Asynchronous Alterations of Muscle Force and Tendon Stiffness Following 8 Weeks of Resistance Exercise with Whole-Body Vibration in Older Women

作者：Han Seong won; Lee Dae yeon; Choi Dong Sung; Han Boram; Kim Jin Sun; Lee Hae Dong^*

来源：Journal of Aging and Physical Activity, 2017, 25(2): 287-294.

DOI：10.1123/japa.2016-0149

• muscle force
• tendon stiffness
• aging
• whole-body vibration exercise

This study aimed to examine whether muscle force and tendon stiffness in a muscle-tendon complex alter synchronously following 8-week whole-body vibration (WBV) training in older people. Forty older women aged 65 years and older were randomly assigned into control (CON, n = 15) and whole-body vibration (WBV) training groups (exposure time, n = 13; vibration intensity, n = 12). For the training groups, a 4-week detraining period was completed following the training period. Throughout the training/detraining period, force of the medial gastrocnemius (MG) muscle and stiffness of the Achilles tendon were assessed four times (0, 4, 8, and 12 weeks) using a combined system of dynamometer and ultrasonography. While muscle force gradually increased throughout the training period (p <.05), a significant increase in tendon stiffness was observed after 8 weeks (p<.05). These findings indicated that, during the early phase of WBV training, muscle force and tendon stiffness changed asynchronously, which might be a factor in possible musculotendinous injuries.

• 出版日期2017-4