Validity of using perceived exertion to assess muscle fatigue during back squat exercise

BMC Sports Science, Medicine and Rehabilitation

Research

Junichi Okada¹  Dasom Seo²  Hanye Zhao³ 

[1] Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan;Graduate School of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan;Graduate School of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan;Graduate School of Sport Sciences, Waseda University, Mikajima 2-579-15, 359-1192, Tokorozawa, Saitama, Japan;

关键词: Perceived exertion;    Neuromuscular fatigue;    Borg scale;    Surface electromyography;    Resistance training;   

DOI  :  10.1186/s13102-023-00620-8

 received in 2022-08-05, accepted in 2023-01-20,  发布年份 2023

来源: Springer

【 摘 要 】

The rating of perceived exertion (RPE) scale has been found to reflect physiological responses, and this study aimed to assess the validity of using the Borg CR-10 scale and velocity loss to evaluate muscle fatigue quantified by surface electromyography during back squat (BS) exercise. A total of 15 collegiate male athletes underwent three non-explosive BS tasks comprising low, medium, and high volumes at 65% of their one-repetition maximum. RPEs, spectral fatigue index (SFI), and velocity loss during BS exercise were assessed throughout the trials. Significant differences in overall RPE (p < 0.001) and average SFI (p < 0.05) were observed between the conditions, whereas no significant difference was observed in average velocity loss. Significant increases in RPE and SFI (p < 0.001) were observed within the exercise process, whereas a significant increase in velocity loss was not observed. Correlation analyses indicated a significant correlation between RPE and SFI obtained during exercise (r = 0.573, p < 0.001). However, no significant correlation was observed between velocity loss and SFI. These results demonstrated that RPE could be used as a muscle fatigue predictor in BS exercise, but that velocity loss may not reflect muscle fatigue correctly when participants cannot and/or are not required to perform BS explosively. Furthermore, practitioners should not use velocity loss as a muscle fatigue indicator in some resistance exercise situations, such as rehabilitation, beginner, and hypertrophy programs.

【 授权许可】

CC BY   
© The Author(s) 2023

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