The reliability and magnitude of time-dependent force-time characteristics during the Isometric Midthigh Pull are affected by both testing protocol and analysis choices.

Guppy, S, Kotani, Y, Brady, C, Connolly, S, Comfort, P ORCID: https://orcid.org/0000-0002-1131-8626 and Haff, G 2022, 'The reliability and magnitude of time-dependent force-time characteristics during the Isometric Midthigh Pull are affected by both testing protocol and analysis choices.' , Journal of strength and conditioning research, 36 (5) , pp. 1191-1199.

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Abstract

Guppy, SN, Kotani, Y, Brady, CJ, Connolly, S, Comfort, P, and Haff, GG. Title: The reliability and magnitude of time-dependent force-time characteristics during the isometric mid-thigh pull are impacted by both testing protocol and analysis choices. J Strength Cond Res 36(5): 1191-1199, 2022-This study aimed to investigate whether the use of short-duration (SHORT) isometric midthigh pull (IMTP) trials resulted in greater reliability and magnitude of time-dependent force-time characteristics than traditionally performed IMTP trials (TRAD). Fourteen subjects with >6 months' training experience with the power clean volunteered to take part in the study. Subjects performed five ∼1-second IMTP trials (SHORT) and five 5-second IMTP trials (TRAD). SHORT resulted in substantially more reliable rate of force development (RFD) measures (intraclass correlation coefficient [ICC] = 0.97-0.99; coefficient of variation [CV] = 2.6-7.0%), particularly during time bands from force-onset to 150 ms, compared with TRAD when trials were selected for analysis based on peak force (ICC = 0.66-0.83; CV = 14.1-38.5%). Selecting TRAD trials based on RFD0-200 resulted in similar reliability compared with SHORT of those same epochs (ICC = 0.97-0.99; CV = 2.5-7.8%). Furthermore, SHORT resulted in significantly greater force at specific time points, RFD, and impulse compared with TRAD trials (p = 0.001-0.033; g = -0.16 to -0.66). Based on these results, strength and conditioning professionals should use specific testing protocols (i.e., TRAD and SHORT) depending on the component of an athlete's force-generating capacity that they wish to assess and remain aware of the effect analysis choices they have on the reliability of IMTP force-time characteristics. [Abstract copyright: Copyright © 2022 National Strength and Conditioning Association.]

Item Type:	Article
Schools:	Schools > School of Health and Society
Journal or Publication Title:	Journal of strength and conditioning research
Publisher:	Lippincott, Williams & Wilkins
ISSN:	1533-4287
SWORD Depositor:	Publications Router
Depositing User:	Publications Router
Date Deposited:	29 Jul 2022 05:21
Last Modified:	29 Jul 2022 05:21
URI:	https://usir.salford.ac.uk/id/eprint/63924

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