Electrically induced quadriceps fatigue in the contralateral leg impairs ipsilateral knee extensors performance.
central command
electrical stimulation
group III and IV afferents
muscle fatigue
Journal
American journal of physiology. Regulatory, integrative and comparative physiology
ISSN: 1522-1490
Titre abrégé: Am J Physiol Regul Integr Comp Physiol
Pays: United States
ID NLM: 100901230
Informations de publication
Date de publication:
01 05 2021
01 05 2021
Historique:
pubmed:
18
3
2021
medline:
30
7
2021
entrez:
17
3
2021
Statut:
ppublish
Résumé
Muscle fatigue induced by voluntary exercise, which requires central motor drive, causes central fatigue that impairs endurance performance of a different, nonfatigued muscle. This study investigated the impact of quadriceps fatigue induced by electrically induced (no central motor drive) contractions on single-leg knee-extension (KE) performance of the subsequently exercising ipsilateral quadriceps. On two separate occasions, eight males completed constant-load (85% of maximal power-output) KE exercise to exhaustion. In a counterbalanced manner, subjects performed the KE exercise with no pre-existing quadriceps fatigue in the contralateral leg on one day (No-PreF), whereas on the other day, the same KE exercise was repeated following electrically induced quadriceps fatigue in the contralateral leg (PreF). Quadriceps fatigue was assessed by evaluating pre- to postexercise changes in potentiated twitch force (ΔQ
Identifiants
pubmed: 33729017
doi: 10.1152/ajpregu.00363.2020
pmc: PMC8163605
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
R747-R756Subventions
Organisme : NHLBI NIH HHS
ID : R01 HL116579
Pays : United States
Organisme : HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
ID : HL-139451
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