The Effects of 4-weeks of Plyometric Training on Reactive Strength Index and Leg Stiffness in Male Youths
作者： Rhodri S. Lloyd , Jon L. Oliver , Michael G. Hughes , Craig A. Williams
DOI: 10.1519/JSC.0B013E318242D2EC
关键词:
摘要: Although previous pediatric research has reported performance improvements in muscular power, agility, speed, and rate-of-force development after exposure to plyometric training, the effects on reactive strength index (RSI) leg stiffness remain unclear. One hundred twenty-nine boys from 3 different age groups (9, 12, 15 years) participated were divided into either an experimental (EXP) or control (CON) group within their respective groups. The EXP followed a twice-weekly, 4-week training program, whereas CON normal physical education lessons. Preintervention postintervention measures collected for RSI (during maximal hopping) submaximal hopping). Both 12- 15-year-old made significant both absolute relative (p < 0.05). 9-year-old all ages did not make changes stiffness. 12-year-old cohort also 15- cohorts, ages, failed show any RSI. study concludes that program are dependent during childhood.
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