健康个体在爬楼梯、运动想象和机器人辅助行走过程中四肢四块肌肉的肌电图肌肉激活模式：一项横断面研究。
EMG Muscle Activation Pattern of Four Lower Extremity Muscles during Stair Climbing, Motor Imagery, and Robot-Assisted Stepping: A Cross-Sectional Study in Healthy Individuals.
机构信息
Institute of Physiotherapy, Zurich University of Applied Sciences, Winterthur, Switzerland.
Research Department, Reha Rheinfelden, Rheinfelden, Switzerland.
出版信息
Biomed Res Int. 2019 Mar 25;2019:9351689. doi: 10.1155/2019/9351689. eCollection 2019.
BACKGROUND
Stair climbing can be a challenging part of daily life and a limiting factor for social participation, in particular for patients after stroke. In order to promote motor relearning of stair climbing, different therapeutical measures can be applied such as motor imagery and robot-assisted stepping therapy. Both are common therapy measures and a positive influence on the rehabilitation process has been reported. However, there are contradictory results regarding the neuromuscular effect of motor imagery, and the effect of robot-assisted tilt table stepping on the EMG activation compared to stair climbing itself is not known. Thus, we investigated the EMG activity during (1) a stepping task on the robot-assisted tilt table Erigo, (2) motor imagery of stair climbing, and (3) real stair climbing in healthy individuals for a subsequent study on patients with lower limb motor impairment. The aim was to assess potential amplitude independent changes of the EMG activation as a function of the different conditions.
METHODS
EMG data of four muscles of the dominant leg were recorded in m. rectus femoris, m. biceps femoris, m. tibialis anterior, and m. gastrocnemius medialis. The cross-correlation analysis was performed to measure similarity/dissimilarity of the EMG curves.
RESULTS
The data of the study participants revealed high cross-correlation coefficients comparing the EMG activation modulation of stair climbing and robot-assisted tilt table stepping in three muscles except for the m. gastrocnemius medialis. As the EMG activation amplitude did not differ between motor imagery and the resting phase the according EMG data of the motor imagery condition were not subjected to a further analysis.
CONCLUSION
Robot-assisted tilt table stepping, but rather not motor imagery, evokes a similar activation in certain leg muscles compared to real stair climbing.
背景
爬楼梯可能是日常生活中的一项挑战，也是社交参与的限制因素，尤其是对于中风后的患者。为了促进爬楼梯的运动再学习，可以应用不同的治疗措施，如运动想象和机器人辅助踏步治疗。这两种方法都是常见的治疗方法，并且已经报道了它们对康复过程的积极影响。然而，关于运动想象的神经肌肉效应存在相互矛盾的结果，并且机器人辅助倾斜台踏步对 EMG 激活的影响与实际爬楼梯相比尚不清楚。因此，我们研究了健康个体在（1）机器人辅助倾斜台 Erigo 上进行踏步任务、（2）爬楼梯的运动想象和（3）实际爬楼梯时的 EMG 活动，以便随后对下肢运动障碍的患者进行研究。目的是评估不同条件下 EMG 激活的潜在幅度无关变化。
方法
记录了主导腿的四个肌肉的 EMG 数据，分别是股直肌、股二头肌、胫骨前肌和腓肠肌内侧。采用互相关分析来测量 EMG 曲线的相似性/差异性。
结果
研究参与者的数据显示，在三个肌肉（除了腓肠肌内侧）中，爬楼梯和机器人辅助倾斜台踏步的 EMG 激活调制之间的相关系数很高。由于运动想象和休息阶段的 EMG 激活幅度没有差异，因此没有对运动想象条件的相应 EMG 数据进行进一步分析。
结论
与实际爬楼梯相比，机器人辅助倾斜台踏步而不是运动想象会引起某些腿部肌肉的相似激活。
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