Selective training-induced thigh muscles hypertrophy in professional road cyclists
| Autor: | David Bendahan, Patrick J. Cozzone, Laurent Grélot, Yann Le Fur, François Hug, Tanguy Marqueste |
|---|---|
| Přispěvatelé: | Laboratoire des Déterminants Physiologiques de l'Activité Physique, Université de la Méditerranée - Aix-Marseille 2-Centre National de la Recherche Scientifique (CNRS), Centre de résonance magnétique biologique et médicale (CRMBM), Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Male
Sports medicine Physiology MESH: Physical Fitness Thigh Biceps Muscle hypertrophy MESH: Magnetic Resonance Imaging 0302 clinical medicine Orthopedics and Sports Medicine MESH: Human Engineering education.field_of_study MESH: Muscle Skeletal MESH: Hypertrophy General Medicine Magnetic Resonance Imaging medicine.anatomical_structure [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC] Adult medicine.medical_specialty Population MESH: Bicycling 03 medical and health sciences Physiology (medical) medicine Humans Exercise physiology education Muscle Skeletal Exercise MESH: Humans business.industry Public Health Environmental and Occupational Health Thigh muscle Skeletal muscle MESH: Adult 030229 sport sciences Hypertrophy MESH: Male Bicycling body regions Physical Fitness MESH: Exercise Physical therapy Exercise Test Ergonomics business MESH: Exercise Test human activities 030217 neurology & neurosurgery MESH: Thigh |
| Zdroj: | Arbeitsphysiologie Arbeitsphysiologie, Berlin ; Göttingen ; Heidelberg : Springer, 2006, 97 (5), pp.591-7. ⟨10.1007/s00421-006-0218-5⟩ Arbeitsphysiologie, 2006, 97 (5), pp.591-7. ⟨10.1007/s00421-006-0218-5⟩ |
| ISSN: | 0365-0863 |
| DOI: | 10.1007/s00421-006-0218-5⟩ |
| Popis: | Muscular adaptations linked to a high volume and intensity of training have been scarcely reported. We aimed at documenting, using MRI, the cross-sectional area changes associated with a high volume and intensity of training in 11 thigh muscles of a population of professional road cyclists as compared with sport science students. We were also interested in determining, whether selective muscle hypertrophy in professional road cyclists, if any, was correlated to selective exercise-induced T (2) changes during a pedaling exercise on a cycloergometer. Cross-sectional area of 11 thigh muscles was quantified in sixteen subjects (i.e. eight professional road cyclists and eight sport science students) using MRI. In addition, transverse relaxation times (T (2)) were measured before and just after a maximal standardized constant-load exercise in order to investigate exercise-related T (2) changes in these muscles. Professional road cyclists had a significantly higher relative amount of muscle (including the whole set of thigh muscles, 90.5+/-3.3%) as compared to controls (81.6+/-7.3%). Regarding relative values expressed with respect to the total thigh muscles CSA, Vastus lateralis and Biceps femoris CSA were significantly larger in cyclists whereas CSA of the Vastus intermedius was smaller. However, this selective hypertrophy was not correlated to the exercise-induced T (2)-increase. We have reported, for the first time, a selective hypertrophy of Vastus lateralis and Biceps femoris in professional road cyclists confirming their involvement in pedaling task and suggesting a possible cause-effect relationship between muscle activation and hypertrophy, associated with a specific pedaling skill. |
| Databáze: | OpenAIRE |
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