抄録
In designing a plastic bottle, a quantitative evaluation is needed for time crunch. In this study, we assumed that a plastic bottle could be evaluated by the load that the user felt. We analyzed motions in using a 2L plastic bottle and confirmed that the user felt a large load in lifting and inclining the bottle. We indicated a connection between myogenic potential and subjective evaluation in each basic motion. In order to evaluate the physical workload, we proposed the method by measuring myogenic potential. We evaluated mockups by the method and indicated to reduce the load by installing the inclination on short side of the bottle.