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Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength

Drake, David, Kennedy, Rodney and Wallace, Eric S (2018) Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength. Journal of Sports Sciences . [Journal article]

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URL: https://doi.org/10.1080/02640414.2018.1436857

DOI: 10.1080/02640414.2018.1436857

Abstract

Isometric multi-joint tests are considered reliable and have strong relationships with 1RM performance. However, limited evidence is available for the isometric squat in terms of effects of familiarization and reliability. This study aimed to assess, the effect of familiarization, stability reliability, determine the smallest detectible difference, and the correlation of the isometric squat test with 1RM squat performance. Thirty-six strength-trained participants volunteered to take part in this study. Following three familiarization sessions, test–retest reliability was evaluated with a 48-hour window between each time point. Isometric squat peak, net and relative force were assessed. Results showed three familiarizations were required, isometric squat had a high level of stability reliability and smallest detectible difference of 11% for peak and relative force. Isometric strength at a knee angle of ninety degrees had a strong significant relationship with 1RM squat performance. In conclusion, the isometric squat is a valid test to assess multi-joint strength and can discriminate between strong and weak 1RM squat performance. Changes greater than 11% in peak and relative isometric squat performance should be considered as meaningful in participants who are familiar with the test.

Item Type:Journal article
Keywords:Strength-trained, responsiveness, stability reliability, squat performance
Faculties and Schools:Faculty of Life and Health Sciences > School of Sport
Faculty of Life and Health Sciences
Research Institutes and Groups:Sport and Exercise Sciences Research Institute
Sport and Exercise Sciences Research Institute > Centre for Sports Science and Sports Medicine
ID Code:39578
Deposited By: Mrs Julie Haydock
Deposited On:20 Feb 2018 09:25
Last Modified:06 Aug 2019 22:23

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