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1.
Educ. fis. deporte ; 36(2): http://aprendeenlinea.udea.edu.co/revistas/index.php/educacionfisicaydeporte/article/view/328878, Julio 2017.
Article in Spanish | LILACS | ID: biblio-995954

ABSTRACT

Objetivo: determinar cómo influye la masa muscular de la extremidad inferior y superior, en el volumen de oxígeno máximo por kilogramo de masa muscular (VO2max/Kgmus/min) en jóvenes deportistas en función de su especialidad deportiva y grupo de edad. Método: muestra compuesta por 400 deportistas de ambos sexos, del Centro de Tecnificación de Cheste (Valencia) clasificados en 3 grupos de edad: <12-13, 14-16 y 17-20 años, y de especialidades deportivas de resistencia. Los datos fisiológicos fueron obtenidos de un test ergoespirométrico incremental en rampa (protocolo Wasserman) y los datos antropométricos del protocolo ISAK. Resultados: los resultados derivados del Análisis de Varianza (ANOVA), indican que entre las variables fisiológicas y antropométricas se obtienen diferencias significativas para la especialidad de atletismo y triatlón, y triatlón y natación (p<0,05), así como para el grupo de <12-13 y 14-16, y 14-16 y 17-20 años (p<0,05).


Objective: To determine how the muscle mass of the lower and upper extremities influences the maximum volume of oxygen per kilogram of muscle mass (VO2max/Kgmus/min) in young athletes according to their sport specialty and age group. Method: The sample is composed of 400 athletes of both sexes from the Technification Center in Cheste (Valencia) classified into 3 age groups: <12-13, 14-16 and 17-20 years old, practicing endurance sports. The physiological data were obtained from an ergospirometry incremental ramp test (Wasserman protocol) and the anthropometric data from the ISAK protocol. Results: The results from the Variance Analysis (ANOVA) indicate that the physiological and anthropometric variables show significant differences for the specialty of track and field and triathlon, as well as triathlon and swimming (p <0,05) and for the group of <12 -13 and 14-16, and 14-16 and 17-20 years (p <0,05).


Objetivo: Determinar como a massa muscular das extremidades inferior e superior influência o volume máximo de oxigênio por quilograma de massa muscular (VO2max /kg/min) em atletas jovens de acordo com sua especialidade esportiva e faixa etária. Método: A amostra é composta por 400 atletas de ambos os sexos do Centro de Tecnificação de Cheste (Valência) classificados em 3 faixas etárias: <12-13, 14-16 e 17-20 anos, e de especialidades esportivas de resistência. Os dados fisiológicos foram obtidos a partir de um teste de rampa ergospirométrica incremental (protocolo Wasserman) e dados antropométricos do protocolo ISAK. Resultado: Os resultados derivados da Análise de Variância (ANOVA) indicam que, entre as variáveis fisiológicas e antropométricas, foram obtidas diferenças significativas para a especialidade de atletismo e triatlo, e triatlo e natação (p<0,05), bem como para o grupo de <12-13 e 14-16, e 14-16 e 17-20 anos (p<0,05).


Subject(s)
Oxygen Consumption , Sports , Anthropometry
2.
Rev. mex. cardiol ; 28(1): 21-28, Jan.-Mar. 2017. tab
Article in English | LILACS | ID: biblio-902317

ABSTRACT

Abstract: Introduction: Young people who start the university life face a key stage for the acquisition of habits and lifestyles. The test Course Navette is one of the most used worldwide because of its easy measurement, validity, effectiveness and sensitivity in different age ranks. Material and methods: An observational, descriptive and transversal study with quantitative approach; with 100 students participating (43 men and 57 women) with an average age of 21.06 ± 2.43 at the University of Santander, Cúcuta. For the development of this research, were obtained measurements anthropometric, hematological, physiological and performance on an empty stomach Leger test. Results: 62% of participants had a BMI of normal weight, 24% overweight and obesity and underweight was 8 and 6% respectively. In turn 32% of men and 17.5% of women have high cardiovascular risk according to abdominal circumference. VO2max. in the Leger test was 32.92 ± 7.12 to 533.80 ± 371.34 meters traveled. Regarding glycemia before the test was 80.99 ± 11.91 and after 105.59 ± 20.89. Conclusion: No significant differences in fat percentage were found (p = 0,863), muscle (p = 0,740) and water (p = 0,804) after Leger test. However, there were significant changes in FC, TAS, TAD, red cells, white cells, hemoglobin, platelets and blood glucose levels (p = 0,000). Regarding the VO2max. (p = 0,597) and travel meters (p = 0,619) no differences were found by gender.


Resumen: Introducción: Los jóvenes que inician la vida universitaria enfrentan una etapa clave y vital para la adquisición de hábitos y estilos de vida. El test de Course Navette es uno de los test más utilizados a nivel mundial, debido a su fácil medición, validez, efectividad y sensibilidad en diferentes rangos de edad. Material y métodos: Un estudio observacional, descriptivo y transversal con enfoque cuantitativo; en el que participaron 100 estudiantes (43 hombres y 57 mujeres) con una edad promedio de 21.06 ± 2.43 de la Universidad de Santander, Cúcuta. Para el desarrollo de esta investigación, se obtuvieron medidas antropométricas, hematológicas, fisiológicas y realización del test de Leger en ayunas. Resultados: El 62% de los participantes tuvieron un índice de masa corporal (IMC) de normopeso, el 24% sobrepeso y para obesidad e infrapeso fue 8 y 6% respectivamente. A su vez el 32% de los hombres y el 17.5% de las mujeres tienen alto riesgo cardiovascular según medidas de circunferencia abdominal. El VO2máx. en el test de Leger fue de 32.92 ± 7.12 con 533.80 ± 371.34 metros recorridos. Respecto a la glucemia antes del test fue de 80.99 ± 11.91 y después 105.59 ± 20.89. Conclusión: No se encontraron diferencias significativas en el porcentaje graso (p = 0,863), muscular (p = 0,740) y agua (p = 0,804) después del test de Leger. No obstante, hubo cambios significativos en la FC, TAS, TAD, glóbulos rojos, blancos, linfocitos, hemoglobina, plaquetas y glucemia (p=0,000). Respecto al VO2máx. (p = 0,597) y metros recorridos (p = 0,619) no se encontraron diferencias según género.

