| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 102 === Moving to the destination, human must perceive potential collision continually, and maintains personal space (PS) to modulate segmental displacement or gait-pattern. PS is a flexible safe zone around oneself and leads walker adapt obstacles or other pedestrian. Ecological approach and concept of PS were used to investigate how the environment affect adaptive behavior and to know social affordance perception in human locomotor behavior. Twelve pairs of participants were recruited. They were demanded to walk through apertures face-to-face based on setting rhythm and avoid collision with door plank and the other participant. Experimental manipulation included stride frequency (100 and 130 steps/min) and aperture width (0.9, 1.1, 1.3, and 1.5 times of pairs shoulder width amount). Trunk and feet movement data were recorded by motion capture system. Shoulder rotation angle, antero-posterior axis distance, and lateral axis distance were calculated to define adaptive behavior and PS while two walkers pass through apertures simultaneously. It was found that participants prefer to keep a safety personal distance. Antero-posterior axis radii were not affected by the walking speed and aperture width, but the safety distance in lateral axis would vary with aperture widths. When a pair of walkers passed through the door aperture at the same time, they performed lager shoulder rotation magnitude in wider door aperture. Shoulder rotation magnitude was regulated by the width of aperture.
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