Fujii Taiga, Ohno Naoki, Sawazaki Takuto, Ogura Kohei, Miyati Tosiaki, Sugama Junko
Graduate School of Frontier Science Initiative, Kanazawa University, Kanazawa, Japan.
Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.
Jpn J Nurs Sci. 2021 Jan 20;18(3):e12407. doi: 10.1111/jjns.12407.
To date no age-comparative study has been reported about effect of exercise on muscle pump action change, while its effect is suggested to differ in ages. This study aims to clarify the changes in muscle pump action with aging by measuring the muscle and vein area, and blood flow in lower legs.
Subjects were healthy volunteers and consisted of three groups: young age group (N = 20), middle age group (N = 20) and old age group (N = 16). The lower leg flexor muscle area and popliteal vein area were measured by using T1-weighed magnetic resonance imaging at the condition pre- and post-ankle exercise in three positions. Moreover, popliteal blood flow velocity was also measured using phase contrast magnetic resonance imaging.
The elderly had the highest number of individuals who had exercise habits (p < .001). In a multiple linear regression analysis, sitting posture, leg muscle volume, and rate of change in the soleus muscle were significantly related to blood flow velocity change.
No difference was found in the changes in muscle pump action with age. The study results suggested that elderly people with exercise habits might be able to maintain the muscle pump action.
迄今为止，尚无关于运动对肌肉泵作用变化影响的年龄比较研究报道，尽管其影响可能因年龄而异。本研究旨在通过测量小腿肌肉和静脉面积以及血流量，阐明随着年龄增长肌肉泵作用的变化。
受试者为健康志愿者，分为三组：青年组（N = 20）、中年组（N = 20）和老年组（N = 16）。在三个位置的踝关节运动前后，使用T1加权磁共振成像测量小腿屈肌面积和腘静脉面积。此外，还使用相位对比磁共振成像测量腘静脉血流速度。
老年人中有运动习惯的人数最多（p <.001）。在多元线性回归分析中，坐姿、腿部肌肉体积和比目鱼肌变化率与血流速度变化显著相关。
未发现肌肉泵作用随年龄变化存在差异。研究结果表明，有运动习惯的老年人可能能够维持肌肉泵作用。
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