Increase in reaction time for the peripheral visual field during exercise above the ventilatory threshold
Increase in reaction time for the peripheral visual field during exercise above the ventilatory threshold
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DOI：
10.1007/s00421-005-1330-7
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发表时间：
2005-07-01
影响因子：
3
通讯作者：
Oda, S
中科院分区：
文献类型：
--
作者：
Ando, S;Kimura, T;Oda, S
本研究的目的是确定在递增负荷运动中，运动强度超过解释阈值（VT）时，周边视野的反应时（RT）是否增加，并检查有氧能力与RT增加程度之间的关系。9名健康受试者在静息时、在自行车测力计上运动时、运动后立即。热身运动结束后，以40 W功率骑自行车3 min，每3 min递增40 W，直至240 W。在增量运动期间，在每次增加工作负荷开始后1分钟和30秒进行RT测量。RT的周边视野显着增加，在VT以上的运动强度，在休息时相比。240 W时的RT减去休息时的RT，RT的增加与最大摄氧量（O-2 max）呈负相关（r =-0.73，P < 0.05）。很可能是高有氧运动能力衰减的RT的增加，为周边视野在力竭运动。
The purpose of the present study was to determine whether reaction time (RT) for the peripheral visual field increases at exercise intensity above the ventilatory threshold (VT) during incremental exercise and to examine the relationship between aerobic capacity and the extent of increase in the RT. Nine healthy subjects performed a simple manual RT task for the peripheral visual field at rest, during exercise on a cycle ergometer, and immediately after exercise. After warm-up exercise, the subjects cycled at 40 W for 3 min, increasing by 40 W every 3 min until 240 W in a step-wise manner. During incremental exercise, RT measurements were performed 1 min and 30 s after the start of every increase in workload. The RT for the peripheral visual field significantly increased at exercise intensity above VT, as compared with at rest. The increase in the RT, which was calculated by subtracting the RT at rest from the RT at 240 W, negatively correlated with maximal oxygen uptake ( O-2max) for each subject (r = -0.73, P < 0.05). It is likely that high aerobic capacity attenuates the increase in the RT for the peripheral visual field during exhaustive exercise.