School of Nursing, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-0857, Japan.
Physiol Behav. 2012 May 15;106(2):117-21. doi: 10.1016/j.physbeh.2012.01.012. Epub 2012 Jan 20.
Strenuous exercise may have the detrimental effects on visual perception. However, it is unclear whether visual resolution is related to the detrimental effects on visual perception. The purpose of this study was to examine whether the effects of strenuous exercise on visual perception are dependent on visual resolution. Given that visual resolution decreases in the periphery of the visual field, we hypothesized that if visual resolution plays a role in the detrimental effects on visual perception, the detrimental effects may be exaggerated toward the periphery of the visual field. Simple visual reaction time was measured at rest and during cycling at 40% and 75% peak oxygen uptakes (VO(2)). Visual stimuli were randomly presented at 2°, 10°, 30°, and 50° to either the right or left of the midpoint between the eyes with equal probability. RT was fractionated into premotor and motor components (i.e. premotor time and motor time) based on electromyographic recording. The premotor time during exercise at 40% peak VO(2) was not different from that at rest. In contrast, the premotor time during exercise at 75% peak VO(2) was significantly longer than that at rest (p=0.018). The increase in the premotor time was observed irrespective of eccentricity, and the detrimental effects were not exaggerated toward the periphery of the visual field. The motor time was not affected by exercise. The current findings suggest that the detrimental effects of strenuous exercise on visual perception are independent of visual resolution.
剧烈运动可能对视觉感知产生有害影响。然而，目前尚不清楚视觉分辨率是否与视觉感知的有害影响有关。本研究旨在探讨剧烈运动对视觉感知的影响是否依赖于视觉分辨率。由于视觉分辨率在视野的周边降低，我们假设如果视觉分辨率在视觉感知的有害影响中起作用，那么这种有害影响可能会在视野的周边放大。在休息和以 40%和 75%峰值摄氧量（VO(2)）进行骑行时，测量简单的视觉反应时间。视觉刺激以相等的概率随机出现在眼睛中点的右侧或左侧的 2°、10°、30°和 50°处。根据肌电图记录，将 RT 分为前运动和运动成分（即前运动时间和运动时间）。在 40%峰值 VO(2)运动时的前运动时间与休息时无差异。相比之下，在 75%峰值 VO(2)运动时的前运动时间明显长于休息时（p=0.018）。前运动时间的增加与偏心率无关，并且这种有害影响在视野的周边没有放大。运动时间不受运动的影响。目前的研究结果表明，剧烈运动对视觉感知的有害影响与视觉分辨率无关。
