Changes in early and maximal isometric force production in response to moderate- and high-load strength and power training

Comfort, P ORCID: https://orcid.org/0000-0002-1131-8626, Jones, PA ORCID: https://orcid.org/0000-0002-3295-7670, Thomas, C, Dos'Santos, TM, McMahon, JJ and Suchomel, TJ 2020, 'Changes in early and maximal isometric force production in response to moderate- and high-load strength and power training' , Journal of Strength and Conditioning Research .

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Abstract

The aims of this study were to determine the changes in early (50-, 100-, 150-, 200-, 250 ms) and maximal isometric force production, in response to a 4-week period of moderate-load resistance training (60-82.5% 1 repetition maximum [1RM]), followed by a 4-week period of high-load (80-90% 1RM) resistance training. Thirty-four subjects (age 19.5 ± 2.8 years; height 1.72 ± 0.08 m; body mass 69.9 ± 11.4 kg; maximal power clean 0.92 ± 0.03 kg·kg) participated in this study. Only trivial-to-moderate (0.2-2.7%, d = 0.00-0.88) and nonsignificant (p > 0.05) changes in early isometric force production were observed in response to the moderate-load training period, whereas very large (9.2-14.6%, d = 2.71-4.16), significant (p ≤ 0.001) increases in early isometric force production were observed in response to high-load training. In contrast, there was a very large, significant increase in peak force (PF) across the moderate-load phase (7.7 ± 11.8%, d = 2.02, p = 0.003), but only a moderate significant increase in PF (3.8 ± 10.6%, d = 1.16, p = 0.001) across the high-load phase. The results of this study indicate that high-load multijoint resistance training, that follows moderate-load training, results in superior increases in early multi-joint force production, compared with the changes observed after moderate-load resistance training.

Item Type: Article
Additional Information: ** From PubMed via Jisc Publications Router **Journal IDs: eissn 1533-4287 **Article IDs: pubmed: 32187146 **History: published 12-03-2020
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: 02 Apr 2020 10:39
Last Modified: 02 Apr 2020 14:24
URI: http://usir.salford.ac.uk/id/eprint/56754

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