A Proposed Method for Evaluating Drop Jump Performance with One Force Platform

McMahon, John J., Lake, Jason P., Stratford, Callum and Comfort, Paul (2021) A Proposed Method for Evaluating Drop Jump Performance with One Force Platform. Biomechanics, 1 (2). pp. 178-189. ISSN 2673-7078

[img] Text (© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).)
biomechanics-01-00015.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB)
[img] Archive (© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).)
non-pdf-files.zip - Other
Available under License Creative Commons Attribution.

Download (181kB)

Abstract

The drop jump (DJ) is commonly utilised to assess athletes. The criterion two force platform (2FP) method of assessing DJ performance involves two adjacent force platforms, one for the box and one for the athlete to rebound from. Most researchers and practitioners only have access to one force platform (1FP) and they rarely account for the often considerable discrepancy between box height and drop height (DH). Therefore, this study aimed to determine the criterion validity of evaluating DJ performance with 1FP. Twenty-six young male sports students performed three DJs, from a 0.30 m and 0.40 m high box, on two adjacent force platforms. The DH, touchdown velocity and several performance variables were calculated using the 2FP and 1FP methods. Ordinary least-products regression identified no fixed or proportional bias between methods for any DJ variable. The mean DH was 10% lower than the 0.30 m box and 14% lower than the 0.40 m high box. This discrepancy highlights the importance of accounting for DH when conducting DJ assessments. In conclusion, the 1FP method of evaluating DJ performance is a valid alternative to the criterion 2FP method and could be embedded into automated force analysis software for researchers and practitioners to utilise.

Item Type: Article
Additional Information: ** From MDPI via Jisc Publications Router ** History: accepted 12-07-2021; pub-electronic 16-07-2021. ** Licence for this article: https://creativecommons.org/licenses/by/4.0/
Uncontrolled Keywords: force plate, force analysis, validity, drop height, depth jump
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Q Science > QP Physiology
Divisions: Departments > Sport and Exercise Sciences
SWORD Depositor: Publications Router Jisc
Depositing User: Publications Router Jisc
Date Deposited: 26 Jul 2021 14:00
Last Modified: 26 Jul 2021 14:00
URI: http://eprints.chi.ac.uk/id/eprint/5858

Actions (login required)

View Item View Item