aceitabilidade foi muito boa, devendo-se agora realizar a avaliação de sua eficácia na expectoração de animais enfermos.(AU)


Subject(s)
Animals , Adaptation, Physiological , Physical Therapy Modalities/veterinary , Equipment Design , Respiratory Rate/physiology , Heart Rate/physiology , Horses/physiology
11.
Säo Paulo med. j ; 140(1): 71-80, Jan.-Feb. 2022. tab, graf
Article in English | LILACS | ID: biblio-1357462

ABSTRACT

ABSTRACT BACKGROUND: Although autonomic dysfunction has been shown to be associated with liver cirrhosis, the prevalence and prognostic implications are unclear. Abnormal heart rate variability (HRV), a measure of autonomic function, has not been well investigated in cirrhosis. OBJECTIVE: To evaluate the prevalence of high-risk HRV parameters in a cohort of cirrhotic patients and their association with cardiac dysfunction and mortality. DESIGN AND SETTING: Prospective observational study conducted in the Federal University of São Paulo. METHOD: A cohort of 120 patients, comprising 17 healthy controls and 103 cirrhotic outpatients, was evaluated and followed for 10 months. HRV analysis was based on 24-hour Holter monitoring and defined using time-domain and frequency-domain parameters. RESULTS: The HRV parameters were statistically lower in cirrhotic patients than in healthy subjects. High-risk HRV parameters were prevalent, such that 64% had at least one high-risk parameter. Time-domain parameters correlated with Child scores (P < 0.0001). In regression models, HRV parameters were independent predictors of diastolic dysfunction and mortality. During 10 months of follow-up, there were 11 deaths, all of patients with at least one high-risk HRV parameter. Kaplan-Meier analysis estimated low survival rates among patients with standard deviation of normal-to-normal RR intervals (SDNN) < 100. CONCLUSION: Reduced HRV is prevalent in liver cirrhosis and is related to cardiac dysfunction, severity of liver disease and mortality. Abnormal high-risk HRV parameters are prevalent among cirrhotic patients and are also predictors of mortality. Our findings highlight the need for a more careful cardiac evaluation of cirrhotic patients.


Subject(s)
Humans , Child , Arrhythmias, Cardiac , Electrocardiography, Ambulatory , Prospective Studies , Heart Rate/physiology , Liver Cirrhosis/complications
12.
Motriz (Online) ; 28: e10220000422, 2022. tab, graf
Article in English | LILACS | ID: biblio-1386382

ABSTRACT

Abstract Aim: This study verified how much performance damage can high-intensity efforts cause to FT shooting efficiency. Methods: A sample of 13 male amateur basketball players (19.9 ± 3.2 years; 76.7 ± 8.7 kg; 182 ± 10 cm) participated in the study on three non-consecutive days. A maximum progressive exercise test determined maximum heart rate (HRMax) during the first session. On the other two days (randomly assigned), athletes performed five bouts of basketball-related exercises, intense enough to raise HR to either 65% (S65) or 90% (S90) of HRMax, followed by two FT shots (totaling 10 FT). Results: FT performance was lower in S90 than in S65 (56.9% ± 18.9% vs 73.1% ± 12.5%, respectively; p = 0.026; ES = 1.01 - "large effect size"). Magnitude-based inference analysis considered shooting at S90 moderately disadvantageous and odds ratio analysis suggest that shooting FT at higher HR values represents an 11-fold chance to worsen performance (OR = 11.1; 95% CI = 1.79 to 68.9; p = 0.01). Conclusion: Basketball FT shooting efficiency is impaired after a bout of game-related high-intensity activity.


Subject(s)
Humans , Basketball , Efficiency , High-Intensity Interval Training , Heart Rate/physiology
13.
Motriz (Online) ; 28: e10220019721, 2022. graf
Article in English | LILACS | ID: biblio-1386376

ABSTRACT

Abstract Introduction: Chronic kidney disease (CKD) is a worldwide public health problem associated with an increased risk of death from cardiovascular complications. Although previous studies have described significant improvements in exercise in functional capacity and quality of life in patients with end-stage kidney disease (ESKD), there is a lack of studies that propose to assess its impact on cardiac function using transthoracic echocardiogram (ECHO). In addition, most of the intradialytic exercise protocols are inconsistent, and incomplete regarding their intensity prescription, time of intervention, and monitoring. Methods: The present study aims to evaluate the effects of an intradialytic cardiovascular rehabilitation protocol (ICRP) using medium intensity aerobic exercises, for 30 min. on cardiac function and functional capacity. In this 6-month longitudinal study, heart rate (HR), systolic (SBP) and diastolic (DBP) blood pressure, peripheral oxygen saturation (SpO2) and modified Borg scale will be analyzed in all HD sessions. The cardiac function will be evaluated by left ventricular ejection fraction (LVEF) through ECHO; functional capacity by the six-minute walk test (6MWT); quality of life through the SF-36 questionnaire and routine laboratory tests and KT/Vsp calculation before and after the ICRP. Conclusion: ICRP protocol will be examined and is expected to improve cardiac function, functional capacity, and quality of life in ESKD patients on hemodialysis.


