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Open AccessArticle

Countermovement Jump Inter-Limb Asymmetries in Collegiate Basketball Players

1
Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73019, USA
2
Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, OK 73019 USA
*
Author to whom correspondence should be addressed.
Sports 2019, 7(5), 103; https://doi.org/10.3390/sports7050103
Received: 27 February 2019 / Revised: 17 April 2019 / Accepted: 26 April 2019 / Published: 30 April 2019
(This article belongs to the Special Issue Physical Performance in Team Sports)
The purpose of the present study was to establish the intrasession and intersession reliability of variables obtained from a force plate that was used to quantitate lower extremity inter-limb asymmetry during the bilateral countermovement jump (CMJ). Secondarily, a comparison was performed to determine the influence of the jump protocol CMJ with or without an arm swing (CMJ AS and CMJ NAS, respectively) on inter-limb asymmetries. Twenty-two collegiate basketball players performed three CMJ AS and three CMJ NAS on dual force platforms during two separate testing sessions. A majority of variables met the acceptable criterion of intersession and intrasession relative reliability (ICC > 0.700), while fewer than half met standards established for absolute reliability (CV < 10%). CMJ protocol appeared to influence asymmetries; Concentric Impulse-100 ms, Eccentric Braking Rate of Force Development, Eccentric Deceleration, and Force at Zero velocity were significantly different between jumping conditions (CMJAS versus CMJ NAS; p < 0.05). The present data establish the reliability and smallest worthwhile change of inter-limb asymmetries during the CMJ, while also identifying the influence of CMJ protocol on inter-limb asymmetries, which can be useful to practitioners and clinicians in order to effectively monitor changes associated with performance, injury risk, and return-to-play strategies. View Full-Text
Keywords: athlete monitoring; athlete performance; reliability; fatigue monitoring; bilateral countermovement jump; CMJ arm swing; CMJ without arm swing athlete monitoring; athlete performance; reliability; fatigue monitoring; bilateral countermovement jump; CMJ arm swing; CMJ without arm swing
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Heishman, A.; Daub, B.; Miller, R.; Brown, B.; Freitas, E.; Bemben, M. Countermovement Jump Inter-Limb Asymmetries in Collegiate Basketball Players. Sports 2019, 7, 103.

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