Different Movement Strategies in the Countermovement Jump Amongst a Large Cohort of NBA Players
In: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP International Journal of Environmental Research and Public Health, Jg. 17 (2020), Heft 6394, p 6394
Online
unknown
Zugriff:
Previous research has demonstrated large amounts of inter-subject variability in downward (unweighting &
braking) phase strategies in the countermovement jump (CMJ). The purpose of this study was to characterize downward phase strategies and associated temporal, kinematic and kinetic CMJ variables. One hundred and seventy-eight NBA (National Basketball Association) players (23.6 ±
3.7 years, 200.3 ±
8.0 cm
99.4 ±
11.7 kg
CMJ height 68.7 ±
7.4 cm) performed three maximal CMJs. Force plate and 3D motion capture data were integrated to obtain kinematic and kinetic outputs. Afterwards, athletes were split into clusters based on downward phase characteristics (k-means cluster analysis). Lower limb joint angular displacement (i.e., delta flexion) explained the highest portion of point variability (89.3%), and three clusters were recommended (Ball Hall Index). Delta flexion was significantly different between clusters and players were characterized as &ldquo
stiff flexors&rdquo
&ldquo
hyper flexors&rdquo
or &ldquo
hip flexors&rdquo
There were no significant differences in jump height between clusters (p >
0.05). Multiple regression analyses indicated that most of the jumping height variance was explained by the same four variables, (i.e., sum concentric relative force, knee extension velocity, knee extension acceleration, and height) regardless of the cluster (p <
0.05). However, each cluster had its own unique set of secondary predictor variables.
Titel: |
Different Movement Strategies in the Countermovement Jump Amongst a Large Cohort of NBA Players
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Autor/in / Beteiligte Person: | Reeves, Trent ; Ugrinowitsch, Carlos ; Jacob T Rauch ; Elliott, Marcus ; Borkan, Leah ; Leidersdorf, Eric |
Link: | |
Zeitschrift: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP International Journal of Environmental Research and Public Health, Jg. 17 (2020), Heft 6394, p 6394 |
Veröffentlichung: | 2020 |
Medientyp: | unknown |
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