Effects of Resistance Training at Different Intensities in Prepubertal Children Soccer Players
Abstract
Introduction: Strength is an essential component of physical fitness, in this sense, it could represent a fundamental unit in the processes of growth and development of children Objective: To compare the effects of two resistance training protocols in the development of strength and muscular endurance in prepubertal children footballers. Methods: 32 pre pubertal children (10.4 ± 0.3 years), participated in this prospective longitudinal study divided into two groups for convenience, low loads group (LL) and moderate loads group (ML). Both groups performed two weekly sessions of resistance training for 8 weeks, completing the same training volume, with a relative intensity of 50% for LL and 75% of 1RM for ML in the leg press and bench press exercises. We evaluated 1RM bench press (1RM-BP) and leg press (1RM-LP); maximum achievable repetitions to 50% and 75% in bench press (BP50% and BP75%) and leg press (LP50% and LP75%). Results. The 1RM-BP increased significantly in both groups (ML: 27% and LL 19%) as it did in 1RM-LP (ML: 50% LL: 31%). The LP50%, LP75%, and BP50% increased significantly in both groups (LL: 73.27%, 13.40%, 5.34%; ML: 21.4%, 29.1%, 3.68% respectively). Only the ML group achieved improvements in BP75% (39%). Conclusions. The strength and muscular endurance can be improved during childhood with prescribing protocols strength training with moderate loads during the initial period of training.
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