Do Ji-Hye, Yoo Won-Gyu
Department of Occupational Therapy, Kijeon College, Republic of Korea.
Department of Physical Therapy, College of Healthcare Medical Science and Engineering, Inje University: 607 Obangdong, Gimhae, Gyeongsangnam-do 621-7849, Republic of Korea.
J Phys Ther Sci. 2018 Feb;30(2):291-292. doi: 10.1589/jpts.30.291. Epub 2018 Feb 28.
[Purpose] The purpose of this study was to investigate the effectiveness of using a visual feedback-equipped reacher when performing reach-to-grasp tasks. [Subjects and Methods] Seventeen healthy participants with no illnesses or physical disabilities were selected for this study. Activation of the flexor digitorum superficialis and extensor digitorum muscles was assessed using electromyography. Wrist and shoulder momentums were calculated using a three-axis acceleration sensor. Participants were instructed to move 10 ears of plastic corn from right to left using a reacher with and without visual feedback. [Results] Comparison of muscle activity under the two conditions revealed a statistically significant reduction in the activity of the FDS and ED with feedback compared to without. The three-axis accelerometer values showed that wrist momentum decreased significantly with visual feedback compared to without feedback. [Conclusion] The results showed that using the vision-assisted reacher affected upper limb muscle activation and momentum. It is important that assistive devices be developed for effective energy use. Here, providing visual feedback during reacher use was shown to reduce users' physical fatigue.
[目的] 本研究旨在探讨使用配备视觉反馈的上肢伸展辅助器进行抓握动作时的有效性。[对象与方法] 本研究选取了17名无疾病或身体残疾的健康参与者。使用肌电图评估指浅屈肌和指伸肌的激活情况。使用三轴加速度传感器计算手腕和肩部的动量。参与者被要求使用带视觉反馈和不带视觉反馈的上肢伸展辅助器将10个塑料玉米穗从右向左移动。[结果] 两种条件下肌肉活动的比较显示，与无反馈相比，有反馈时指浅屈肌和指伸肌的活动在统计学上显著降低。三轴加速度计值显示，与无反馈相比，有视觉反馈时手腕动量显著降低。[结论] 结果表明，使用视觉辅助上肢伸展辅助器会影响上肢肌肉激活和动量。开发有效的能量使用辅助设备很重要。在此，研究表明在上肢伸展辅助器使用过程中提供视觉反馈可减轻使用者的身体疲劳。
