Effects of Grip Curvature and Size of Hand on Comfort for the Unimanual Operation of Handheld Touchscreen Device

摘要: This study aims to investigate the effect of size a hand and curvature handheld touchscreen devices on comfort when unimanually using devices. By rated subjectively recording EMG, was measured for use three mock-ups device with different curvatures; one had flat surface others curvatures 400R 100R each. During experiment, tapping, typing dragging tasks were performed participants evaluated objectively. A difference among analyzed as well participant groups classified by their preferred hand. The results indicated that affected neither muscle activities nor subjective level. Moreover, found affect objectively measured, but not rated. Overall, this suggests does consistent objective data. Also, users’ may be more critical factor than determining touch screen use.