Ahern, K. D., Follick, M. J., Council, J. R., Laser-Wolston, N., & Litchman, J. (1988). Comparison of lumbar paravertebral EMG patterns in chronic low back pain patients and nonpatient controls.Pain, 34 153–160.
Arena, J. G., Sherman, R. A., Bruno, G. M., & Young, T. R. (1991). Electromyographic recordings of low back pain subjects and nonpain controls in six different positions: Effect of pain levels.Pain, 45 23–28.
Arena, J. G., Sherman, R. A., Bruno, G. M., & Young, T. R. (1989). Electromyographic recordings of five types of low back pain subjects and nonpain controls in different positions.Pain, 37 57–65.
Biedermann, H. J. (1984). Comments on the reliability of muscle activity comparisons in EMG biofeedback research with back pain patients.Biofeedback and Self-Regulation, 9(4), 451–458.
Biedermann, H. J. (1990). Weight lifting in a postural restraining device: A reliable method to generate paraspinal constant force contractions.Clinical Biomechanics, 5 180–182.
Biedermann, H. J., DeFoa, J. L., & Forrest, W. J. (1991). Muscle fiber directions of iliocostalis and multifidus: Male-Female differences.Journal of Anatomy, 179 163–167.
Biedermann, H. J., & Monga, T. N. (1985). Relaxation oriented EMG biofeedback with back pain patients: Evaluation of paraspinal muscle activity.Clinical Biofeedback and Health, 8(2), 119–123.
Biedermann, H. J., McGhie, A., Monga, T. N., & Shanks, G. L. (1987). Perceived and actual control in EMG treatment of back pain.Behavior Research and Therapy, 25(2), 137–147.
Biedermann, H. J., Shanks, G. L., & Inglis, J. (1990). Median frequency estimates of paraspinal muscles: Reliability analysis.Electromyographic Clinical Neurophysiology, 30 83–88.
Biedermann, H. J., Shanks, G. L., Forrest, W. J., & Inglis, J. (1991). Power spectrum analyses of electromyographic activity.Spine, 16(10), 1179–1184.
Cohen, M. J., Swanson, G. A., Naliboff, B. D., Schandler, S. L., & McArthur, D. L. (1986). Comparison of electromyographic response patterns during posture and stress tasks in chronic low back pain patterns and control.Journal of Psychosomatic Research, 30(2), 135–141.
Cram, J. R. (1990).Clinical EMG for surface recordings (Vol. 2). Nevada City, CA: Clinical Resources.
Cram, J. R., & Steger, J. C. (1983). EMG scanning in the diagnosis of chronic pain.Biofeedback and Self-Regulation, 8(2), 229–241.
DeFoa, J. L., Forrest, W., & Biedermann, H. J. (1989). Muscle fiber direction of longissimus, iliocostalis, and multifidus: Landmark derived reference lines.Journal of Anatomy, 163 243–247.
DeLuca, C. J. (1979). Physiology and mathematics of myoelectric signals.IEEE Transactions on Biomedical Engineering, BME-6 313–325.
DeLuca, C. J. (1984). Myoelectric manifestations of localized muscular fatigue in humans.CRC Critical Review in Biomedical Engineering, 11 251–279.
Dolce, J. J., & Raczynski, J. M. (1985). Neuromuscular activity and electromyography in painful backs: Psychological and biomechanical models in assessment and treatment.Psychological Bulletin, 97 502–520.
Durnin, J. V. G. A., & Womersley, J. (1974). Body fat assessed from total body density and its estimation from skinfold thickness: Measurements on 481 men and women aged from 16 to 72 years.British Journal of Nutrition, 32 77–97.
Flor, H., Haag, G., & Turk, D. C. (1986). Long-term efficacy of EMG biofeedback for chronic rheumatic back pain.Pain, 27 195–202.
Flor, H., & Turk, D. C. (1984). Etiological theories and treatments for chronic back pain. I. Somatic models and interventions.Pain, 19 105–121.
Flor, H., Turk, D. C., & Birbaumer, N. (1985). Assessment of stress-related psychophysiological reactions in chronic back pain patients.Journal of Consulting and Clinical Psychology, 53 354–364.
Gilmore, L. D., & DeLuca, C. J. (1985). Muscle fatigue monitor: Second generation.IEEE Transaction on Biomedical Engineering, BME-32 75–78.
Hays, W. L. (1973).Statistics for the social sciences (2nd ed.). New York: Holt, Rinehart & Winston.
National Institute on Drug Abuse (1981).New approaches to treatment of chronic pain: A review of multidisciplinary pain clinics and pain centers. Research monograph series, 36. Rockville, MD: Department of Health and Human Services, Public Health Service.
Nouwen, A., & Solinger, J. W. (1979). The effectiveness of EMG biofeedback training in low back pain.Biofeedback and Self-Regulation, 4 103–111.
Roy, S. H., DeLuca, C. J., & Scheider, J. (1986). Effects of electrode location on myoelectric conduction velocity and median frequency estimates.Journal of Applied Physiology, 61 1510–1517.
Sihvonen, T., Partanen, J., & Hänninen, O. (1988). Averaged (rms) surface EMG in testing back function.Electromyographic Clinical Neurophysiology, 28 335–339.
SAS Institute Inc. (1988).SAS user's guide: Statistics, version 5 edition. Cary, NC: SAS.
Tabachnick, B. G., & Fidell, L. S. (1988).Using multivariate statics. New York: Harper and Row.
Teufel, R., & Traue, H. C. (1989). Myogenic factors in low back pain. In C. Bischoff, H. C. Traue, & J. Zenz (Eds.),Clinical perspectives on headache and low back pain. Toronto: Hogrefe & Huber.
Womersley, J., & Durnin, J. V. (1977). A comparison of the skinfold method with the extent of overweight and various weight and height relationships in the assessment of obesity.British Journal of Nutrition, 38 271–284.