Neuromuscular fatigability during repeated sprints assessed with an innovative cycle ergometer

Purpose 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. Methods On an innovative cycle ergometer, 16...

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Bibliographic Details
Published in:European journal of applied physiology 2022-05, Vol.122 (5), p.1189-1204
Main Authors: Di Domenico, H., Beaume, J. B., Peyrard, A., Samozino, P., Bowen, M., Hintzy, F., Millet, G. P., Hayes, M., Lapole, T., Rupp, Thomas
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Electromyography
Ergometry
Etiology
Exercise - physiology
Human Physiology
Humans
Isometric
Isometric Contraction
Laboratories
Male
Muscle Fatigue - physiology
Occupational Medicine/Industrial Medicine
Original Article
Physiology
Quadriceps muscle
Sports Medicine
Transcranial magnetic stimulation
Variance analysis
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Summary:Purpose 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. Methods 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 TF ). Individual data were extrapolated at 20, 40, 60, and 80% TS TF . Results Participants completed 9.7 ± 4.2 sprints before reaching a 30% decrease in Pmean. Post-sprint IMVCs were decreased from pre to 60% TS TF and then plateaued (pre: 345 ± 56 N, 60% 247 ± 55 N, TF: 233 ± 57 N, p  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-021-04871-6