Load distribution and forearm muscle activity during cylinder grip at various grip strength values
Load distribution and forearm muscle activity during cylinder grip at various grip strength values
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DOI：
10.1016/j.hansur.2021.12.010
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发表时间：
2022-04-30
影响因子：
1.1
通讯作者：
Aoyama, T.
中科院分区：
文献类型：
--
作者：
Mukaiyama, K.;Irie, K.;Aoyama, T.
本研究旨在研究负荷分布和前臂肌肉活动，从强握力到弱握力，使用圆柱形装置（握力传感器）。我们邀请了15名学生，并测量了25%、50%、75%和100%最大自主力（MVF）握力任务时的压力分布和前臂肌肉活动。来自握力传感器的压力数据被分配到七个解剖区域；计算七个区域的数据之和（总力）和每个握持任务的比例负载分布。肌电记录桡侧腕长伸肌（ECRL）、桡侧腕屈肌（FCR）、尺侧腕伸肌（ECU）和尺侧腕屈肌（FCU）的活动。前臂肌肉活力随握力的增加而显著增加（p < 0.05）。拇指所对应的载荷比例随强度的增加变化不显著。另一方面，随着强度的增加，指尖比例显著降低，手掌比例显著升高（p < 0.05）。握力传感器显示，随着握力的增加，手上的负荷分布从指尖转移到手掌。这一结果表明，对手部功能进行更详细的评估是可能的。(c) 2022 sfcm。Elsevier Masson SAS出版。这是一篇基于CC BY-NC-ND许可（http://creativecommons.org/licenses/by-nc-nd/4.0/）的开放获取文章。
This study aimed to investigate load distribution and forearm muscle activity from strong to weak grip strength, using a cylindrical device (Grip Sensor). We invited 15 students and measured the pressure distribution and forearm muscle activity during grip tasks at 25%, 50%, 75%, and 100% maximum voluntary force (MVF). Pressure data from the Grip Sensor were assigned to seven anatomical regions; the sum of the data from the seven regions (Total force) and proportionate load distribution for each grip task were calculated. Electromyography recorded activity in the extensor carpi radialis longus (ECRL), flexor carpi radialis (FCR), extensor carpi ulnaris (ECU) and flexor carpi ulnaris (FCU) muscles. Forearm muscle activity increased significantly with grip strength (p < 0.05). The load proportion corresponding to the thumb did not significantly change with increasing strength. On the other hand, the fingertip ratio significantly decreased, and the palm ratio significantly increased with increasing strength (p < 0.05). The Grip Sensor showed a shift in the load distribution in the hand from fingertips to palm as grip strength increased. This result indicates that more detailed evaluations of hand function may be possible. (C) 2022 SFCM. Published by Elsevier Masson SAS. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).