Independent and Combined Effects of Weight Status and Maturation on Aerobic Fitness in Adolescent School-Aged Males. Issue 9 (September 2020)

• Record Type: Journal Article
• Authors: Batista, Mariana B.; Valente-dos-Santos, João; Duarte, João P.; Sousa-e-Silva, Paulo; Coelho-e-Silva, Manuel J.; Werneck, André O.; Ohara, David; Cyrino, Edilson S.; Ronque, Enio R.V.
• Is Part Of: Journal of strength and conditioning research. Volume 34:Issue 9(2020)
• Publication Date: 2020-09
• Subjects: cardiorespiratory fitness -- scaling -- VO2 peak -- allometry; Physical education and training -- Periodicals; Weight training -- Physiological aspects -- Periodicals; Physical fitness -- Periodicals; 613.7
• DOI: 10.1519/JSC.0000000000002363
• Languages: English
• ISSNs: 1064-8011

Abstract

Abstract : Abstract: Batista, MB, Valente-dos-Santos, J, Duarte, JP, Sousa-e-Silva, P, Coelho-e-Silva, MJ, Werneck, AO, Ohara, D, Cyrino, ES, and Ronque, ERV. Independent and combined effects of weight status and maturation on aerobic fitness in adolescent school-aged males. J Strength Cond Res 34(9): 2663–2671, 2020—This study aimed to examine the independent and combined effects of pubertal and weight status on concurrent measurements of peak oxygen (V[Combining Dot Above]O2 peak) in school-aged adolescent males. The final sample included 49 boys (12.3 ± 0.8 years). V[Combining Dot Above]O2 peak was derived from an incremental progressive maximal protocol using a motorized treadmill. In addition, maximal oxygen uptake was estimated from a 20-m shuttle run test. Static allometric models were obtained as an alternative to performance output per unit of size descriptors. Weight status had a significant effect on V[Combining Dot Above]O2 peak using simple ratio standards per unit of body mass (BM) with adolescents classified as overweight and obese (OWOB) attaining lower values of V[Combining Dot Above]O2 peak. A similar trend was noted for the allometric models adopting body mass (ml·kgBM −0.542 ·min −1 ), stature (L·m −2.602 ·min), and fat-free mass (FFM; ml·kgFFM −0.907 ·min −1 ). Findings also suggest the influence and interaction of pubertal and weight status on absolute values of V[Combining Dot Above]O2 peak. Considering the data obtained, linear equations to estimate V[Combining Dot Above]O2 peak from the 20-m shuttle run test should not be applied to boys who are OWOB because it will produce inaccurate assessments of cardiorespiratory fitness and penalize those who are heavier. Equations for V[Combining Dot Above]O2 peak prediction need to be specific for pubertal status and preferably consider FFM as a body size descriptor.