Subject(s)
Humans , Quality of Life , Rehabilitation/standards , Exercise , Cardiovascular Abnormalities/etiology , Renal Insufficiency, Chronic/physiopathology , Longitudinal Studies , Heart Rate
14.
Motriz (Online) ; 28: e1021021620, 2022. tab, graf
Article in English | LILACS | ID: biblio-1375939

ABSTRACT

Abstract Background: Physiological parameters can be objectively measured for controlling and quantifying physical activity levels. Aims: This study aimed to systematically review the literature on volleyball athletes' profile regarding heart rate (HR) and HR variability (HRV). Methods: PubMed, Scopus, Embase and SportDiscus databases were searched to find studies presenting resting HR, maximal HR, mean HR and time domain HRV during training sessions and matches. Results: Volleyball athletes' profile was HRrest 66 ± 2.5 bpm (minimum 41 ± 10 bpm; maximum 82.4 ± 2.1 bpm), HRmax was 184 ± 1.3 bpm (minimum 170 ± 8.0 bpm; maximum 192 ± 3.0 bpm), HRtraining data was in average 150 ± 12 bpm (minimum 124.8 ± 6.2 bpm; maximum 171.5 ± 11.0 bpm) and mean HRmatch was 154 ± 5.5 bpm (minimum 105.3 ± 12.8 bpm; maximum 182.3 ± 5.2 bpm). The RR interval data resulting in a mean value of 1096 ± 4 ms (minimum 1027.6 ± 168.9 ms; maximum 1097.0 ± 59.5 ms) and the rMSSD index presented a mean value of 44 ± 14 ms (minimum 42.2 ± 19.8 ms; maximum 93.2 ± 65.8 ms). SDNN data were extracted, however, no meta-analysis was performed. Conclusion: Resting HR were high for the athletes' fitness level, maximal HR and RR intervals were very similar to athletes from other sports. Mean HR data do not seem to represent the real physical demand in matches and training. HRV time domain index showed low values and could be related to training loads or fatigue situations.


Subject(s)
Humans , Autonomic Nervous System , Volleyball/physiology , Athletes , Heart Rate/physiology , Exercise/physiology , Fatigue
15.
Motriz (Online) ; 28: e10220007621, 2022. tab, graf
Article in English | LILACS | ID: biblio-1360603

ABSTRACT

Abstract Aim: This study aimed to verify the reproducibility of an endurance test for master swimmers. Methods: Seventeen male swimmers, aged from 30 to 50 years (35.06 ± 5.36), weight (78.71 ± 13.06 kg), height (174.35 ± 0.07 cm), participated in this study. The participants underwent the Progressive Swim Test (PSwT), which corresponds to swimming progressively to exhaustion in a 25-meter pool, guided by the recording of sound signals indicating the swimming rhythm. We verified the following variables: heart rate before the test (BHR) and right after the end of the test (AHR), followed by the rate of perceived exertion (RPE) and a total of laps performed (SN - swimming number). For comparison between the three days of tests, the one-way repeated measures ANOVA with Tukey's Post-Hoc was performed. Relative reproducibility was performed by the r test and the intraclass correlation coefficient (ICC). Absolute reproducibility was determined using the coefficient of variation (CV) and the confidence interval (CI). Results: The results showed high reproducibility in (PSwT) in master swimmers in the analyzed variables of intergroup and intragroup with relative reproducibility of r > 0.60 and ICC > 0.70 and absolute reproducibility with CI 95% (lower −1.10 and upper 0.99) and CV < 10%. Most of the cases were within the limits of agreement of the Bland-Altman tests, all variables were considered a level of significance with (p <0.05). Conclusion: The Progressive Swim Test (PSwT) is a reproducible instrument in the assessment of endurance in master swimmers.


Subject(s)
Humans , Adult , Middle Aged , Swimming/physiology , Endurance Training , Reproducibility of Results , Analysis of Variance , Heart Rate
16.
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
17.
Article in Chinese | WPRIM | ID: wpr-936326

ABSTRACT

OBJECTIVE@#To develop a method for R-peak detection of ECG data from wearable devices to allow accurate estimation of the physiological parameters including heart rate and heart rate variability.@*METHODS@#A fully convolutional neural network was applied to predict the R-peak heatmap of ECG data and locate the R-peak positions. The heartbeat-aware (HA) module was introduced to enable the model to learn to predict the heartbeat number and R-peak heatmap simultaneously, thereby improving the capability of the model for extraction of the global context. The R-R interval estimated by the predicted heartbeat number was adopted to calculate the minimum horizontal distance for peak positioning. To achieve real-time R-peak detection on mobile devices, the deep separable convolution was adopted to reduce the number of parameters and the computational complexity of the model.@*RESULTS@#The proposed model was trained only with ECG data from wearable devices. At a tolerance window interval of 150 ms, the proposed method achieved R peak detection sensitivities of 100% for both wearable device ECG dataset and a public dataset (i.e. LUDB), and the true positivity rates exceeded 99.9%. As for the ECG signal of a 10 s duration, the CPU time of the proposed method for R-peak detection was about 23.2 ms.@*CONCLUSION@#The proposed method has good performance for R-peak detection of both wearable device ECG data and routine ECG data and also allows real-time R-peak detection of the ECG data.


