PURPOSE: The aim of the present study was to model developmental changes in explosive power based on the contribution of chronological age, anthropometrical characteristics, motor coordination parameters, and flexibility. METHODS: Two different longitudinal, multilevel models were obtained to predict countermovement jump (CMJ) and standing broad jump (SBJ) performance in 356 high-level, youth soccer players, age 11-14 yr at baseline. Biological maturity status was estimated (age at peak height velocity [APHV]), and variation in the development of explosive power was examined based on three maturity groups (APHV; earliest < P33, P33 < average < P66, latest > P66). RESULTS: The best-fitting model for the CMJ performance of the latest maturing players could be expressed as: 8.65 + 1.04 × age + 0.17 × age + 0.15 × leg length + 0.12 × fat-free mass + 0.07 × sit-and-reach + 0.01 × moving sideways. The best models for average and earliest maturing players were the same as for the latest maturing players, minus 0.73 and 1.74 cm, respectively. The best-fitting model on the SBJ performance could be expressed as follows: 102.97 + 2.24 × age + 0.55 × leg length + 0.66 × fat-free mass + 0.16 × sit-and-reach + 0.13 jumping sideways. Maturity groups had a negligible effect on SBJ performance. CONCLUSIONS: These findings suggest that different jumping protocols (vertical vs long jump) highlight the need for special attention in the evaluation of jump performance. Both protocols emphasized growth, muscularity, flexibility, and motor coordination as longitudinal predictors. The use of the SBJ is recommended in youth soccer identification and selection programs because biological maturity status has no effect on its development through puberty.
PURPOSE: The aim of the present study was to model developmental changes in explosive power based on the contribution of chronological age, anthropometrical characteristics, motor coordination parameters, and flexibility. METHODS: Two different longitudinal, multilevel models were obtained to predict countermovement jump (CMJ) and standing broad jump (SBJ) performance in 356 high-level, youth soccer players, age 11-14 yr at baseline. Biological maturity status was estimated (age at peak height velocity [APHV]), and variation in the development of explosive power was examined based on three maturity groups (APHV; earliest < P33, P33 < average < P66, latest > P66). RESULTS: The best-fitting model for the CMJ performance of the latest maturing players could be expressed as: 8.65 + 1.04 × age + 0.17 × age + 0.15 × leg length + 0.12 × fat-free mass + 0.07 × sit-and-reach + 0.01 × moving sideways. The best models for average and earliest maturing players were the same as for the latest maturing players, minus 0.73 and 1.74 cm, respectively. The best-fitting model on the SBJ performance could be expressed as follows: 102.97 + 2.24 × age + 0.55 × leg length + 0.66 × fat-free mass + 0.16 × sit-and-reach + 0.13 jumping sideways. Maturity groups had a negligible effect on SBJ performance. CONCLUSIONS: These findings suggest that different jumping protocols (vertical vs long jump) highlight the need for special attention in the evaluation of jump performance. Both protocols emphasized growth, muscularity, flexibility, and motor coordination as longitudinal predictors. The use of the SBJ is recommended in youth soccer identification and selection programs because biological maturity status has no effect on its development through puberty.
Authors: Irineu Loturco; Ian Jeffreys; Ronaldo Kobal; César C Cal Abad; Rodrigo Ramirez-Campillo; Vinicius Zanetti; Lucas A Pereira; Fábio Y Nakamura Journal: J Hum Kinet Date: 2018-10-15 Impact factor: 2.193
Authors: Priscila Custódio Martins; Anderson Santiago Teixeira; Luiz Guilherme Antonacci Guglielmo; Juliana Sabino Francisco; Diego Augusto Santos Silva; Fábio Yuzo Nakamura; Luiz Rodrigo Augustemak de Lima Journal: Int J Environ Res Public Health Date: 2021-04-21 Impact factor: 3.390