In:
Journal of Strength and Conditioning Research, Ovid Technologies (Wolters Kluwer Health), Vol. 35, No. 3 ( 2021-03), p. 616-625
Abstract:
Daugherty, HJ, Weiss, LW, Paquette, MR, Powell, DW, and Allison, LE. Potential predictors of vertical jump performance: Lower extremity dimensions and alignment, relative body fat, and kinetic variables. J Strength Cond Res 35(3): 616–625, 2021—The association of structural and kinetic variables with restricted vertical jump (RVJ) displacement without and with added mass was examined in 60 men and women. Added mass (weighted vest) simulated a 5% increase in body fat (BF%). Independent variables included BF%, thigh length, and static Q-angle (Q-angle s ), and while performing RVJ, different expressions of frontal-plane knee angle (FPKA), dynamic Q-angle (Q-angle d ), vertical ground reaction force (vGRF), concentric vertical impulse (I z ), concentric rate of force development (CRFD), and vertical power (P z ). Variables having significant ( p ≤ 0.05) negative correlations with RVJ displacement included BF% ( r = −0.76) and Q-angle s ( r = −0.55). Those having significant ( p ≤ 0.05) positive correlations with RVJ displacement included peak and average concentric P z ( r range = 0.74–0.81), peak and average concentric vGRF ( r range = 0.46–0.67), I z ( r range = 0.32–0.54), thigh length ( r = 0.31), minimum Q-angle d ( r = 0.31), and maximum FPKA ( r = 0.28). Variables not associated ( p 〉 0.05) with RVJ displacement included minimum and excursion FPKA ( r = 0.11 and 0.23), maximum, excursion, and average Q-angle d ( r = 0.24, 0.11, and 0.22), and CRFD ( r range = 0.19–0.24). A simple regression model predicted RVJ displacement ( p = 1.00) for the simulated 5% increase in body fat. To maximize jumping performance, (a) high levels of body fat should be avoided, (b) peak and average P z , vGRF, and I z should be maximized through training, and (c) having a lower Q-angle s is associated with better jumping ability.
Type of Medium:
Online Resource
ISSN:
1064-8011
DOI:
10.1519/JSC.0000000000003962
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
2021
detail.hit.zdb_id:
2142889-X
SSG:
31
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