| Summary: | 碩士 === 明志科技大學 === 工業工程與管理研究所 === 100 === This study recruited eighteen healthy males as participants to walk upstairs and downstairs on a four-step, wooden ergonomic stair to explore the foot placement of pace, the foot clearance and the completion time. Each participant was requested to carry the box with normal pace under 15 testing combinations with three sizes of box (small, medium, and large), two weights (5, 15 kg), and two carrying methods (front and lateral handling). Motion analysis system was used to measure the foot placement of pace, the foot clearance and the completion time. Results show that different box sizes would change the foot placement and the completion time. The larger box made the participant’s foot placement closer to the inside of footstep and therefore resulting in longer completion time. The carrying methods did affect the foot clearance while walking upstairs; that is, front handling would cause the larger foot placement from the salient of the footstep. The carrying methods also significantly influenced the completion time whenever upstairs or downstairs (p<0.05). However, no difference was found in the foot placement and the foot clearance between the two carried weights (p>0.05). The findings from this study were quite valuable for the design of carrying jobs on stairs.
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