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Skeletal muscle remodeling in response to alpine skiing training in older individuals

Narici, Marco and Flueck, Martin and Koesters, Alexander and Gimpl, Martin and Reifberger, Anna and Seynnes, Olivier and Rittweger, Jörn and Mueller, Erich (2011) Skeletal muscle remodeling in response to alpine skiing training in older individuals. Scandinavian Journal of Medicine & Science in Sport, 21 (Suppl ), pp. 23-28. ISSN 0905-7188.

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This study investigated whether regular alpine skiing could reverse sarcopenia and muscle weakness in older individuals. Twenty-two older men and women (67 ± 2 yr) underwent 12 weeks of recreational skiing, 2-3 times a week, each session lasting ~3.5 hours. An age-matched, inactive group (n = 20, 67 ± 4 yr) served as control (CTRL). Before and after the training period, knee extensors muscle thickness (Tm), pennation angle () and fascicle length (Lf) of the vastus lateralis muscle, were measured by ultrasound. Maximum isokinetic knee extensor torque (MIT) at an angular velocity of 60 deg/s was measured by dynamometry. After the training, Tm increased by 7.1% (P<0.001), Lf by 5.4% (P<0.02) and  by 3.4% (P<0.05). The increase in Tm was matched by a significant gain in MIT (13.3%, P<0.001). No significant changes, except for a decrease in  (2.1%, P<0.02) were found in the CTRL group. The gain in Tm in the training group significantly correlated with an increase in focal adhesion kinase (FAK) content, pointing to a primary role of this mechano-sensitive protein in sarcomere remodeling with muscle hypertrophy. Overall, the results show that alpine skiing is an effective intervention for combating sarcopenia and weakness in old age.

Document Type:Article
Title:Skeletal muscle remodeling in response to alpine skiing training in older individuals
AuthorsInstitution or Email of Authors
Narici, MarcoManchester Metropolitan University, U.K.
Flueck, MartinManchester Metropolitan University, U.K.
Koesters, AlexanderUniversity of Salzburg
Gimpl, MartinUniversity of Salzburg
Reifberger, AnnaUniversity of Salzburg
Seynnes, OlivierManchester Metropoliaton University
Rittweger, Jörnjoern.rittweger@dlr.de
Mueller, ErichUniversity of Salzburg
Journal or Publication Title:Scandinavian Journal of Medicine & Science in Sport
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 23-28
Keywords:skeletal muscle, human, training, muscle architecture, muscle hypertrophy, focal adhesion kinase, costamere
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:09 Sep 2011 09:15
Last Modified:12 Dec 2013 21:20

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