XXVI Conference of the International Society of Biomechanics, BRISBANE, AUSTRALIE, 23-/07/2017 - 27/07/2017In a context of musculoskeletal disorders prevention, movement analysis can provide a better understanding of subject exposure to biomechanical factors. In laboratory studies, these analyses are realized using optoelectronic motion capture systems, which are currently considered as a reference regarding their accuracy of measurements. As for ?in the field studies?, movement analysis using these systems is more challenging due to the difficulties related to volume calibration and marker occlusions. For these reasons, an emerging approach, using magneto-inertial measurement units (MIMUs), could be appropriate for in the field movement analysis. Several studies focused on the acquisition of upper limb kinematics using MIMUs. Some studies analyzed the impact of sensor placement and calibration on joint angles estimation, while another study underlined the importance of sensor placement and specific calibration, using a scapula locator, for the scapulo-thoracic movement estimation. However, this last study only investigated the scapulothoracic kinematics during anteflexion and adduction motions. To broaden these first results, this study aimed at estimating various shoulder movements using MIMU data on the upper limb with and without modifying the scapula sensor calibration. Furthermore, both the scapulothoracic and gleno-humeral joint angles will be investigated and compared to the same joint angles computed with an optoelectronic system
