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Implementing Eccentric Resistance Training—Part 2: Practical Recommendations
Open AccessArticle

Associations between Perceptual Fatigue and Accuracy of Estimated Repetitions to Failure during Resistance Exercises

1
Exercise, Health and Performance Faculty Research Group, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW 2141, Australia
2
Centre for Sport and Exercise Sciences, University of Malaya, Kuala Lumpur 50603, Malaysia
*
Author to whom correspondence should be addressed.
J. Funct. Morphol. Kinesiol. 2019, 4(3), 56; https://doi.org/10.3390/jfmk4030056
Received: 19 June 2019 / Revised: 30 July 2019 / Accepted: 5 August 2019 / Published: 9 August 2019
The ability to accurately identify proximity to momentary failure during a set of resistance exercise might be important to maximise training adaptations. This study examined the association between perceptual fatigue and the accuracy of the estimated repetitions to failure (ERF). Twenty-seven males and eleven females performed sets of 10 repetitions at specific loads for the chest press and leg-press. Following the completion of 10 repetitions, participants rated their fatigue and ERF and then proceeded to concentric failure (actual repetitions to failure) to determine the ERF accuracy (i.e., error-ERF). Small correlations were found between perceptual fatigue and error-ERF for the chest-press (r = −0.26, p = 0.001) and the leg-press (r = −0.18, p = 0.013). For actual repetitions to failure and error-ERF, a strong correlation was found for the chest-press (r = 0.68, p < 0.001) and a very strong correlation was foundfor the leg-press (r = 0.73, p < 0.001). Moderate correlations were found between perceptual fatigue and actual repetitions to failure for the chest-press (r = −0.42, p < 0.001) and leg-press (r = −0.40, p < 0.001). Overall, findings suggest that the accuracy of the estimated repetitions to failure is more strongly associated with proximity to task repetition failure rather than subjective feelings of fatigue. View Full-Text
Keywords: human performance; physical fatigue; fitness; perceived exertion; exercise training human performance; physical fatigue; fitness; perceived exertion; exercise training
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Hackett, D.A.; Selvanayagam, V.S.; Halaki, M.; Cobley, S.P. Associations between Perceptual Fatigue and Accuracy of Estimated Repetitions to Failure during Resistance Exercises. J. Funct. Morphol. Kinesiol. 2019, 4, 56.

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