Subject(s)
Algorithms , Electrocardiography , Heart Rate , Neural Networks, Computer , Signal Processing, Computer-Assisted , Wearable Electronic Devices
18.
Article in Chinese | WPRIM | ID: wpr-936260

ABSTRACT

Objective: To analyze the characteristics of heart rate variability (HRV) in patients with vestibular migraine (VM) and to explore its possible mechanism. Methods: Forty-eight patients with VM [17 males and 31 females, age (36.2±9.2) years], 44 patients with migraine [15 males and 29 females, age (34.4±9.0) years], and 30 patients with health check-ups during the same period [12 males and 18 females, age (34.6±6.5) years old] were selected as study subjects. Ambulatory ECG monitoring was performed in all subjects, and the HRV characteristics of each group were analyzed from both daytime and nighttime time phases. Time domain parameters were analyzed: standard deviation of normal to normal (SDNN), root mean square of successive differences (RMSSD), and percentage of normal to normal intervals differing by more than 50 ms (pNN50). The parameters in the frequency domain were analyzed: high frequency power (HF), low frequency power (LF), and the ratio of low frequency to high frequency power (LF/HF). Statistical analysis of the data was performed using SPSS 26.0 software. Results: At night, RMSSD (F=6.694) and HF (F=9.434) were lower in the VM and migraine groups compared to the control group, while LF/HF (F=16.049) and LF (F=9.434) were elevated compared to the control group, with statistically significant differences (P<0.05 or P<0.01), while LF was significantly elevated in the VM group compared to the migraine group, with a statistically significant (P<0.05). On the daytime measurements, mainly LF was elevated in the vestibular migraine group compared with the control group, while RMSSD was decreased compared with the control group, with statistically significant differences (P<0.05). Conclusion: Autonomic dysfunction characterized by sympathetic hyperfunction and vagal hypofunction is present in VM patients and is more pronounced at night. In addition, the degree of autonomic dysfunction may be more pronounced in VM patients than in migraine patients.


Subject(s)
Adult , Female , Heart Rate/physiology , Humans , Male , Middle Aged , Migraine Disorders , Vertigo
19.
Article in Chinese | WPRIM | ID: wpr-939749

ABSTRACT

Breathing is of great significance in the monitoring of patients with obstructive sleep apnea hypopnea syndrome, perioperative monitoring and intensive care. In this study, a respiratory monitoring and verification system based on optical capacitance product pulse wave (PPG) is designed, which can synchronously collect human PPG signals. Through algorithm processing, the characteristic parameters of PPG signal are calculated, and the respiratory signal and respiratory frequency can be extracted in real time. In order to verify the accuracy of extracting respiratory signal and respiratory rate by the algorithm, the system adds the nasal airflow respiratory signal acquisition module to synchronously collect the nasal airflow respiratory signal as the standard signal for comparison and verification. Finally, the root mean square error between the respiratory rate extracted by the algorithm from the pulse wave and the standard respiratory rate is only 1.05 times/min.


Subject(s)
Algorithms , Electrocardiography , Heart Rate , Humans , Photoplethysmography , Respiration , Respiratory Rate , Signal Processing, Computer-Assisted , Sleep Apnea, Obstructive
20.
Article in Chinese | WPRIM | ID: wpr-939625

ABSTRACT

The judgment of the type of arrhythmia is the key to the prevention and diagnosis of early cardiovascular disease. Therefore, electrocardiogram (ECG) analysis has been widely used as an important basis for doctors to diagnose. However, due to the large differences in ECG signal morphology among different patients and the unbalanced distribution of categories, the existing automatic detection algorithms for arrhythmias have certain difficulties in the identification process. This paper designs a variable scale fusion network model for automatic recognition of heart rhythm types. In this study, a variable-scale fusion network model was proposed for automatic identification of heart rhythm types. The improved ECG generation network (EGAN) module was used to solve the imbalance of ECG data, and the ECG signal was reproduced in two dimensions in the form of gray recurrence plot (GRP) and spectrogram. Combined with the branching structure of the model, the automatic classification of variable-length heart beats was realized. The results of the study were verified by the Massachusetts institute of technology and Beth Israel hospital (MIT-BIH) arrhythmia database, which distinguished eight heart rhythm types. The average accuracy rate reached 99.36%, and the sensitivity and specificity were 96.11% and 99.84%, respectively. In conclusion, it is expected that this method can be used for clinical auxiliary diagnosis and smart wearable devices in the future.


Subject(s)
Algorithms , Arrhythmias, Cardiac/diagnosis , Databases, Factual , Electrocardiography/methods , Heart Rate , Humans
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