Effects and mechanisms of strength training in children.

摘要: It has been demonstrated that strength training can be organized in children a safe and effective way. However, there is limited data regarding its impact on muscle hypertrophy. This study investigated the effects of high-intensity (HIS) knee extensor/flexor strength, countermovement (CMJ) jumping height, postural control, soft lean mass cross-sectional area (CSA) dominant leg prepubertal children. Thirty-two participated this were assigned to an intervention (INT; N=17) or control class ( N=15). The INT 10 weeks weight-machine based HIS integrated physical education. Pre/post tests included measurements peak torque extensors/flexors at 60 180°/s, CMJ sway, by bioelectrical impedance analysis, CSA (m. quadriceps) magnetic resonance imaging. resulted significant increases (60°/s 180°/s). did not produce changes mass, CSA. Although was increasing children, it unable affect size. appears neural factors rather than hypertrophy account for observed gains