You could be reading the full-text of this article now if you...

If you have access to this article through your institution,
you can view this article in

Peak Vertical Jump Power Estimations in Youths and Young Adults

Amonette, William E.1; Brown, Lee E.2; De Witt, John K.1; Dupler, Terry L.1; Tran, Tai T.2; Tufano, James J.1,2; Spiering, Barry A.2

Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3182576f1e
Original Research

Abstract: Amonette, WE, Brown, LE, De Witt, JK, Dupler, TL, Tran, TT, Tufano, JJ, and Spiering, BA. Peak vertical jump power estimations in youths and young adults. J Strength Cond Res 26(7): 1749–1755, 2012—The purpose of this study was to develop and validate a regression equation to estimate peak power (PP) using a large sample of athletic youths and young adults. Anthropometric and vertical jump ground reaction forces were collected from 460 male volunteers (age: 12–24 years). Of these 460 volunteers, a stratified random sample of 45 subjects representing 3 different age groups (12–15 years [n = 15], 16–18 years [n = 15], and 19–24 years [n = 15]) was selected as a validation sample. Data from the remaining 415 subjects were used to develop a new equation (“Novel”) to estimate PP using age, body mass (BM), and vertical jump height (VJH) via backward stepwise regression. Independently, age (r = 0.57), BM (r = 0.83), and VJ (r = 0.65) were significantly (p < 0.05) correlated with PP. However, age did not significantly (p = 0.53) contribute to the final prediction equation (Novel): PP (watts) = 63.6 × VJH (centimeters) + 42.7 × BM (kilograms) − 1,846.5 (r = 0.96; standard error of the estimate= 250.7 W). For each age group, there were no differences between actual PP (overall group mean ± SD: 3,244 ± 991 W) and PP estimated using Novel (3,253 ± 1,037 W). Conversely, other previously published equations produced PP estimates that were significantly different than actual PP. The large sample size used in this study (n = 415) likely explains the greater accuracy of the reported Novel equation compared with previously developed equations (n = 17–161). Although this Novel equation can accurately estimate PP values for a group of subjects, between-subject comparisons estimating PP using Novel or any other previously published equations should be interpreted with caution because of large intersubject error (± >600 W) associated with predictions.

Author Information

1Human Performance Laboratory, Fitness and Human Performance Program, University of Houston-Clear Lake, Houston, Texas

2Department of Kinesiology, Center for Sport Performance, California State University, Fullerton, California

Address correspondence to William E. Amonette,

© 2012 National Strength and Conditioning Association