Triaxial MMG investigation during FES-induced cycle movements

20th Argentinean Bioengineering Society Congress

物理学;生物科学

Gelain, M.C.^1 ; Nogueira-Neto, G.N.^2 ; Nohama, P.^3 ; Gewehr, P.M.^4

Electrical Engineering and Industrial Informatics at UTFPR, Rehabilitation Engineering Laboratory, Brazil^1

Biomedical Engineering, Department of Computer Engineering, Pontificia Universidade Católica Do Paraná (PUCPR), Brazil^2

PPGTS Stricto Sensu Program, Pontificia Universidade Católica Do Paraná (PUCPR), Brazil^3

Medical Physics Bioengineering, Department of Biomedical Engineering, UTFPR, Brazil^4

关键词: Functional state;    Induced cycle;    Mmg signals;    Muscle response;    Muscle tone;    RMS values;    Spinal cord injuries (SCI);    Spinal cords;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/705/1/012063/pdf
DOI  :  10.1088/1742-6596/705/1/012063

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Spinal cord injury is damage to the spinal cord that results in loss of functions, causes muscle, joint and bone deficits, moreover it increases the muscle tone level. FEScycling is an alternative rehabilitation process to conserve the musculoskeletal system affected by the injury in the functional state. The aim of this study is to get the legs bilaterally synchronized by FES and compare MMG signal responses. The preliminary protocol consists of five consecutive contractions. The first and the last contractions were discarded and the three intermediate contractions were analyzed. A ratio between MMG values of muscle responses during propulsion and return of pedalling phases was calculated for each cycle and each leg. The applied FES profile consisted of pulse and burst on time of 250 us and 5 ms and frequencies of 1000 Hz and 20 Hz, respectively. Results showed that greater MMG RMS values tend to occur during the propulsion phase than in the return phase. MMG Z axis of RLL and MMG X axis of LLL were the axes that presented the greatest ratios. The MMG RMS signal showed that greater values tend to occur during the propulsion phase than in the return phase of the same thigh.