Maillet Jean, Rossi Jeremy, Hug François, Proquez Jean-Jacques, Nordez Antoine
Nantes Université, Movement - Interactions - Performance, MIP, EA 4334, F-44000, Nantes, France; Institut Français du Textile et de l'Habillement IFTH, France.
Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France.
Appl Ergon. 2022 Jul;102:103737. doi: 10.1016/j.apergo.2022.103737. Epub 2022 Apr 6.
To teach a skilled motor task, it is crucial to understand the characteristics of expertise. The aim of the present study was to compare the kinematics of the hand sewing task between novices (n = 10), intermediates (n = 10) and experts (n = 10). Compared to novices and intermediates, the proximal joint of expert participants was less involved in the task than their distal joints. The shoulder of experts stayed closer to the trunk, while the ranges of motion of the wrist and fingers were higher. This ability enabled them to avoid lifting the arm, which was resting on the table. We observed a low cycle-to-cycle variability of the movement pattern for experts, while it was more variable in novices. Moreover, experts shared similar joints synergies attesting of an "experts" common gesture. This knowledge gained about the hand sewing kinematics can be used to refine the training process of dressmakers.
要教授一项熟练的运动任务，了解专业技能的特点至关重要。本研究的目的是比较新手（n = 10）、中级者（n = 10）和专家（n = 10）在手工缝纫任务中的运动学特征。与新手和中级者相比，专家参与者的近端关节在任务中的参与度低于其远端关节。专家的肩部更靠近躯干，而手腕和手指的活动范围更大。这种能力使他们能够避免抬起放在桌子上的手臂。我们观察到专家的运动模式在周期间的变异性较低，而新手的变异性更大。此外，专家们具有相似的关节协同作用，证明了一种“专家”的共同手势。所获得的关于手工缝纫运动学的知识可用于完善裁缝的培训过程。
