Han Seong-Won, Lee Dae-Yeon, Choi Dong-Sung, Han Boram, Kim Jin-Sun, Lee Hae-Dong
J Aging Phys Act. 2017 Apr;25(2):287-294. doi: 10.1123/japa.2016-0149. Epub 2016 Oct 21.
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.
本研究旨在探讨在老年人进行为期8周的全身振动（WBV）训练后，肌肉-肌腱复合体中的肌肉力量和肌腱刚度是否会同步改变。40名65岁及以上的老年女性被随机分为对照组（CON，n = 15）和全身振动（WBV）训练组（暴露时间组，n = 13；振动强度组，n = 12）。对于训练组，在训练期后进行了为期4周的停训期。在整个训练/停训期间，使用测力计和超声检查的组合系统对腓肠肌内侧（MG）肌肉力量和跟腱刚度进行了四次评估（0、4、8和12周）。虽然在整个训练期间肌肉力量逐渐增加（p < .05），但在8周后观察到肌腱刚度显著增加（p < .05）。这些发现表明，在WBV训练的早期阶段，肌肉力量和肌腱刚度异步变化，这可能是导致肌肉肌腱损伤的一个因素。
