Science and Research Centre Koper, Institute for Kinesiology Research, Slovenia.
Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany.
J Gerontol A Biol Sci Med Sci. 2018 Nov 10;73(12):1602-1608. doi: 10.1093/gerona/gly069.
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; NMALES = 133; NFEMALES = 246), and power (age = 56.9 ± 13.5 years; NMALES = 100; NFEMALES = 78) and endurance master athletes (age = 56.5 ± 14.5 years; NMALES = 76; NFEMALES = 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.
尽管大师级运动员保持着高水平的身体活动，但他们也会随着年龄的增长而出现骨骼肌功能下降的情况。有迹象表明，肌肉之间的衰老和身体活动不足引起的肌肉萎缩不成比例。张肌描记术是一种非侵入性工具，已被用于研究各种运动对不同骨骼肌收缩时间（Tc）的影响。本横断面研究旨在评估年龄对非运动员（年龄=62.1±12.7 岁；NMALES=133；NFEMALES=246）和力量（年龄=56.9±13.5 岁；NMALES=100；NFEMALES=78）和耐力大师级运动员（年龄=56.5±14.5 岁；NMALES=76；NFEMALES=73）股外侧肌、腓肠肌内侧和股二头肌 Tc 的影响。我们发现所有肌肉都与年龄相关的变慢，无论运动类型如何，耐力大师级运动员的 Tc 最长，力量大师级运动员的 Tc 最短。与非运动员相比，耐力大师级运动员的 Tc 更长，这表明经常进行耐力运动活动会加剧衰老过程中骨骼肌的减速。
