Flexion relaxation phenomenon of back muscles in discriminating between healthy and chronic low back pain women

Othman, S.H. and Ibrahim, F. and Omar, S.Z. and Rahim, R.B.A. (2008) Flexion relaxation phenomenon of back muscles in discriminating between healthy and chronic low back pain women. In: 4th Kuala Lumpur International Conference on Biomedical Engineering 2008, Biomed 2008, 2008, Kuala Lumpur.

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This paper describes the investigation of Surface Electromyography (sEMG) signals of back muscles during forward flexion and extension in healthy and low back pain (LBP) women. Flexion Relaxation Phenomenon (FRP) of EMG was observed and quantitatively analyzed. There were three groups of Malaysian women aged between 20 to 50 years old volunteers participated in this study. The groups were group 1, 2, and 3 which consist of 5 healthy women, 5 LBP patients with FRP and 5 LBP patients without FRP with respectively. Every participant was trained to perform two types of forward flexion; maximum forward flexion and 90° forward flexion with hands on the knees. The sEMG and the motion signals were recorded during forward flexion of the trunk at the back muscles. Four parameters were found to be statistically significant differences (p<0.001) amongst groups. These parameters are average RMS during full flexion, ratio between average RMS during full flexion and average RMS during standing, flexion relaxation ratio (FRR) and extension relaxation ratio (ERR). © 2008 Springer-Verlag.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference code: 82241 Export Date: 29 January 2014 Source: Scopus doi: 10.1007/978-3-540-69139-6-53 Language of Original Document: English Correspondence Address: Othman, S. H.; University of Malaya, Department of Biomedical Engineering, Faculty of Engineering, Kuala Lumpur, Malaysia; email: ctjaja5@yahoo.com References: Allen, C.E.L., Muscle action potential used in the study of dynamic anatomy (1948) Br J Phys Med, 11, pp. 66-73; Floyd, W.F., Silver, P.H.S., The function of the erector spinae muscles in certain movements and postures in man (1955) J Physiol., 129, pp. 133-143; Sihvonen, T., Flexion relaxation of the hamstring muscles during lumbar-pelvic rhythm (1997) Arch Phys Med Rehabil., 78, pp. 486-490; Watson, P.J., Booker, C.K., Main, C.J., Chen, C.A.N., Surface electromyography in the identification of chronic low back pain patients: The development of the flexion relaxation ratio (1997) Clinical Biomechanics, 12 (3), pp. 165-171; Shin, G., Shu, Y., Li, Z., Jiang, Z., Mirka, G., Influence of knee angle and individual flexibility on the flexion-relaxation response of the low back musculature (2004) Journal of Electromyography and Kinesiology, 14 (4), pp. 485-494. , DOI 10.1016/j.jelekin.2003.12.001, PII S1050641103001536; Kuriyama, N., Ito, H., Electromyographic functional analysis of the lumbar spinal muscles with low back pain (2005) J Nippon Med Sch., 72, pp. 165-173; Kippers, V., Parker, A.W., Posture related to myoelectric silence of erector spinae during trunk flexion (1984) Spine, 9, pp. 740-745; Schultz, A.B., Haderspeck-Grib, K., Sinkora, G., Warwick, D.N., Quantitative studies of the flexion-relaxation phenomenon in the back muscles (1985) Journal of Orthopaedic Research, 3 (2), pp. 189-197. , DOI 10.1002/jor.1100030208; Triano, J.J., Schultz, A.B., Correlation of objective measure of trunk motion and muscle function with low back disability ratings (1987) Spine, 12, pp. 561-565; Sihvonen, T., Partanen, J., Hannien, O., Soimakallio, S., Electrical Behavior of low back muscles during lumbar pelvic rhythm in low back pain patients and healthy controls (1991) Arch Phys Med Rehabil, 72, pp. 1080-1087; Gupta, A., Analyses of myo-electrical silence of erectors spinae (2001) J Biomech., 34 (4), pp. 491-496; Portnoy, H., Morin, F., Electromyographic study of postural muscles in various positions and movements (1956) Am J Physiol., 186 (1), pp. 122-126; Taylor, J., Twomey, L., Sagittal and horizontal plane movement of the human lumbar vertebral column in cadavers and in the living (1980) Rheumatology and Rehabilitation, 19 (4), pp. 223-232; Kaigle, A.M., Wessberg, P., Hansson, T.H., Muscular and kinematic behavior of lumbar spine during flexion-extension (1998) J Spinal Disord., 11 (2), pp. 163-174; McGorry, R.W., Hsiang, S.M., Fathallah, F.A., Clancy, E.A., Timing of activation of the erector spinae and hamstrings during a trunk flexion and extension task (2001) Spine., 26 (4), pp. 418-425; Ahern, D.K., Follick, M.J., Council, J.R., Laser-Wolston, N., Litchman, H., Comparison of lumbar paravertebral EMG patterns in chronic low back pain patients and non-pain controls (1988) Pain, 34, pp. 153-160; Geisser, M.E., Haig, A.J., Wallbom, A.S., Wiggert, E.A., Pain-related fear, lumbar flexion, and dynamic EMG among persons with chronic musculoskeletal low back pain (2004) Clin J Pain, 20 (2), pp. 61-69; Shirado, O., Ito, T., Kaneda, K., Flexion-relaxation phenomenon in the back muscles: A comparative study between healthy subjects and patients with chronic low back pain (1995) Am J Phys Med Rehabil., 74, pp. 139-144; Redfern, M.S., Hughes, R.E., Chaffin, D.B., (1993) High-pass Filtering to Remove Electrocardiographic Interference from Torso EMG Recordings. Clin. Biomech., 8, pp. 44-48; Drake, J., Callaghan, J.P., Elimination of electrocardiogram contamination from electromyogram signals: An evaluation of currently used removal techniques (2006) J Electromyography Kinesiology, 16, pp. 175-187; Geisser, M.E., Ranavaya, M., Haig, A.J., Roth, R.S., Zucker, R., Ambroz, C., Caruso, M., A meta-analytic review of surface electromyography among persons with low back pain and normal, healthy controls (2005) Journal of Pain, 6 (11), pp. 711-726. , DOI 10.1016/j.jpain.2005.06.008, PII S1526590005007479
Uncontrolled Keywords: back muscles, Flexion relaxation phenomenon, low backpain, Chronic low back pain, Malaysians, Motion signals, Relaxation phenomena, Relaxation ratios, Statistically significant difference, Surface electromyography, Biomedical engineering, Muscle, Physics, Viscoelasticity, Physiological models
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 24 Mar 2014 03:44
Last Modified: 01 Nov 2017 04:03
URI: http://eprints.um.edu.my/id/eprint/9297

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