The influence of an exercise on the visual funciton : On the stricture of visual field during exercise

Abstract

The purpose of this study is to investigate whether the visual field constricts or extends during exercise on the basis of two experiments. In the experiment 1, whether the brightness of the peripheral visual field attenuates or sensitizes during exercise was investigated by using the peripheral visual reaction time. The visual field during exercise was investigated in the experiment 2. From this study, it became clear that the visual field constricts during exercise. It was conjectured that the visual filed constricts under the condition over 140-150 beats/min (heart rate). The stricture ratio of the visual field was about 10% of the visual field before exercise. It was conjectured that after exercise, the visual field recovers quickly in a few minutes, but, once recovered, the visual filed neither constricts nor extends again.