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Article Title

RELATIONSHIPS BETWEEN JUMP KINETICS AND BASKETBALL REBOUNDING PERFORMANCE – AN EXPLORATORY STUDY

Abstract

Dimitrije Cabarkapa and Andrew C. Fry

Jayhawk Athletic Performance Laboratory, University of Kansas, Lawrence, KS, USA

Incorporation of intelligence software for sports performance analysis has become highly prominent in recent years. It has been documented that vertical jump kinetics assessed with force plate technology may provide additional insight into athletes’ performances and detect areas for further improvement. PURPOSE: The purpose of this exploratory study was to examine a relationship between jump kinetic variables and game rebounding performance in men’s basketball. METHODS: Twenty-seven Division-I men’s basketball players were monitored during each competitive season for a total of six consecutive years. Ground reaction forces during countermovement vertical jump (CMVJ) testings administered on multiple occasions as a part of team testing protocols were derived from a force plate (Kistler Instrumente AG, Switzerland) and analyzed by data analysis software (Sparta Science, Menlo Park, CA). Average Eccentric rate of force development (ERFD), average relative concentric force (ARCF), and relative concentric impulse (RCI) were compared between the top (T; n=13) and bottom half (B; n=14) performers based on the number of total rebounds (TR) accumulated during their competitive seasons. To assure adequate comparison, only players with ≥10 min·game-1 playing time contribution were included in the following analysis. One-way ANOVA was used to determine the difference between the group means and discriminant analysis to classify T vs. B performers. RESULTS: Although being able to accurately classify T vs. B performers in 78% cases (λ=0.62; χ2=11.23; p=0.01; R2-canonical=0.61), no differences (p>0.05) were found for ERFD (N·s-1; T= 5054.4±1601.9; B= 6201.1±1963.7), ARCF (N·kg-1; T=21.4±2.2; B=21.4±2.2), and RCI (Ns·kg-1; T= 6.1±0.3; B=5.9±0.3). CONCLUSION: This exploratory analysis suggests a positive relationship between kinetic parameters observed in the present study during in-season CMVJ testings and on-court rebounding performance. However, there are additional factors that need to also be examined more closely (e.g., playing position, style of play, game strategies) that may have substantial contributions on the rebounding performance.

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