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

Abstract 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 to...

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Main Authors: Hanye Zhao (Author), Dasom Seo (Author), Junichi Okada (Author)
Format: Book
Published: BMC, 2023-02-01T00:00:00Z.
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001 doaj_fe871f0584d944e487a843e638e8d84c
042 |a dc 
100 1 0 |a Hanye Zhao  |e author 
700 1 0 |a Dasom Seo  |e author 
700 1 0 |a Junichi Okada  |e author 
245 0 0 |a Validity of using perceived exertion to assess muscle fatigue during back squat exercise 
260 |b BMC,   |c 2023-02-01T00:00:00Z. 
500 |a 10.1186/s13102-023-00620-8 
500 |a 2052-1847 
520 |a Abstract 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. 
546 |a EN 
690 |a Perceived exertion 
690 |a Neuromuscular fatigue 
690 |a Borg scale 
690 |a Surface electromyography 
690 |a Resistance training 
690 |a Sports medicine 
690 |a RC1200-1245 
655 7 |a article  |2 local 
786 0 |n BMC Sports Science, Medicine and Rehabilitation, Vol 15, Iss 1, Pp 1-11 (2023) 
787 0 |n https://doi.org/10.1186/s13102-023-00620-8 
787 0 |n https://doaj.org/toc/2052-1847 
856 4 1 |u https://doaj.org/article/fe871f0584d944e487a843e638e8d84c  |z Connect to this object online.