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Test-Retest Reliability of a Novel Isokinetic Squat Device with Strength-Trained Athletes

Lookup NU author(s): Dr Deb DulsonORCiD


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© 2016 National Strength and Conditioning Association.Bridgeman, LA, McGuigan, MR, Gill, ND, and Dulson, DK. Test-retest reliability of a novel isokinetic squat device with strength-trained athletes. J Strength Cond Res 30(11): 3261-3265, 2016 - The aim of this study was to investigate the test-retest reliability of a novel multijoint isokinetic squat device. The subjects in this study were 10 strength-trained athletes. Each subject completed 3 maximal testing sessions to assess peak concentric and eccentric force (N) over a 3-week period using the Exerbotics squat device. Mean differences between eccentric and concentric force across the trials were calculated. Intraclass correlation coefficients (ICCs) and coefficients of variation (CVs) for the variables of interest were calculated using an excel reliability spreadsheet. Between trials 1 and 2 an 11.0 and 2.3% increase in mean concentric and eccentric forces, respectively, was reported. Between trials 2 and 3 a 1.35% increase in the mean concentric force production and a 1.4% increase in eccentric force production was reported. The mean concentric peak force CV and ICC across the 3 trials was 10% (7.6-15.4) and 0.95 (0.87-0.98) respectively. However, the mean eccentric peak force CV and ICC across the trials was 7.2% (5.5-11.1) and 0.90 (0.76-0.97), respectively. Based on these findings it is suggested that the Exerbotics squat device shows good test-retest reliability. Therefore practitioners and investigators may consider its use to monitor changes in concentric and eccentric peak force.

Publication metadata

Author(s): Bridgeman LA, McGuigan MR, Gill ND, Dulson DK

Publication type: Article

Publication status: Published

Journal: Journal of Strength and Conditioning Research

Year: 2016

Volume: 30

Issue: 11

Pages: 3261-3265

Print publication date: 01/11/2016

Acceptance date: 02/04/2016

ISSN (print): 1064-8011

ISSN (electronic): 1533-4295

Publisher: NSCA National Strength and Conditioning Association


DOI: 10.1519/JSC.0000000000001410

PubMed id: 26950357


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