Repositorio Digital

Resumen en ingles

Fernandez-Santos, JR, Ruiz, JR, Cohen, DD, GonzalezMontesinos, JL, and Castro-Pin˜ero, J. Reliability and validity of tests to assess lower body muscular power in children. J Strength Cond Res 29(8): 2277–2285, 2015—The purpose of this study was to analyze the reliability and the criterionrelated validity of several lower-body muscular power tests (i.e., standing long jump [SLJ], squat jump, countermovement jump, and Abalakov jump) in children aged 6–12 years. Three hundred sixty three healthy children (168 girls) agreed to participate in this study. All the lower-body muscular power tests were performed twice (7 days apart), whereas the 1 repetition maximum (1RM) leg extension test was performed 2 days after the first session of testing. All the tests showed a high reliability (intertrial difference close to 0 and no significant differences between trials, all p . 0.05). The association between the lower-body muscular power tests and 1RM leg extension test was high (all p , 0.001). The SLJ and the Abalakov jump tests showed the highest association with 1RM leg extension test (R2 = 0.700, test result, weight, height, sex, and age were added in the model). The SLJ test can be a useful tool to assess lower-body muscular power in children when laboratory methods are not feasible because it is practical, time efficient, and low in cost and equipment requirements.