Étiologie et cinétique d'apparition de la fatigue neuromusculaire lors d'exercices prolongés de cyclisme (notice n° 1009262)
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| control field | 20250125140236.0 |
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| Language code of text/sound track or separate title | fre |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 100 10 - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Lepers, Romuald |
| Relator term | author |
| 245 00 - TITLE STATEMENT | |
| Title | Étiologie et cinétique d'apparition de la fatigue neuromusculaire lors d'exercices prolongés de cyclisme |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2004.<br/> |
| 500 ## - GENERAL NOTE | |
| General note | 24 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | RÉSUMÉDe nombreuses études ont mis en évidence une altération de la fonction neuromusculaire consécutivement à des exercices de cyclisme de longue durée (de 30 min à plusieurs heures). La fatigue musculaire au cours de ce type d’exercices, pouvant se traduire par une réduction de la puissance maximale produite lors d’efforts intenses de type sprints, est généralement quantifiée par la perte de force maximale volontaire au niveau des muscles extenseurs du genou. Les techniques de stimulation nerveuse percutanée appliquée au niveau du nerf fémoral permettent d’identifier les facteurs périphériques (onde M, couplage excitationcontraction, contractilité) et centraux (niveau d’activation) responsables de la fatigue musculaire. Les mécanismes centraux de la fatigue, d’origines spinaux et/ou supra-spinaux, semblent intervenir plus tardivement que les phénomènes périphériques lorsque l’exercice de cyclisme se prolonge plusieurs heures. De façon intéressante, des études récentes tendent à montrer que les altérations neuromusculaires occasionnées par l’exercice ne semblent pas dépendre de la fréquence de pédalage utilisée. De plus, il semble que sous l’effet de la fatigue, le patron de pédalage reste stable au cours d’exercices sous-maximaux tant que ceux-ci ne sont pas prolongés jusqu’à épuisement. Les mécanismes, tels que les changements de coordinations musculaires, permettant au cycliste de maintenir un niveau d’intensité identique durant plusieurs heures sans dégradation du patron locomoteur demandent encore a être explorés. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Aetiology and time course of neuromuscular fatigue during prolonged cycling exercises ABSTRACT Numerous studies have shown an alteration of neuromuscular function following prolonged cycling exercises (from 30 min to several hours). Muscular fatigue during this kind of exercises, evidenced by reduction of maximal power output during intense efforts such as sprint, is generally quantified by the loss of maximal voluntary force of the knee extensor muscles. Techniques of percutaneous stimulation of the femoral nerve allow to identify peripheral (Mwave, excitation-contraction coupling process, contractility) and central (activation level) mechanisms of fatigue. Central fatigue, locating at spinal and/or supraspinal level, seems to occur later than peripheral fatigue when exercise lasts several hours. Interestingly, recent studies tend to show that neuromuscular alterations do not depend on pedalling frequency. In fatigue conditions, pedalling pattern remains stable during sub-maximal exercise if exercise is not performed until exhaustion. Mechanisms such changes in muscular strategies, allowing the cyclist to sustain an identical intensity throughout long-duration exercise without degradation of locomotor pattern need further investigations. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | muscle |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | cyclisme |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | EMG |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | é |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | activation |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | fatigue |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | édalage |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | neurostimulation |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | muscle |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | cycling |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | EMG |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | activation |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | pedalling rate |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | neurostimulation |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Fatigue |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Maffiuletti, Nicola Angelo |
| Relator term | author |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Millet, Guillaume |
| Relator term | author |
| 786 0# - DATA SOURCE ENTRY | |
| Note | Movement & Sport Sciences | 52 | 2 | 2004-06-01 | p. 83-107 | 1378-1863 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://shs.cairn.info/revue-science-et-motricite-2004-2-page-83?lang=fr&redirect-ssocas=7080">https://shs.cairn.info/revue-science-et-motricite-2004-2-page-83?lang=fr&redirect-ssocas=7080</a> |
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