Occupational Therapy Department, Rush University Medical Center, 600 South Paulina, Suite 1011, Chicago, IL 60612, USA.
Am J Occup Ther. 2010 Jan-Feb;64(1):95-104. doi: 10.5014/ajot.64.1.95.
We investigated motor control and muscle activation when reaching for and grasping objects with a reacher compared with the unaided hand.
In a repeated-measures counterbalanced design, 41 healthy participants with no previous experience using a reacher were randomly assigned to a sequence of four conditions. Movements of the wrist and fingers were recorded using a three-dimensional Qualisys camera system for assessing reach and grasp. Muscle activations from finger and arm flexors and extensors were recorded by surface electromyography.
Participants exhibited a smaller grasp aperture, longer reaching time, and more muscle activity when they used a reacher.
Efficient motor control, which requires both time and practice, is needed to successfully use a reacher. Clients presented with reachers without sufficient time to develop motor skills unique to reacher use may be more likely to abandon this assistive device and fail to benefit from its function.
与徒手相比，研究使用助行器进行伸手取物和抓握时的运动控制和肌肉激活情况。
在一项重复测量的平衡设计中，41 名从未使用过助行器的健康参与者被随机分配到四个条件的序列中。使用三维 Qualisys 摄像机系统记录腕部和手指的运动，以评估伸手和抓握的情况。使用表面肌电图记录手指和手臂屈肌和伸肌的肌肉激活情况。
参与者使用助行器时，抓握开口较小，伸手时间较长，肌肉活动增加。
成功使用助行器需要高效的运动控制，这既需要时间也需要练习。如果患者没有足够的时间来发展使用助行器特有的运动技能，可能更倾向于放弃这种辅助设备，无法从中受益。
