Proximal tibia volumetric bone mineral density is correlated to the magnitude of local acceleration in male long distance runners.

Détails

ID Serval
serval:BIB_59295F3843C0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Proximal tibia volumetric bone mineral density is correlated to the magnitude of local acceleration in male long distance runners.
Périodique
Journal of Applied Physiology
Auteur(s)
Deriaz Olivier, Najafi Bijan, Ballabeni Pierluigi, Crettenand Antoinette, Gobelet Charles, Aminian Kamiar, Rizzoli Rene, Gremion Gerald
ISSN
1522-1601[electronic], 0161-7567[linking]
Statut éditorial
Publié
Date de publication
2010
Peer-reviewed
Oui
Volume
108
Numéro
4
Pages
852-857
Langue
anglais
Résumé
Introduction: The beneficial effect of physical exercise on bone mineral density (BMD) is at least partly explained by the forces exerted directly on the bones. Male runners present generally higher BMD than sedentary individuals. We postulated that the proximal tibia BMD is related to the running distance as well as to the magnitude of the shocks (while running) in male runners. Methods: A prospective study (three yearly measurements) included 81 healthy male subjects: 16 sedentary lean subjects and three groups of runners (5-30 km/week, n=19; 30-50 km/week, n=29; 50-100 km/week, n=17). Several measurements were performed at the proximal tibia level: volumetric BMD (vBMD), cortical index (CI) i.e. an index of cortical bone thickness and peak accelerations (an index of shocks during heel strike) while running (measured by a 3-D accelerometer). A general linear model assessed the prediction of vBMD or CI by a) simple effects (running distance, peak accelerations, time) and b) interactions (for instance if vBMD prediction by peak acceleration depends on running distance). Results: CI and vBMD a) increase with running distance to reach a plateau over 30 km/wk, b) are positively associated with peak accelerations over 30 km/week. Discussion: Running may be associated with high peak accelerations in order to have beneficial effects on BMD. More important strains are needed to be associated with the same increase in BMD during running sessions of short duration than those of long duration. Conclusion: CI and vBMD are associated with the magnitude of the shocks during heel strike in runners. Key words: Bone mineral density, strains, physical exercise, running distance.
Mots-clé
Runners, Physical Exercise, Strains, Cortical Bone, Daily Physical-Activity, Serum Testosterone, Mass, Exercise, Population, Determinants, Metabolism, Turnover, Mileage, People
Pubmed
Web of science
Création de la notice
21/04/2010 10:07
Dernière modification de la notice
20/08/2019 14:12
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