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Article

Trunk muscle activation in the back and hack squat at the same relative loads (Forthcoming/Available Online)

Citation
Clark DR, Lambert M & Hunter A (2017) Trunk muscle activation in the back and hack squat at the same relative loads (Forthcoming/Available Online). Journal of Strength and Conditioning Research. https://doi.org/10.1519/jsc.0000000000002144

Abstract
The hack squat (HS) is likely to produce a greater 1 repetition maximum (1RM) compared to the back squat (BS). This can be attributed to the support of the trunk during the HS compared to no support during BS. This support however, may compromise trunk muscle activation (TMA), therefore producing different training adaptations. Accordingly, the purpose of this study was to compare 1RM in BS and HS and TMA at 4 relative loads, 65, 75, 85 and 95% of maximal system mass. Ten males completed 3 test sessions:1) BS and HS 1RM, 2) HS & BS neuromuscular test familiarization, and, 3) Neuromuscular test for 3 reps at 4 loads for BS and HS. BS TMA was significantly greater (p

Keywords
back squat; hack squat; trunk muscles; neuromuscular; electromyography; corestability

Journal
Journal of Strength and Conditioning Research

StatusPublished
Author(s)Clark, David R; Lambert, Michael; Hunter, Angus
Publication date online12/07/2017
Date accepted by journal10/07/2017
URLhttp://hdl.handle.net/1893/26150
PublisherLippincott, Williams & Wilkins for National Strength and Conditioning Association
ISSN1064-8011
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