Resistance training during pre- and early puberty: efficacy, trainability, mechanisms, and persistence.

Resistance training, under conditions of high intensity and volume loading, is effective in increasing strength in pre- and early pubertal children. The mechanisms underlying strength gain with resistance training in this population have not been established unequivocally. However, resistance training appears to have little if any effect on muscle size (hypertrophy), but it has resulted in neurological (percent motor unit activation and …