BACKGROUND: The maintenance of maximal aerobic speed (MAS) until exhaustion is an important parameter for the evaluation of sports performance and prescription and planning of training. OBJECTIVE: To validate a 6-minute race test (6MRT) as a predictor of MAS in university endurance athletes. METHODS: Twenty two university endurance athletes (12 males and 10 females) were part of the study. The design was pre-experimental. The primary variables were the time of maintenance of the MAS on the field through a Time Limit Test (Tlim test), and the VO2 max (laboratory and field). The statistical analysis of the time and ventilatory variables was carried out using descriptive statistics; the comparison between males and females for all variables was carried out through a t-Student test for independent samples (p< 0.05). RESULTS: The performance in the Tlim test was 356.4 ± 52.9 and 327.0 ± 120.2 s in males and females, respectively. CONCLUSION: Based on the time of maintenance of the MAS (Tlim test), the 6MRT is a valid test to determine the MAS in university endurance male athletes. However, the MAS in university endurance female athletes must be evaluated with a shorter test (between 5 and 5.30 minutes long).
Introducción: Un entrenamiento pliométrico basado en HIIT que mejore la potencia muscular en futbolistas adolescentes, aún no ha sido del todo estudiado. Objetivo: Analizar el efecto de un entrenamiento pliométrico basado en HIIT sobre la potencia muscular en futbolistas Sub-17. Materiales y métodos: Veinticuatro futbolistas divididos en dos grupos fueron parte del estudio (Grupo Experimental [GE] n = 12 y Grupo Control n = 12). Las variables fueron: altura (h) de salto y Pico de potencia (Pp) a través del Test de Sargent. El protocolo utilizado fue un entrenamiento pliométrico basado en HIIT. Para el análisis estadístico se utilizó la prueba t de Student y el tamaño del efecto fue calculado con la prueba d de Cohen. Resultados: La h en el Test de Sargent presentó un aumento significativo post intervención sólo para el GE (p < 0.0001; Tamaño del Efecto = 0.763). En relación a los Pp, sólo el GE presentó un aumento significativo post intervención (p < 0.0001; Tamaño del Efecto = 0.413). Conclusiones: Los resultados dejaron en evidencia que el entrenamiento pliométrico basado en HIIT es una herramienta efectiva para incrementar la h de salto y Pp en futbolistas adolescentes Sub-17.
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