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Neuromuscular fatigability during repeated sprints assessed with an innovative cycle ergometer.
Di Domenico, H; Beaume, J B; Peyrard, A; Samozino, P; Bowen, M; Hintzy, F; Millet, G P; Hayes, M; Lapole, T; Rupp, Thomas.
Afiliación
  • Di Domenico H; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Beaume JB; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Peyrard A; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Samozino P; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Bowen M; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Hintzy F; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France.
  • Millet GP; Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland.
  • Hayes M; Environmental Extremes Laboratory, School of Sport and Health Sciences, University of Brighton, Eastbourne, UK.
  • Lapole T; Inter-University Laboratory of Human Movement Sciences, Univ Lyon, UJM-Saint-Etienne, EA 7424, 42023, Saint-Étienne, France.
  • Rupp T; Inter-University Laboratory of Human Movement Sciences, Univ Savoie Mont-Blanc, EA 7424, Chambéry, France. thomas.rupp@univ-smb.fr.
Eur J Appl Physiol ; 122(5): 1189-1204, 2022 May.
Article en En | MEDLINE | ID: mdl-35212845
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 (TSTF). Individual data were extrapolated at 20, 40, 60, and 80% TSTF. RESULTS: Participants completed 9.7 ± 4.2 sprints before reaching a 30% decrease in Pmean. Post-sprint IMVCs were decreased from pre to 60% TSTF 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% TSTF (p < 0.001, pre-TF = - 45 ± 13%). VA was not significantly affected by repeated sprints until 60% TSTF (pre-TF = - 6.5 ± 8.2%, p = 0.036). Unlike peripheral parameters, VA recovered within 3 min (p = 0.042). CONCLUSION: During an RSE, Pmean and IMVC decreases were first concomitant to peripheral alterations up to 40% TSTF 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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ergometría / Fatiga Muscular Límite: Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ergometría / Fatiga Muscular Límite: Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania