Ikezoe Tome
Human Health Sciences, Graduate School of Medicine, Kyoto University.
Phys Ther Res. 2020 Dec 4;23(2):99-105. doi: 10.1298/ptr.R0009. eCollection 2020.
In older adults, muscle weakness contributes greatly to functional restrictions on daily living activities, increased risk of falls, and adverse physiological changes. It has been suggested that not only muscle mass but also muscular infiltration of noncontractile elements may influence muscular performance such as strength and rapid force production. It is proved that resistance training may provoke substantial increases in muscle size even if it is performed at low intensities in older individuals. Also, recent studies have demonstrated the effectiveness of resistance training on muscle quality such as muscular infiltration of noncontractile elements for older people. This review shows the age-related changes in muscle mass and muscle quality, which were measured by muscle echo intensity on ultrasound images, and low-intensity resistance training effects on muscle volume and muscle quality.
在老年人中，肌肉无力极大地导致了日常生活活动的功能受限、跌倒风险增加以及不良的生理变化。有人提出，不仅肌肉质量，而且非收缩性成分的肌肉浸润也可能影响肌肉性能，如力量和快速力量产生。事实证明，即使在老年人中以低强度进行抗阻训练，也可能会使肌肉大小大幅增加。此外，最近的研究表明了抗阻训练对老年人肌肉质量（如非收缩性成分的肌肉浸润）的有效性。本综述展示了通过超声图像上的肌肉回声强度测量的与年龄相关的肌肉质量和肌肉质量变化，以及低强度抗阻训练对肌肉体积和肌肉质量的影响。
