title: Reliability and Validity of Tests to Assess Lower-Body Muscular Power in Children.
abstract: The purpose of this study was to analyze the reliability and the criterion-related 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 (1 RM) 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 1 RM leg extension test was high (all p < 0.001). The SLJ and the Abalakov jump tests showed the highest association with 1 RM leg extension test (R = 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.
authors: 1Department of Physical Education, University of Cadiz, Puerto Real, Spain; 2PROFITH "PROmoting FITness and Health through physical activity" research group, Department of Physical Education and Sports, School of Sport Science, University of Granada, Granada, Spain; and 3Masira Institute, School of Health Sciences, University of Santander, Bucaramanga, Colombia.
authors: Jorge R
authors: JR
authors: Fernandez-Santos
authors: Jonatan R
authors: JR
authors: Ruiz
authors: Daniel D
authors: DD
authors: Cohen
authors: Jose L
authors: JL
authors: Gonzalez-Montesinos
authors: Jose
authors: J
authors: Castro-Piñero
mesh_terms: D002648:Child; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D035002:Lower Extremity; D008297:Male; D009068:Movement / Q000502:physiology*; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000502:physiology*; D015203:Reproducibility of Results