Ignacio Chirosa Ríos

Estudio comparativo de la capacidad de realizar sprints repetidos entre jugadores de balonmano y baloncesto amateurs y profesionales

Introduccion y objetivos: Los deportes de equipo requieren jugadores que puedan realizar un numero elevado de sprints cortos, intercalados con periodos de recuperacion o de intensidad, y a este tipo de esfuerzos se le ha denominado capacidad de realizar sprints repetidos (RSA). Aunque la importancia de estos esfuerzos esta constatada en deportes de equipo, la diferencia entre deportistas de distintas disciplinas debe ser estudiada debido a la variabilidad de esfuerzos en los numerosos deportes colectivos. La presente investigacion va encaminada a determinar las diferencias y analogias en test RSA entre deportistas amateurs y profesionales de deportes colectivos distintos como son el baloncesto y balonmano. Metodo: Se evaluaron 4 equipos, 2 de baloncesto y 2 de balonmano (divididos en amateurs y profesionales). El test RSA realizado fue 8 × 30 m con 25 s de recuperacion, en pista con celulas fotoelectricas. Resultados: Los resultados obtenidos no muestran diferencias significativas en las variables cineticas entre los diferentes grupos. Si se encontraron diferencias entre baloncesto profesional y balonmano profesional (p < 0,05) en las variables mejor sprint y aceleracion 0-10 m. Se observo un descenso en la potencia (entre el 20,51 y el 23,37%) entre el sprint 1 y 8 en los 4 grupos, pero no hubo diferencias entre ellos. Conclusiones: El tipo de esfuerzos realizados por deportistas de deportes de cooperacion y oposicion de disciplinas semejantes (como baloncesto y balonmano) es similar en el test RSA, debido a que los esfuerzos realizados en competicion se asemejan mucho entre deportes y con los esfuerzos realizados en el protocolo utilizado.

Effect of two complex training protocols of back squats in blood indicators of muscular damage in military athletes.

[Purpose] The aim of this study was to determine the variations in the blood muscular damage indicators post application of two complex training programs for back squats. [Subjects and Methods] Seven military athletes were the subjects of this study. The study had a quasi-experimental cross-over intra-subject design. Two complex training protocols were applied, and the variables to be measured were cortisol, metabolic creatine kinase, and total creatine kinase. For the statistical analysis, Student’s t-test was used. [Results] Twenty-four hours post effort, a significant decrease in cortisol level was shown for both protocols; however, the metabolic creatine kinase and total creatine kinase levels showed a significant increase. [Conclusion] Both protocols lowered the indicator of main muscular damage in the blood supply (cortisol). This proved that the work weight did not generate significant muscular damage in the 24-hour post-exercise period.

Effects of small-sided exercises on body composition and maximal oxygen uptake in adolescents

BACKGROUND The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. AIM To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. MATERIAL AND METHODS We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. RESULTS A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group. CONCLUSIONS Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.Background: The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. Aim: To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. Material and Methods: We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. Results: A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p<0.01). No changes were recorded in the control group. Conclusions: Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.BACKGROUND The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. AIM To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. MATERIAL AND METHODS We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. RESULTS A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group. CONCLUSIONS Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life.To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males.We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test.A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group.Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.

Efecto de los juegos reducidos en la composición corporal y la condición física aeróbica en un grupo de adolescentes escolares

BACKGROUND The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. AIM To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. MATERIAL AND METHODS We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. RESULTS A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group. CONCLUSIONS Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.Background: The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. Aim: To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. Material and Methods: We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. Results: A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p<0.01). No changes were recorded in the control group. Conclusions: Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.BACKGROUND The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life. AIM To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males. MATERIAL AND METHODS We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test. RESULTS A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group. CONCLUSIONS Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.The regular practice of physical activity contributes to weight control and improves maximal oxygen uptake (VO2max), socialization and quality of life.To determine the effect of moderate-to-vigorous physical activity on body composition and VO2max in a group of overweight school-age males.We studied fifty-five overweight males aged 15.6 ± 0.7 years. Participants were divided in two groups (experimental and control groups). The intervention in the experimental group was the practice of small-sided games during 60 minutes, two days per week and during 11 weeks. At baseline and the end of the intervention, body composition was measured using bioimpedance and VO2max was calculated using the Course Navette test.A 7% reduction in the percentage of body fat and a 9% increase in VO2max were observed in the experimental group (p < 0.01). No changes were recorded in the control group.Eleven weeks of small-sided exercises performed twice per week increased VO2max and reduced fat mass in overweight adolescents.