elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Side-to-side differences in bone strength in master jumpers and sprinters

Ireland, Alex and Korhonen, Marko and Heinonen, Ari and Suominen, Harri and Baur, Chris and Stevens, Sarah and Degens, Hans and Rittweger, Jörn (2011) Side-to-side differences in bone strength in master jumpers and sprinters. Journal of Musculoskeletal and Neuronal Interactions, 11 (4), pp. 298-305. ISSN 1108-7161.

[img] PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
126kB

Abstract

Introduction: This study evaluated side-to-side difference in tibial bone structure, calf muscle cross-sectional area (CSA) and hopping force in master athletes as a result of training for sports with different magnitudes of inter-leg loading difference. Methods: Tibial bone parameters (at 4%, 14%, 38% and 66% tibial length proximal to distal end), muscle CSA (at 66% tibial length) and hopping forces of both legs of 51 master athletes (conditioned jumpers, conditioned triple jumpers, unconditioned jumpers, hurdlers and sprinters) were examined using pQCT. In epiphyseal 4% slice bone CSA (Ar.tot), total BMC (vBMC.tot), trabecular BMC (vBMC.tb) cortical BMC (vBMC.ct), and trabecular BMD (vBMD.tb) were measured. In diaphyseal slices, Ar.tot, vBMC.ct, cortical density (vBMD.ct), cross-sectional moment of inertia (CSMI) and calf muscle CSA (MuscA) were examined. Results: In conditioned jumpers, side-to-side differences in favour of take-off leg were found in 4% slice in vBMC.tb (+4.1%) (P<0.05). A side-to-side difference was found in 66% slice vBMC.ct and CSMI (both P<0.05), with conditioned jumper (+2.8% and 6.6%) and triple jumper (+2.7% and 7.2%) values higher than other groups. Conclusion: The results suggest that regular training in highimpact sports with uneven lower limb loading results in side-to-side differences in skeletal adaptation independent of age and gender, suggesting that high-impact exercise is effective in maintaining bone strength throughout human lifespan.

Document Type:Article
Title:Side-to-side differences in bone strength in master jumpers and sprinters
Authors:
AuthorsInstitution or Email of Authors
Ireland, AlexManchester Metropolitan University
Korhonen, MarkoUniversity of Jyväskyä
Heinonen, AriUniversity of Jyväskyä
Suominen, HarriUniversity of Jyväskyä
Baur, ChrisNovotec Medical
Stevens, SarahManchester Metropolitan University
Degens, HansManchester Metropolitan University
Rittweger, Jörnjoern.rittweger@dlr.de
Date:2011
Journal or Publication Title:Journal of Musculoskeletal and Neuronal Interactions
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:11
Page Range:pp. 298-305
ISSN:1108-7161
Status:Published
Keywords:Ageing, Exercise, Loading, pQCT
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Integrative Studien (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Jörn Rittweger
Deposited On:06 Dec 2011 12:23
Last Modified:07 Feb 2013 19:27

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.