A comparison of kinetic and kinematic variables during the pull from the knee and hang pull, across loads

Meechan, D, McMahon, JJ ORCID: https://orcid.org/0000-0001-9952-7846, Suchomel, TJ and Comfort, P ORCID: https://orcid.org/0000-0002-1131-8626 2020, 'A comparison of kinetic and kinematic variables during the pull from the knee and hang pull, across loads' , Journal of Strength and Conditioning Research, 34 (7) , pp. 1819-1829.

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Abstract

Kinetic and kinematic variables during the pull from the knee (PFK) and hang pull (HP) were compared in this study. Eighteen men (age = 29.43 ± 3.95 years; height 1.77 ± 0.08 m; body mass 84.65 ± 18.79 kg) performed the PFK and HP with 40, 60, 80, 100, 120, and 140% of 1-repetition maximum (1RM) power clean, in a progressive manner. Peak force (PF), mean force (MF), peak system velocity (PSV), mean system velocity (MSV), peak power (PP), mean power (MP), and net impulse were calculated from force-time data during the propulsion phase. During the HP, small-to-moderate yet significantly greater MF was observed compared with the PFK, across all loads (p ≤ 0.001; Hedges g = 0.47-0.73). Hang pull PSV was moderately and significantly greater at 100-140% 1RM (p = 0.001; g = 0.64-0.94), whereas MSV was significantly greater and of a large-to-very large magnitude compared with PFK, across all loads (p < 0.001; g = 1.36-2.18). Hang pull exhibited small to moderate and significantly greater (p ≤ 0.011, g = 0.44-0.78) PP at 100-140%, with moderately and significantly greater (p ≤ 0.001, g = 0.64-0.98) MP across all loads, compared with the PFK. Hang pull resulted in a small to moderate and significantly greater net impulse between 100 and 140% 1RM (p = 0.001, g = 0.36-0.66), compared with PFK. The results of this study demonstrate that compared with the PFK, the HP may be a more beneficial exercise to enhance force-time characteristics, especially at loads of ≥1RM.

Item Type: Article
Additional Information: ** From PubMed via Jisc Publications Router **Journal IDs: eissn 1533-4287 **Article IDs: pubmed: 32282627 **History: published 09-04-2020
Schools: Schools > School of Health and Society
Journal or Publication Title: Journal of Strength and Conditioning Research
Publisher: Lippincott, Williams & Wilkins
ISSN: 1064-8011
Related URLs:
SWORD Depositor: Publications Router
Depositing User: Publications Router
Date Deposited: 10 Jul 2020 08:24
Last Modified: 31 Jul 2020 05:48
URI: http://usir.salford.ac.uk/id/eprint/56924

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