AustralieFrV1, Main, Exploration, bibRecord, 001A80

Muscle coordination during breaststroke swimming: Comparison between elite swimmers and beginners.

Identifieur interne : 001A80 ( Main/Exploration ); précédent : 001A79; suivant : 001A81

Muscle coordination during breaststroke swimming: Comparison between elite swimmers and beginners.

Auteurs : João R. Vaz [Portugal] ; Bj Rn Harald Olstad [Norvège] ; Jan Cabri [Norvège] ; Per-Ludvik Kjendlie [Norvège] ; Pedro Pezarat-Correia [Portugal] ; François Hug [France]

Source :

Journal of sports sciences [ 1466-447X ] ; 2016.

RBID : pubmed:26878097

Descripteurs français

KwdFr :
- Adolescent, Adulte, Aptitudes motrices, Athlètes, Bras, Enfant, Femelle, Humains, Jambe, Jeune adulte, Muscles squelettiques, Mâle, Natation, Performance sportive, Phénomènes biomécaniques, Phénomènes physiologiques du système locomoteur, Électromyographie.
MESH :
- Adolescent, Adulte, Aptitudes motrices, Athlètes, Bras, Enfant, Femelle, Humains, Jambe, Jeune adulte, Muscles squelettiques, Mâle, Natation, Performance sportive, Phénomènes biomécaniques, Phénomènes physiologiques du système locomoteur, Électromyographie.

English descriptors

KwdEn :
- Adolescent, Adult, Arm, Athletes, Athletic Performance, Biomechanical Phenomena, Child, Electromyography, Female, Humans, Leg, Male, Motor Skills, Muscle, Skeletal, Musculoskeletal Physiological Phenomena, Swimming, Young Adult.
MESH :
- Adolescent, Adult, Arm, Athletes, Athletic Performance, Biomechanical Phenomena, Child, Electromyography, Female, Humans, Leg, Male, Motor Skills, Muscle, Skeletal, Musculoskeletal Physiological Phenomena, Swimming, Young Adult.

Abstract

The present study aimed to compare muscle coordination strategies of the upper and lower limb muscles between beginners and elite breaststroke swimmers. Surface electromyography (EMG) of eight muscles was recorded in 16 swimmers (8 elite, 8 beginners) during a 25 m swimming breaststroke at 100% of maximal effort. A decomposition algorithm was used to identify the muscle synergies that represent the temporal and spatial organisation of muscle coordination. Between-groups indices of similarity and lag times were calculated. Individual muscle patterns were moderately to highly similar between groups (between-group indices range: 0.61 to 0.84). Significant differences were found in terms of lag time for pectoralis major (P < 0.05), biceps brachii, rectus femoris and tibialis anterior (P < 0.01), indicating an earlier activation for these muscles in beginners compared to elites (range: -13.2 to -3.8% of the swimming cycle). Three muscle synergies were identified for both beginners and elites. Although their composition was similar between populations, the third synergy exhibited a high within-group variability. Moderate to high indices of similarity were found for the shape of synergy activation coefficients (range: 0.63 to 0.88) but there was a significant backward shift (-8.4% of the swimming cycle) in synergy #2 for beginners compared to elites. This time shift suggested differences in the global arm-to-leg coordination. These results indicate that the synergistic organisation of muscle coordination during breaststroke swimming is not profoundly affected by expertise. However, specific timing adjustments were observed between lower and upper limbs.

DOI: 10.1080/02640414.2016.1143109
PubMed: 26878097

Affiliations:

France, Norvège, Portugal

Le document en format XML

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<author><name sortKey="Vaz, Joao R" sort="Vaz, Joao R" uniqKey="Vaz J" first="João R" last="Vaz">João R. Vaz</name>
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<term>Biomechanical Phenomena</term>
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<term>Athlètes</term>
<term>Bras</term>
<term>Enfant</term>
<term>Femelle</term>
<term>Humains</term>
<term>Jambe</term>
<term>Jeune adulte</term>
<term>Muscles squelettiques</term>
<term>Mâle</term>
<term>Natation</term>
<term>Performance sportive</term>
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<term>Adult</term>
<term>Arm</term>
<term>Athletes</term>
<term>Athletic Performance</term>
<term>Biomechanical Phenomena</term>
<term>Child</term>
<term>Electromyography</term>
<term>Female</term>
<term>Humans</term>
<term>Leg</term>
<term>Male</term>
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<term>Musculoskeletal Physiological Phenomena</term>
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<term>Adulte</term>
<term>Aptitudes motrices</term>
<term>Athlètes</term>
<term>Bras</term>
<term>Enfant</term>
<term>Femelle</term>
<term>Humains</term>
<term>Jambe</term>
<term>Jeune adulte</term>
<term>Muscles squelettiques</term>
<term>Mâle</term>
<term>Natation</term>
<term>Performance sportive</term>
<term>Phénomènes biomécaniques</term>
<term>Phénomènes physiologiques du système locomoteur</term>
<term>Électromyographie</term>
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<front><div type="abstract" xml:lang="en">The present study aimed to compare muscle coordination strategies of the upper and lower limb muscles between beginners and elite breaststroke swimmers. Surface electromyography (EMG) of eight muscles was recorded in 16 swimmers (8 elite, 8 beginners) during a 25 m swimming breaststroke at 100% of maximal effort. A decomposition algorithm was used to identify the muscle synergies that represent the temporal and spatial organisation of muscle coordination. Between-groups indices of similarity and lag times were calculated. Individual muscle patterns were moderately to highly similar between groups (between-group indices range: 0.61 to 0.84). Significant differences were found in terms of lag time for pectoralis major (P < 0.05), biceps brachii, rectus femoris and tibialis anterior (P < 0.01), indicating an earlier activation for these muscles in beginners compared to elites (range: -13.2 to -3.8% of the swimming cycle). Three muscle synergies were identified for both beginners and elites. Although their composition was similar between populations, the third synergy exhibited a high within-group variability. Moderate to high indices of similarity were found for the shape of synergy activation coefficients (range: 0.63 to 0.88) but there was a significant backward shift (-8.4% of the swimming cycle) in synergy #2 for beginners compared to elites. This time shift suggested differences in the global arm-to-leg coordination. These results indicate that the synergistic organisation of muscle coordination during breaststroke swimming is not profoundly affected by expertise. However, specific timing adjustments were observed between lower and upper limbs.</div>
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<name sortKey="Pezarat Correia, Pedro" sort="Pezarat Correia, Pedro" uniqKey="Pezarat Correia P" first="Pedro" last="Pezarat-Correia">Pedro Pezarat-Correia</name>
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Serveur d'exploration sur les relations entre la France et l'Australie

Muscle coordination during breaststroke swimming: Comparison between elite swimmers and beginners.

Muscle coordination during breaststroke swimming: Comparison between elite swimmers and beginners.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur les relations entre la France et l'Australie
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