Abstract
The expert worker (85 years old) has worked for 70 years and the non expert (16 years old) has worked 1 year of experience for the lathe processing The subjects were compared the difference in the waist, the shoulder and the fore arm movement between the two worker while they were chucking on the lathe machine Determination used the same parts and the same type of lathe machine for investigated There were 4 main categories that related three standing position alignment and two hand positions on the key chuck Using the 6 infrared cameras and 2 video cameras captured the position of each marker All markers position data which synchronization was taken by a motion analysis system (sampling rate 100Hz) As a results show the balance movement both the waist and the shoulder during the chucking that had significantly greater in the expert worker than the non expert worker Only standing position of expert influenced on distance of movement
