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Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength.
J Sports Sci. 2018 Sep; 36(18):2087-2095.JS

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.

Authors+Show Affiliations

a School of Sport , Ulster University , N. Ireland. b Ulster Rugby , Irish Rugby Football Union , N. Ireland.a School of Sport , Ulster University , N. Ireland. c Sport and Exercise Science Research Institute, Ulster University , N. Ireland.a School of Sport , Ulster University , N. Ireland. c Sport and Exercise Science Research Institute, Ulster University , N. Ireland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29405842

Citation

Drake, David, et al. "Familiarization, Validity and Smallest Detectable Difference of the Isometric Squat Test in Evaluating Maximal Strength." Journal of Sports Sciences, vol. 36, no. 18, 2018, pp. 2087-2095.
Drake D, Kennedy R, Wallace E. Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength. J Sports Sci. 2018;36(18):2087-2095.
Drake, D., Kennedy, R., & Wallace, E. (2018). Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength. Journal of Sports Sciences, 36(18), 2087-2095. https://doi.org/10.1080/02640414.2018.1436857
Drake D, Kennedy R, Wallace E. Familiarization, Validity and Smallest Detectable Difference of the Isometric Squat Test in Evaluating Maximal Strength. J Sports Sci. 2018;36(18):2087-2095. PubMed PMID: 29405842.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength. AU - Drake,David, AU - Kennedy,Rodney, AU - Wallace,Eric, Y1 - 2018/02/06/ PY - 2018/2/7/pubmed PY - 2018/7/3/medline PY - 2018/2/7/entrez KW - Strength-trained KW - responsiveness KW - squat performance KW - stability reliability SP - 2087 EP - 2095 JF - Journal of sports sciences JO - J Sports Sci VL - 36 IS - 18 N2 - 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. SN - 1466-447X UR - https://www.unboundmedicine.com/medline/citation/29405842/Familiarization_validity_and_smallest_detectable_difference_of_the_isometric_squat_test_in_evaluating_maximal_strength_ L2 - https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1436857 DB - PRIME DP - Unbound Medicine ER -