Changes in Multi-Muscle and Multi-Joint Coordination Following Repetitive-Movement-Induced Fatigue Abstract Fatigue is one of the most common symptoms in the initial stages of cumulative trauma disorders (CTDs). This study's hypothesis is that repetitive movements not only induce local tissue changes (local fatigue) but also modify motor coordination (global fatigue). This implies a new definition of fatigue that takes into account central nervous system function. To verify this hypothesis, a new electromyographic (EMG) measure of coordination will be used to evaluate fatigue and identify its components in healthy subjects and subjects with cumulative-trauma-induced shoulder injuries. The results of this study could contribute to the development of a model capable of elucidating the relation between fatigue and cumulative-trauma-induced motor control deficits. Produced Under this Project Scientific Publications Movement reorganization to compensate for fatigue during sawingCôté J. N., Mathieu P. A., Levin M. F., Feldman A. G.Source : Experimental Brain Research, vol. 146, no 3, 2002, p. 394-398Different effects of fatigue on kinematics and muscle activity of hammering and sawingCôté J. N., Mathieu P. A., Levin M. F., Feldman A. G.Source : in XXVe Congrès de la Société de Biomécanique (13-14 septembre 2001 : Marseille, France), Archives of Physiology and Biochemistry vol. 109 (Suppl.), p. 61Evidence of an EMG global minimum and its location relative to kinematics of hammering movementsCôté J. N., Archambault P. S., Mathieu P. A., Levin M. F., Feldman A. G.Source : In From Basic Science to Applications : International Symposium on Progress in Motor Control III (Montréal, August 15-18, 2001 : Montréal, Canada), 2001Changes in multijoint coordination induced by fatigue during repetitive movementCôté J. N., Mitniski A., Levin M. F., Feldman A. G.Source : in Society for Neuroscience 30th Annual Meeting (30th : September 4-9, 2000 : New Orleans, Louisiana), 2000The influence of fatigue on multi-muscle and multi-joint coordination during hammeringCôté J. N., Feldman A. G., Levin M. F.Source : XIth Congress of the Canadian Society for Biomechanics (11th : August 23-26, 2000 : Montreal, Canada), 2000 L'influence de la fatigue sur les mouvements répétitifs multi-articulaires de martèlement: résultats préliminairesCôté J. N., Mathieu P. A., Feldman A. G.Source : In Les sciences au XXie siècle : Actes du congrès de l'Association canadienne-française pour l'avancement des sciences / ACFAS (68e : 15-19 mai, 2000 : Montréal, Canada), 2000Differences in multi-joint kinematic patterns of repetitive hammering in healthy, fatigued and shoulder-injured individualsCôté J., Levin M. F., Raymond D., Mathieu P. A., Feldman A. G.Source : Clinical Biomechanics, vol. 20, no 6, 2005, p. 581-590 Additional Information Type: Project Number: 0097-0770 Status: Completed Year of completion: 2003 Research Field: OSH and Sustainable Prevention Work Environment Team: Anatol G. Feldman (Institut de réadaptation Gingras-Lindsay de Montréal)L'Hocine Yahia (Polytechnique Montréal)Mindy F. Levin (Université de Montréal)