A comparison of kinetic and kinematic variables during the midthigh pull and countermovement shrug, across loads

Meechan, D; Suchomel, TJ; McMahon, JJ; Comfort, P

Abstract

This study compared kinetic and kinematic variables during the midthigh pull (MTP) and countermovement shrug (CMS). Eighteen men (age: 29.43 ± 3.95 years, height: 1.77 ± 0.08 m, body mass: 84.65 ± 18.79 kg, and 1 repetition maximum [1RM] power clean: 1.02 ± 0.18 kg·kg) performed the MTP and CMS at intensities of 40, 60, 80, 100, 120, and 140% 1RM, in a progressive manner. Peak force (PF), mean force (MF), peak velocity, peak barbell velocity (BV), peak power, (PP), mean power (MP), and net impulse were calculated from force-time data during the propulsion phase. During the CMS, PF and MF were maximized at 140% 1RM and was significantly greater than the MTP at all loads (p ≤ 0.001, Hedges g = 0.66-0.90); p < 0.001, g = 0.74-0.99, respectively). Peak velocity and BV were significantly and meaningfully greater during the CMS compared with the MTP across all loads (p < 0.001, g = 1.83-2.85; p < 0.001, g = 1.73-2.30, respectively). Similarly, there was a significantly and meaningfully greater PP and MP during the CMS, across all loads, compared with the MTP (p < 0.001, g = 1.45-2.22; p < 0.001, g = 1.52-1.92). Impulse during the CMS was also significantly greater across all loads (p < 0.001, g = 1.20-1.66) compared with the MTP. Results of this study demonstrate that the CMS may be a more advantageous exercise to perform to enhance force-time characteristics when compared with the MTP, due to the greater kinetics and kinematic values observed.

Citation

Meechan, D., Suchomel, T., McMahon, J., & Comfort, P. (2020). A comparison of kinetic and kinematic variables during the midthigh pull and countermovement shrug, across loads. Journal of Strength and Conditioning Research, 34(7), 1830-1841. https://doi.org/10.1519/JSC.0000000000003288

• Journal Article Type: Article
• Acceptance Date: May 31, 2019
• Online Publication Date: Apr 30, 2020
• Publication Date: Jul 1, 2020
• Deposit Date: Jul 17, 2020
• Publicly Available Date: Apr 30, 2021
• Journal: Journal of Strength and Conditioning Research
• Print ISSN: 1064-8011
• Electronic ISSN: 1533-4287
• Publisher: Lippincott, Williams & Wilkins
• Volume: 34
• Issue: 7
• Pages: 1830-1841
• DOI: https://doi.org/10.1519/JSC.0000000000003288
• Publisher URL: https://doi.org/10.1519/JSC.0000000000003288
• Related Public URLs: http://www.nsca-jscr.org/