Validity and reliability of a flywheel squat test in sport

Beato, Marco, Fleming, Adam, Coates, Alexander and Dello Iacono, Antonio (2020) Validity and reliability of a flywheel squat test in sport. Journal of sports sciences. ISSN 1466-447X

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The aims of this study were to examine the test-retest reliability and construct validity of the flywheel (FW)-squat test. Twenty male amateur team sports athletes (mean±SD: age 23±3 years) completed one familiarization session and two testing sessions including: FW-squat test with an inertial load of 0.061 kg.m2, standing long jump (SLJ), countermovement jump (CMJ) and 5-m change of direction (COD-5m) tests, and isokinetic strength assessments of the knee extensor and flexor muscles. Test-retest reliability was assessed with intraclass correlation coefficient (ICC) and coefficient of variation (CV) of data collected. Construct validity was determined as the degree of relationships between the FW-squat test outputs and both athletic tests and isokinetic assessments scores computed with Pearson’s correlation coefficients. Excellent relative (ICC=0.94–0.95) and acceptable absolute (CV=5.9%-6.8%) reliability scores were found for both concentric and eccentric power outputs collected during the FW-squat test. The same outputs showed moderate to large positive correlations with concentric and eccentric knee extensor and flexor muscle peak force values (r range: 0.465–0.566) measured during the isokinetic test. The FW-squat test is a valid and reliable test to assess lower limb performance given its correlation with isokinetic test, as well as its excellent relative and acceptable absolute reliability.

Item Type: Article
Uncontrolled Keywords: Iso-inertial, eccentric-overload, performance, sports, strength
Subjects: Q Science > QP Physiology
Divisions: Faculty of Health & Science > Department of Science & Technology
Depositing User: Marco Beato
Date Deposited: 30 Sep 2020 10:56
Last Modified: 06 Oct 2021 01:38

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