3.
Rev. venez. endocrinol. metab ; 14(2): 128-136, jun. 2016. ilus, tab
Article in Spanish | LILACS-Express | LILACS | ID: lil-798256

ABSTRACT

Objetivo: Comparar el efecto del hábito deportivo sobre la aptitud físico-motora y cardiorrespiratoria en escolares. Métodos: Se estudiaron 58 escolares varones (33 hábito deportivo y 25 controles), con edades entre 7,5 y 9,5 años. Se evaluaron: antecedentes familiares, personales, hábitos psicobiológicos, antropometría y química sanguínea. Se llevó a cabo una prueba de resistencia de 1000 m para registrar la aptitud físico-motora clasificándolos en deficiente, regular, promedio, bueno y excelente. Se calculó el volumen máximo de oxigeno (VO2máx) que los clasifica en capacidad aeróbica: baja, regular, media, buena y excelente. Se realizó prueba de esfuerzo para el cálculo del índice cronotrópico y evaluación de la recuperación parasimpática. Resultados: El tiempo promedio en la prueba de resistencia en el grupo con hábito deportivo habitual (366,27±38,20 seg) fue significativamente menor (p<0,001) con respecto al grupo control (416,40±55,79 seg). En la aptitud físico-motora se encontró un desempeño significativamente mejor en los niños con hábito deportivo habitual que en los controles (p<0,005). Este mismo grupo presentó un consumo máximo de oxígeno mayor con un 45,19 ± 5,50 mL/kg/min que los controles con un 37,82 ± 8,20 mL/kg/min (p<0,001). Al categorizar el VO2máx, se encontró una significativa mayor frecuencia de capacidad aeróbica buena y excelente en el grupo con hábito deportivo habitual (p<0,002). En la prueba de esfuerzo y parámetros metabólicos no hubo diferencia. Conclusión: En escolares con hábito deportivo habitual hay una mejor capacidad aeróbica que en los controles. La actividad física mejora la aptitud físico-motora y cardiorrespiratoria sin diferencia en la capacidad funcional y pruebas bioquímicas.


Objective: Compare the effects of sport habits on physical and motor aptitude as well as cardiorespiratory fitness in school children. Methods: Fifty-eight male school children with ages between 7,5 to 9,5 years old were studied (33 with regular sport habits activities and 25 controls). The clinical evaluation included: family history, personal, psychobiological habits, anthropometry and blood analysis. Each child participated in a 1000 meters´ race to test his physical and motor fitness. The performance was ranked as deficient, regular, average, good, and excellent. The maximum volume of oxygen (VO2máx) was determined in order to qualify each participant according to his aerobic capacity: low, regular, average, good, and excellent. The cardiac functional capacity was evaluated through treadmill stress test by the calculation of the chronotropic and the evaluation of parasympathetic recovery index. Results: The average time in strength test for the group with sport habits (366,27±38,20 sec) was significantly lower (p<0,001). In term of the physical and motor fitness, children with sport habits performed significantly better (p< 0,005). Moreover, the sport habits group presented a maximum consumption of oxygen significantly greater 45,19 ± 5,50 mL/kg/min than the controls 37,82±8,20 mL/kg/min (p<0,001). By categorizing VO2max, a significantly higher frequency of good and excellent aerobic capacity was found in the group with sport habits (p<0,002). The treadmill stress test and the metabolic parameters no showed significant difference. Conclusions: School children with sport habits showed better aerobic capacity than those with a sedentary lifestyle. The motor function and biochemical tests showed similar results.

4.
Chinese Pharmacological Bulletin ; (12)1987.
Article in Chinese | WPRIM | ID: wpr-550483

ABSTRACT

The effects of naphthylmethyl isoquinoline (NI) and verapamil (Ver) on contractile tension and volume of oxygen consumption were compared on isolated guinea pig left atrips and cat papillary muscles. The results showed that NI and Ver diminished the Ca++-dependent contractile tension and volume of oxygen consumption by electrically driven preparations. Under the influence of increasing doses of NI (10 ~100?mol/L)and Ver(0.72~3.6?mol/L) linear reduction of contractile tension and volume of oxygen consumption were seen. These effects were reversed by increasing the extracellular Ca++ concentration. These results indicate that NI may be an effective calcium-antagonist very similar to Ver.

5.
Chinese Pharmacological Bulletin ; (12)1987.
Article in Chinese | WPRIM | ID: wpr-550378

ABSTRACT

The LVdP/dtmax, LVSP, AP and Vmax of the rat hearts in vivo were increased by Sophoridine ( 2 mg/kg, given to rats iv ) by 19.5, 13.1, 14.8 and 28.2% respectively. Such a positive inotropic effect lasted for more than 5 min and was statistically significant. Adrenaline (0.16 ?g/kg, iv ) could also increase the LVdP/dtmax and Vmax of the heart obviously and this action was not stronger than Sri after uses of drugs except at 0.5 min and vanished more quickly. There was an increment of MVO2I because of the increased arterial pressure within 3 min after use of Sri, which was much less than adrenaline. The present results show Sri strengthened the cardial force for longer time and affected the arterial pressure and MVO2I less than adrenaline in the rat hearts in vivo.

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