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

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

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Kurzfassung

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.

Dokumentart:Zeitschriftenbeitrag
Titel:Skeletal muscle remodeling in response to alpine skiing training in older individuals
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
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
Datum:2011
Erschienen in:Scandinavian Journal of Medicine & Science in Sport
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:21
Seitenbereich:Seiten 23-28
ISSN:0905-7188
Status:veröffentlicht
Stichwörter:skeletal muscle, human, training, muscle architecture, muscle hypertrophy, focal adhesion kinase, costamere
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W FR - Forschung unter Weltraumbedingungen (alt)
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W FR - Forschung unter Weltraumbedingungen
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Integrative Studien (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Weltraumphysiologie
Hinterlegt von: Jörn Rittweger
Hinterlegt am:09 Sep 2011 09:15
Letzte Änderung:12 Dez 2013 21:20

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