Guo Yun, Gao Feng, Li Jianjun, Yang Mingliang, Li Jun, Yang Degang, Du Liangjie
School of Rehabilitation, Capital Medical University, Beijing, P.R. China.
Department of Spinal and Neural Function Reconstruction, China Rehabilitation Research Center, Beijing, P.R. China.
NeuroRehabilitation. 2021;48(3):345-351. doi: 10.3233/NRE-201647.
Electromyographic biofeedback (EMG BF) training is an effective method of promoting motor learning and control in neurorehabilitation, but its effect on quadriceps femoris muscle in individuals with spinal cord injury (SCI) is unknown.
The aim of the study was to investigate the therapeutic effect of EMG BF training on motor function of quadriceps femoris in patients with incomplete SCI.
Thirty-three incomplete paraplegic patients with quadriceps femoris strength ranging grade 1 to grade 3 less than 6 months post-injury were enrolled. Control group (n = 16) received conventional physical therapy to enhance quadriceps femoris strength, while intervention group (n = 17) was treated with conventional physical therapy and EMG BF training. All received treatment once a day for 30 days. Surface electromyograph (sEMG), muscle strength and thigh circumference size were assessed to evaluate motor function of quadriceps femoris. Activities of daily living (ADL) was evaluated by Modified Barthel Index (MBI). All the measures evaluated three times in total.
Compared to the control group, intervention group significantly improved on sEMG values and strength of quadriceps femoris (PsEMG < 0.001, Pstrength < 0.05). sEMG values of quadriceps femoris increased earlier than strength of quadriceps femoris in intervention group (Prest = 0.07, Pactive = 0.031). There were no statistical differences in thigh circumference size and ADL scores between groups (Pthigh > 0.05, PADL = 0.423).
EMG BF training appeared to be a useful tool to enhance motor function of quadriceps femoris in patients with incomplete SCI. sEMG could quantify the changes of single muscle myodynamia precisely before visible or touchable changes occur.
肌电图生物反馈（EMG BF）训练是神经康复中促进运动学习和控制的有效方法，但其对脊髓损伤（SCI）患者股四头肌的影响尚不清楚。
本研究旨在探讨EMG BF训练对不完全性SCI患者股四头肌运动功能的治疗效果。
纳入33例损伤后不到6个月、股四头肌肌力为1至3级的不完全性截瘫患者。对照组（n = 16）接受常规物理治疗以增强股四头肌力量，干预组（n = 17）接受常规物理治疗和EMG BF训练。所有患者均每天接受一次治疗，共30天。评估表面肌电图（sEMG）、肌肉力量和大腿围度大小，以评估股四头肌的运动功能。采用改良Barthel指数（MBI）评估日常生活活动能力（ADL）。所有测量指标共评估三次。
与对照组相比，干预组股四头肌的sEMG值和力量显著改善（PsEMG < 0.001，Pstrength < 0.05）。干预组股四头肌的sEMG值比股四头肌力量更早增加（Prest = 0.07，Pactive = 0.031）。两组之间大腿围度大小和ADL评分无统计学差异（Pthigh > 0.05，PADL = 0.423）。
EMG BF训练似乎是增强不完全性SCI患者股四头肌运动功能的有用工具。sEMG可以在可见或可触及的变化发生之前精确量化单块肌肉肌力的变化。
