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A Dynamical Analysis of Kneading Using a Motion Capture Device

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Document pages: 8 pages

Abstract: Physical skills such as playing the musical instrument are hard to learn and take long timeto master. To investigate what makes physicalskills so dificult to learn and how we can evaluate the level of skills, we examined the kneadingin ceramic art, an action to prepare the clay forshaping and studied the physical movements ofboth the learners and experts.Kneading is an appropriate sample of physicalskill for studying the body movement because allthe parts of body need to be coordinated to accomplish the task. The task is not hopelessly difficult for the complete novices to follow the instruction although the end result is not satisfactory.It normally takes about three years to master thekneading skill. It is also relatively easy to judgehow well the subjects accomplished the task byobserving the shape of the clay.After careful examination of the movement using video tapes, we employed a motion capturedevice to collect the data of movement from anexpert, an experienced person, and three novices.We discovered that the expert elegantly splits hisbody into two parts, torso and arms, and effectively coordinates these two parts while kneadingthe clay.

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