Stratégies motrices du membre supérieur et effet de rétroactions chez des personnes présentant un syndrome d'abutement de l'épaule

Authors: Roy, Jean-Sébastien
Advisor: Moffet, HélèneMcFadyen, Bradford James
Abstract: The first objective of this thesis was to characterize upper limb motor strategies in persons with shoulder impingement syndrome (SIS) during reaching movements. The second was, for the same population, to evaluate the effects of supervised and unsupervised movement training with feedback on motor strategies. Thirty-three subjects with SIS participated in two visits, one day apart. Motor strategies were characterized using upper limb kinematic patterns (total joint excursion and final position) and shoulder muscular activity while reaching toward targets located at 90° of arm elevation in two different planes. Upper limb motor strategies were evaluated before, during, immediately after and 24 hours after supervised movement training and immediately after unsupervised training. Movement training, performed during the first visit, consisted of reaching movements executed under the supervision of a physiotherapist who gave feedback to restore proper shoulder control; while unsupervised training, performed during the second visit, consisted of reaching movements executed in front of a mirror. Subjects with SIS had motor deficits during reaching movements with more involvement of the trunk and shoulder in rotation, a more anterior plane of shoulder elevation at the end of reaching and alteration in the trapezius muscular activity. During and following supervised movement training with feedback, total excursion of the trunk and final position of the trunk and shoulder were improved during and immediately after training, while 24 hours after training, the kinematics of these joints were back to baseline level. The addition of unsupervised training with visual feedback, performed 24 hours after the supervised training, helped return kinematics back to the level observed immediately after supervised training. In conclusion, supervised movement training with feedback brought temporary changes in the upper limb motor strategies and improved some aspects of the kinematics. One supervised training session was not enough to bring about permanent improvement in the kinematic patterns. However, unsupervised training helped to regain the improved kinematics and appears to be a good complement to supervised training. Therefore, our results support the use of movement training to rehabilitate the motor deficits associated with SIS.
Document Type: Thèse de doctorat
Issue Date: 2008
Open Access Date: 13 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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