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An analysis of the perceived causes leading to task-failure in resistance-exercises

BACKGROUND: While reaching task-failure in resistance-exercises is a topic that attracts scientific and applied interest, the underlying perceived reasons leading to task-failure remain underexplored. Here, we examined the reasons subjects attribute to task-failure as they performed resistance-exerc...

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Autores principales: Emanuel, Aviv, Rozen Smukas, Isaac Isur, Halperin, Israel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391967/
https://www.ncbi.nlm.nih.gov/pubmed/33194334
http://dx.doi.org/10.7717/peerj.9611
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author Emanuel, Aviv
Rozen Smukas, Isaac Isur
Halperin, Israel
author_facet Emanuel, Aviv
Rozen Smukas, Isaac Isur
Halperin, Israel
author_sort Emanuel, Aviv
collection PubMed
description BACKGROUND: While reaching task-failure in resistance-exercises is a topic that attracts scientific and applied interest, the underlying perceived reasons leading to task-failure remain underexplored. Here, we examined the reasons subjects attribute to task-failure as they performed resistance-exercises using different loads. METHODS: Twenty-two resistance-trained subjects (11-females) completed one Repetition-Maximum (RM) tests in the barbell squat and bench-press. Then, in the next two counterbalanced sessions, subjects performed two sets to task-failure in both exercises, using either 70% or 83% of 1RM. Approximately 30 seconds after set-completion, subjects verbally reported the reasons they perceived to have caused them to reach task-failure. Their answers were recorded, transcribed, and thematically analyzed. The differences between the frequencies of the identified categories were then tested using a mixed logistic regression model. RESULTS: The most commonly reported reason was muscle fatigue (54%, p < 0.001), mostly of the target muscles involved in each exercise. However, remote muscles involved to a lesser extent in each exercise were also reported. Approximately half of the remaining reasons included general fatigue (26%), pain (12%), cardiovascular strain (11%), and negative affect (10%), with the latter three reported more often in the squat (p = 0.022). CONCLUSIONS: In contrast to our expectations, task-failure was perceived to be caused by a range of limiting factors other than fatigue of the target muscles. It now remains to be established whether different perceived limiting factors of resistance-exercises lead to different adaptations, such as muscular strength and hypertrophy.
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spelling pubmed-73919672020-11-12 An analysis of the perceived causes leading to task-failure in resistance-exercises Emanuel, Aviv Rozen Smukas, Isaac Isur Halperin, Israel PeerJ Kinesiology BACKGROUND: While reaching task-failure in resistance-exercises is a topic that attracts scientific and applied interest, the underlying perceived reasons leading to task-failure remain underexplored. Here, we examined the reasons subjects attribute to task-failure as they performed resistance-exercises using different loads. METHODS: Twenty-two resistance-trained subjects (11-females) completed one Repetition-Maximum (RM) tests in the barbell squat and bench-press. Then, in the next two counterbalanced sessions, subjects performed two sets to task-failure in both exercises, using either 70% or 83% of 1RM. Approximately 30 seconds after set-completion, subjects verbally reported the reasons they perceived to have caused them to reach task-failure. Their answers were recorded, transcribed, and thematically analyzed. The differences between the frequencies of the identified categories were then tested using a mixed logistic regression model. RESULTS: The most commonly reported reason was muscle fatigue (54%, p < 0.001), mostly of the target muscles involved in each exercise. However, remote muscles involved to a lesser extent in each exercise were also reported. Approximately half of the remaining reasons included general fatigue (26%), pain (12%), cardiovascular strain (11%), and negative affect (10%), with the latter three reported more often in the squat (p = 0.022). CONCLUSIONS: In contrast to our expectations, task-failure was perceived to be caused by a range of limiting factors other than fatigue of the target muscles. It now remains to be established whether different perceived limiting factors of resistance-exercises lead to different adaptations, such as muscular strength and hypertrophy. PeerJ Inc. 2020-07-27 /pmc/articles/PMC7391967/ /pubmed/33194334 http://dx.doi.org/10.7717/peerj.9611 Text en ©2020 Emanuel et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Kinesiology
Emanuel, Aviv
Rozen Smukas, Isaac Isur
Halperin, Israel
An analysis of the perceived causes leading to task-failure in resistance-exercises
title An analysis of the perceived causes leading to task-failure in resistance-exercises
title_full An analysis of the perceived causes leading to task-failure in resistance-exercises
title_fullStr An analysis of the perceived causes leading to task-failure in resistance-exercises
title_full_unstemmed An analysis of the perceived causes leading to task-failure in resistance-exercises
title_short An analysis of the perceived causes leading to task-failure in resistance-exercises
title_sort analysis of the perceived causes leading to task-failure in resistance-exercises
topic Kinesiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391967/
https://www.ncbi.nlm.nih.gov/pubmed/33194334
http://dx.doi.org/10.7717/peerj.9611
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