Browse > Article
http://dx.doi.org/10.9718/JBER.2013.34.2.63

Comparison of EMG and Muscle Reaction Force to Detect Exercise Intention  

Heo, J.H. (School of Biomedical Engineering, Konkuk Univ.)
Kim, J.W. (School of Biomedical Engineering, Konkuk Univ.)
Kwon, Y.R. (School of Biomedical Engineering, Konkuk Univ.)
Eom, Gwang-Moon (School of Biomedical Engineering, Konkuk Univ.)
Jeong, K.Y. (Division of Biomedical Engineering, Chonbuk National University)
Kwon, D.K. (Division of Biomedical Engineering, Chonbuk National University)
Publication Information
Journal of Biomedical Engineering Research / v.34, no.2, 2013 , pp. 63-68 More about this Journal
Abstract
Activeness of exercise is critical for stroke rehabilitation so that application of stimulation in response to patient's intention would be effective in FES cycling. The purpose of this study was to investigate the relationship between muscle reaction force (MRF) and electromyogram (EMG) during cycling exercise, for the future usage of MRF as patients' intention signal. Seven young men ($24{\pm}1.63$ yrs) participated in this study. Cycling speed was set to 20 RPM and 60 RPM. MRF and EMG were measured in the vastus lateralis muscle of right leg. Active cycling was performed at the maximal load (16 Nm) of an ergometer. Angle dependent artifact in MRF was measured from passive cycling and was subtracted from the MRF of active cycling. The delay of MRF with respect to EMG envelope and their correlation coefficients were derived from the best of cross correlation. MRF was significantly correlated with EMG amplitude in all subjects (p<0.01). Their mean correlations were 0.84 and 0.91 for 20 RPM and 60 RPM, respectively. Mean delay in MRF was 59.14 ms and 53.14 ms for 20 RPM and 60 RPM, respectively. The result suggests that MRF can be used to assess patient's intention for exercise as a substitute to EMG. The method may be applied to FES cycling to encourage patient's effort which is critical for stroke rehabilitation.
Keywords
Exercise intention; Cycling exercise; EMG; Muscle Reaction Force; Vastus Lateralis muscle;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 G. Sarre, R. Lepers. "Cycling exercise and the determination of electromechanical delay", Journal of Electromyography and Kinesiology 17, pp. 617-621, 2007.   DOI   ScienceOn
2 Duncan PW, Goldstein LB, Matchar D, Divine GW, Feussner J, "Measurement of motor recovery after stroke", Outcome assessment and sample size requirements. Stroke 23: pp. 1084- 1089, 1992.   DOI   ScienceOn
3 J. H. Hur, J. W. Kim, Y. R. Kwon, G. M. Eom, D. K. Kwon. "Analysis of EMG Pattern with Various Pedaling Rate", The Korea Society of Medical & Biological Engineering 2011 May 43.
4 S. H Jang et al., "Differences of cortical activation pattern between cortical and corona radiata infarct", Neuroscience Letters, 417, pp. 138-142, 2007.   DOI   ScienceOn
5 Teasell R et al., "Progress in clinical neurosciences : stroke recovery and rehabilitation", Can J neurol Sci. vol. 33, no. 4, pp. 357-364, 2006.   DOI
6 Butefisch C, Hummelsheim H, Denzler P, Mauritz KH, "Repetitive training of isolated movements improves the outcome of motor rehabilitation of the centrally paretic hand", J Neurol Sci 130: pp. 59-68, 1995.   DOI   ScienceOn
7 Nudo RJ, Wise BM, SiFuentes F, Milliken GW, "Neural substrates for the effects of rehabilitative training on motor recovery after ischemic infarct", Science 272: pp. 1791-1794, 1996.   DOI   ScienceOn
8 R. Li et al., "Combined Electromyography (EMG)-Driven System with Functional Electrical Stimulation (FES) for Poststroke Rehabilitation", Biomedical Robotics and Biomechatronics, pp. 642-646, 2008.
9 K. Kim et al., "Analysis on the Assist Characteristics for the Knee Extension Motion of Lower Limb Orthosis Using Muscular Stiffness Force Feedback", J. Biomed. Eng. Res., vol. 31, pp. 217-226, 2010.
10 Emilia Ambrosini et al., "Cycling induced by electrical stimulation improves motor recovery in postacute hemiparetic patients a randomized controlled trial", Journal of the American heart association, Res., vol. 42, no. 4, pp. 1068-1073, 2011.
11 P. F. Vint, S. P. McLean, G. M. Harron, "Electromechanical delay in isometric actions initiated from nonresting levels", Med. Sci. Sports Exerc. 33 pp. 978-983, 2001.   DOI   ScienceOn