Biomechanical assessment of lumbar stability determinants: an exploratory study Abstract Back pain affects between 58% and 84% of people at some time in their lives, which makes it the most important health problem in industrialized countries. According to a report published in 2008 by the CSST, back pain represents close to 30% of all compensated occupational injuries. The lumbar region was affected in 60% of cases of spinal disorders between 2004 and 2007. It is therefore vital to develop valid and reliable measurement tools that quantify the presence of deficiencies or incapacities related to these pathologies as well as effective methods of treatment in order to promote a return to work. This research project aims to implement and evaluate three measures related to muscle control of lumbar stability, to refine the evaluation protocol in order to adjust the parameters of the tests, and to collect preliminary data for future research. At the end of the work, the researchers will have established an achievable evaluation protocol in terms of difficulty of the tasks and tolerance by the target clients, while offering valid and reproducible measurements. The action mechanisms applied by different exercise programs that will be identified by these measures will be the subject of future work. Produced Under this Project Scientific Reports Biomechanical assessment of lumbar stability determinants - Exploratory study Research Report: R-742 Scientific Publications Évaluation des paramètres biomécaniques qui différencient les manutentionnaires experts et novices durant un transfert de caissesBellefeuille S.Source : Mémoire de maîtrise, Montréal, Université du Québec à Montréal, 2009, 111 pCriterion validity and between-day reliability of an inertial sensor-based trunk postural stability test during unstable sittingChristian Larivière, Hakim Mecheri, Gagnon D.Source : in Proceedings of the XIXth Congress of the International Society of Electrophysiology & Kinesiology / ISEK (19th : July 19- 21, 2012 : Brisbane, Australia), 2012Criterion validity and between-day reliability of an inertial-sensor-based trunk postural stability test during unstable sittingChristian Larivière, Hakim Mecheri, Shahvarpour A., Gagnon D., Shirazi-Adl A.Source : Journal of Electromyography and Kinesiology, vol. 23, no 4, 2013, p. 899-907Active-passive biodynamics of the human trunk when seated on a wobble chairShahvarpour A., Shirazi-Adl A., Christian LarivièreSource : (2016). Journal of Biomechanics, 49(6), 939-945. doi: 10.1016/j.jbiomech.2016.01.042 Trunk muscle reflexes are elicited by small continuous perturbations in healthy subjects and patients with low-back painLudvig D., Christian LarivièreSource : (2016). Journal of Electromyography and Kinesiology, 30, 111-118. doi: 10.1016/j.jelekin.2016.06.007Trunk postural control in unstable sitting: Effect of sex and low back pain statusChristian Larivière, Gagnon D. H., Hakim MecheriSource : (2015). Clinical Biomechanics, 30(9), 933-939. Additional Information Type: Project Number: 0099-8310 Status: Completed Year of completion: 2012 Research Field: Occupational Rehabilitation Team: Christian Larivière (IRSST)Denis Gagnon (Université de Sherbrooke)Aboulfazl Shirazi-Adl (Polytechnique Montréal)Robert Kearney (Université McGill)Hakim Mecheri (IRSST)Sophie Bellefeuille (Université du Québec à Montréal )