Relationships among Countermovement Vertical Jump Performance Metrics, Strategy Variables, and Inter-limb Asymmetry in Females

Harry, John, Tinsley, Grant, Barker, Lee, Lake, Jason P., McMahon, John, Krzyszkowski, John and Chowning, Luke (2021) Relationships among Countermovement Vertical Jump Performance Metrics, Strategy Variables, and Inter-limb Asymmetry in Females. Sports Biomechanics. ISSN 1476-3141 (In Press)

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Abstract

Dependent variables commonly studied during countermovement vertical jump (CMVJ) tests largely stem from male-only studies despite females’ distinct energy storage and reutilization strategies. This could limit progress among females seeking increased CMVJ performance through targeted changes in certain variables. We explored relationships between CMVJ performance metrics (jump height, modified reactive strength index, jump power, and takeoff momentum) and a) temporal and force application variables and b) inter-limb force and yank (i.e., rate of force development) asymmetry in 31 recreationally active females. Participants performed 8 CMVJs while ground reaction force (GRF) data were obtained. Pearson product-moment correlation coefficients assessed the strength and direction of the associations. Twenty-six significant relationships (r≥±0.357; p<0.05) were detected across the CMVJ performance variables. The significantly correlated variables were generally isolated to only one of the four performance metrics. Only the percentage of concentric phase inter-limb force asymmetry was significantly associated with CMVJ performance, specifically jump power and takeoff momentum. Coaches and physical performance professionals should be aware of popular strategy variables’ association or lack of association with commonly studied performance metrics when seeking to understand or improve specific CMVJ jumping abilities in females.

Item Type: Article
Subjects: Q Science > QM Human anatomy
Q Science > QP Physiology
Divisions: Departments > Sport and Exercise Sciences
Depositing User: Jason Lake
Date Deposited: 25 Mar 2021 08:19
Last Modified: 25 Mar 2021 08:19
URI: http://eprints.chi.ac.uk/id/eprint/5673

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