Neuromuscular fatigability during repeated sprints assessed with an innovative cycle ergometer.

Details

Serval ID
serval:BIB_307A84AB842C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Neuromuscular fatigability during repeated sprints assessed with an innovative cycle ergometer.
Journal
European journal of applied physiology
Author(s)
Di Domenico H., Beaume J.B., Peyrard A., Samozino P., Bowen M., Hintzy F., Millet G.P., Hayes M., Lapole T., Rupp T.
ISSN
1439-6327 (Electronic)
ISSN-L
1439-6319
Publication state
Published
Issued date
05/2022
Peer-reviewed
Oui
Volume
122
Number
5
Pages
1189-1204
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Repeated sprint ability is an integral component of team sports. This study aimed to evaluate fatigability development and its aetiology during and immediately after a cycle repeated sprint exercise performed until a given fatigability threshold.
On an innovative cycle ergometer, 16 healthy males completed an RSE (10-s sprint/28-s recovery) until task failure (TF): a 30% decrease in sprint mean power (Pmean). Isometric maximum voluntary contraction of the quadriceps (IMVC), central alterations [voluntary activation (VA)], and peripheral alterations [twitch (Pt)] were evaluated before (pre), immediately after each sprint (post), at TF and 3 min after. Sprints were expressed as a percentage of the total number of sprints to TF (TS <sub>TF</sub> ). Individual data were extrapolated at 20, 40, 60, and 80% TS <sub>TF</sub> .
Participants completed 9.7 ± 4.2 sprints before reaching a 30% decrease in Pmean. Post-sprint IMVCs were decreased from pre to 60% TS <sub>TF</sub> and then plateaued (pre: 345 ± 56 N, 60% 247 ± 55 N, TF: 233 ± 57 N, p < 0.001). Pt decreased from 20% and plateaued after 40% TS <sub>TF</sub> (p < 0.001, pre-TF = - 45 ± 13%). VA was not significantly affected by repeated sprints until 60% TS <sub>TF</sub> (pre-TF = - 6.5 ± 8.2%, p = 0.036). Unlike peripheral parameters, VA recovered within 3 min (p = 0.042).
During an RSE, Pmean and IMVC decreases were first concomitant to peripheral alterations up to 40% TS <sub>TF</sub> and central alterations was only observed in the second part of the test, while peripheral alterations plateaued. The distinct recovery kinetics in central versus peripheral components of fatigability further confirm the necessity to reduce traditional delays in neuromuscular fatigue assessment post-exercise.
Keywords
Electromyography, Ergometry, Exercise/physiology, Humans, Isometric Contraction, Male, Muscle Fatigue/physiology, Central alterations, Intermittent exhaustive exercise, Peripheral alterations, Peripheral nerve stimulation, Transcranial magnetic stimulation
Pubmed
Web of science
Open Access
Yes
Create date
07/03/2022 12:42
Last modification date
27/04/2022 6:36
Usage data