Development of a closed-loop controller for functional electrical stimulation therapy plus visual feedback balance training for standing balance training

被引:0
作者
Lee, Jae W. [1 ,2 ]
Grabke, Emerson [1 ,2 ]
Chow, Kelvin [1 ,2 ]
Musselman, Kristin E. [2 ,3 ,4 ]
Masani, Kei [1 ,2 ]
机构
[1] Univ Toronto, Inst Biomed Engn, 164 Coll St, Toronto, ON M5S 3G9, Canada
[2] Univ Hlth Network, Toronto Rehabil Inst, KITE, 520 Sutherland Dr, Toronto, ON M4G 3V9, Canada
[3] Univ Toronto, Temerty Fac Med, Dept Phys Therapy, 500 Univ Ave, Toronto, ON M5G 1V7, Canada
[4] Univ Toronto, Rehabil Sci Inst, Temerty Fac Med, 500 Univ Ave, Toronto, ON M5G 1V7, Canada
关键词
Balance training; Visual feedback training; Functional electrical stimulation; Neurorehabilitation; Spinal cord injury; ANKLE STIFFNESS; QUIET; STABILITY; TORQUE;
D O I
10.1016/j.medengphy.2024.104238
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Individuals with incomplete spinal cord injury (iSCI) demonstrate impaired upright balance, resulting in increased fall risk. Task-specific visual feedback balance training (VFBT) has previously been shown to improve upright balance. In addition, therapies using functional electrical stimulation (FES) have been shown to improve various motor functions. Combining VFBT with FES therapy (FES+VFBT) may synergistically improve balance control for those with iSCI. Here we developed the FES+VFBT system that delivered physiologically relevant electrical stimulations to soleus (SOL) and tibialis anterior (TA) muscles during VFBT. Ten young able-bodied individuals participated. Kinematic, kinetic, SOL and TA electromyography (EMG) data during quiet standing and limits-of-stability test were used to design the controller for the FES+VFBT system. To evaluate the performance of the designed controller, the controller outputs, which represented stimulation intensities, were compared with the recorded SOL and TA EMG during the four tasks associated with VFBT (i.e., bullseye, hunting, colour-matching, and ellipse tasks). Except for the bullseye task, the designed controller outputs were highly correlated with the recorded EMG, suggesting that the controller could generate electrical stimulations in a physiological manner. We expect that the addition of FES therapy to VFBT could contribute to improving standing balance for individuals with iSCI.
引用
收藏
页数:9
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