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Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance

We recently developed a high intensity one leg dynamic exercise (OLDE) protocol to measure muscle endurance and investigate the central and peripheral mechanisms of muscle fatigue. The aims of the present study were to establish the reliability of this novel protocol and describe the isokinetic musc...

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Autores principales: Pageaux, Benjamin, Lepers, Romuald, Marcora, Samuele M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5051904/
https://www.ncbi.nlm.nih.gov/pubmed/27706196
http://dx.doi.org/10.1371/journal.pone.0163979
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author Pageaux, Benjamin
Lepers, Romuald
Marcora, Samuele M.
author_facet Pageaux, Benjamin
Lepers, Romuald
Marcora, Samuele M.
author_sort Pageaux, Benjamin
collection PubMed
description We recently developed a high intensity one leg dynamic exercise (OLDE) protocol to measure muscle endurance and investigate the central and peripheral mechanisms of muscle fatigue. The aims of the present study were to establish the reliability of this novel protocol and describe the isokinetic muscle fatigue induced by high intensity OLDE and its recovery. Eight subjects performed the OLDE protocol (time to exhaustion test of the right leg at 85% of peak power output) three times over a week period. Isokinetic maximal voluntary contraction torque at 60 (MVC(60)), 100 (MVC(100)) and 140 (MVC(140)) deg/s was measured pre-exercise, shortly after exhaustion (13 ± 4 s), 20 s (P20) and 40 s (P40) post-exercise. Electromyographic (EMG) signal was analyzed via the root mean square (RMS) for all three superficial knee extensors. Mean time to exhaustion was 5.96 ± 1.40 min, coefficient of variation was 8.42 ± 6.24%, typical error of measurement was 0.30 min and intraclass correlation was 0.795. MVC torque decreased shortly after exhaustion for all angular velocities (all P < 0.001). MVC(60) and MVC(100) recovered between P20 (P < 0.05) and exhaustion and then plateaued. MVC(140) recovered only at P40 (P < 0.05). High intensity OLDE did not alter maximal EMG RMS of the three superficial knee extensors during MVC. The results of this study demonstrate that this novel high intensity OLDE protocol could be reliably used to measure muscle endurance, and that muscle fatigue induced by high intensity OLDE should be examined within ~ 30 s following exhaustion.
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spelling pubmed-50519042016-10-27 Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance Pageaux, Benjamin Lepers, Romuald Marcora, Samuele M. PLoS One Research Article We recently developed a high intensity one leg dynamic exercise (OLDE) protocol to measure muscle endurance and investigate the central and peripheral mechanisms of muscle fatigue. The aims of the present study were to establish the reliability of this novel protocol and describe the isokinetic muscle fatigue induced by high intensity OLDE and its recovery. Eight subjects performed the OLDE protocol (time to exhaustion test of the right leg at 85% of peak power output) three times over a week period. Isokinetic maximal voluntary contraction torque at 60 (MVC(60)), 100 (MVC(100)) and 140 (MVC(140)) deg/s was measured pre-exercise, shortly after exhaustion (13 ± 4 s), 20 s (P20) and 40 s (P40) post-exercise. Electromyographic (EMG) signal was analyzed via the root mean square (RMS) for all three superficial knee extensors. Mean time to exhaustion was 5.96 ± 1.40 min, coefficient of variation was 8.42 ± 6.24%, typical error of measurement was 0.30 min and intraclass correlation was 0.795. MVC torque decreased shortly after exhaustion for all angular velocities (all P < 0.001). MVC(60) and MVC(100) recovered between P20 (P < 0.05) and exhaustion and then plateaued. MVC(140) recovered only at P40 (P < 0.05). High intensity OLDE did not alter maximal EMG RMS of the three superficial knee extensors during MVC. The results of this study demonstrate that this novel high intensity OLDE protocol could be reliably used to measure muscle endurance, and that muscle fatigue induced by high intensity OLDE should be examined within ~ 30 s following exhaustion. Public Library of Science 2016-10-05 /pmc/articles/PMC5051904/ /pubmed/27706196 http://dx.doi.org/10.1371/journal.pone.0163979 Text en © 2016 Pageaux et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Pageaux, Benjamin
Lepers, Romuald
Marcora, Samuele M.
Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title_full Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title_fullStr Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title_full_unstemmed Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title_short Reliability of a Novel High Intensity One Leg Dynamic Exercise Protocol to Measure Muscle Endurance
title_sort reliability of a novel high intensity one leg dynamic exercise protocol to measure muscle endurance
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5051904/
https://www.ncbi.nlm.nih.gov/pubmed/27706196
http://dx.doi.org/10.1371/journal.pone.0163979
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