Journal
JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES
Volume 73, Issue 12, Pages 1602-1608Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/gerona/gly069
Keywords
Skeletal muscle; TMG; Contraction time; Master athletes; MHC
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Funding
- Cross-border Cooperation Program Slovenia-Italy 2007-2013
- European Regional Development Fund (PANGEA - Physical Activity and Nutrition for Quality Ageing) [042-2/2009-18/052012]
- Slovenian Research Agency [1000-15-1988, L5-5550]
- Norwegian Financial Mechanism [4300-472/2014]
- Republic of Slovenia Government Office for Development and European Cohesion (A-Qu-A-Active and Quality Ageing in Home Environment) [4300-472/2014]
- Slovenian Sport Foundation (The Effect of Regular Sport Exercise on Muscle Composition in Master Athletes) [RR-14-419]
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Although master athletes maintain high levels of physical activity, they also suffer from an age-related decline in skeletal muscle function. There are indications of disproportional age-and physical inactivity-induced muscle wasting between muscles. Tensiomyography is a noninvasive tool that has been used to study the effects of a variety of sports on the contraction time (Tc) in different skeletal muscles. The aim of this cross-sectional study was to assess age-related changes in the Tc of the vastus lateralis, gastrocnemius medialis, and biceps femoris muscles with Tensiomyography in older nonathletes (age = 62.1 +/- 12.7 years; N-MALES = 133; N-FEMALES = 246), and power (age = 56.9 +/- 13.5 years; N-MALES = 100; N-FEMALES = 78) and endurance master athletes (age = 56.5 +/- 14.5 years; N-MALES = 76; N-FEMALES = 73). We found an age-related slowing in all muscles, irrespective of discipline, where endurance master athletes had the longest and power master athletes had the shortest Tc. The longer Tc in endurance master athletes than in nonathletes suggests that regular endurance sport activity aggravates slowing of skeletal muscles during aging.
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