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Reliability of two-dimensional measures associated with bilateral drop-landing performance

Howe, L, Bampouras, TM, North, JS and Waldron, M (2020) Reliability of two-dimensional measures associated with bilateral drop-landing performance. Movement and Sports Sciences - Science et Motricite, 2020-J (108). pp. 39-47. ISSN 2118-5735

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Open Access URL: https://ijpefs.org/index.php/ijpefs/article/view/2... (Published version)


The aim of this study was to establish the within-session reliability for two-dimensional (2D) video analysis of sagittal- and frontal-plane measures during bilateral drop-landing tasks. Thirty-nine recreational athletes (22 men, 17 women, age = 22 ± 4 years, height = 1.74 ± 0.15 m, body mass 70.2 ± 15.1 kg) performed five bilateral drop-landings from 50, 100 and 150% of maximum countermovement jump height, twice on the same day. Measures of reliability for initial contact angle, peak flexion angle and joint displacement for the hip, knee, and ankle joints, frontal-plane projection angles (FPPA), as well as inter-limb asymmetries in joint displacement were assessed. No systematic bias was present between trials (P>0.05). All kinematic measurements showed relative reliability ranging from large to near perfect (ICC = 0.52-0.96). Absolute reliability ranged between measures, with CV% between 1.0-1.6% for initial contact angles, 1.9-7.9% for peak flexion angles, 5.3-22.4% for joint displacement, and 1.6-2.3% for FPPA. Absolute reliability for inter-limb asymmetries in joint displacement were highly variable, with minimal detectable change values ranging from 6.0-13.2°. Therefore, 2D video analysis is a reliable tool for numerous measures related to the performance of bilateral drop-landings.

Item Type: Article
Uncontrolled Keywords: 0903 Biomedical Engineering; 1106 Human Movement and Sports Sciences
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: EDP Sciences
SWORD Depositor: A Symplectic
Date Deposited: 21 Jun 2023 10:16
Last Modified: 21 Jun 2023 10:16
DOI or ID number: 10.1051/sm/2019037
URI: https://researchonline.ljmu.ac.uk/id/eprint/19976
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