Abstract
The influence of exercise intensity on information processing in the central nervous system was investigated using P300 and no-go P300 event-related potentials. Twelve subjects (22–33 years) performed a go/no-go reaction time task in a control condition, and again after high-, medium-, and low-intensity pedaling exercises. Compared to the control condition, P300 amplitude decreased after high-intensity pedaling exercise and increased after medium-intensity pedaling exercise. There was no change after low-intensity pedaling exercise. These results suggested that the amount of attentional resources devoted to a given task decreased after high-intensity exercise and increased after medium-intensity exercise. The findings also suggest that changes in P300 amplitude are an inverted U-shaped behavior of differences in exercise intensity. In addition, no-go P300 amplitude showed the same changes as P300 amplitude at different exercise intensities. This indicates that differences in exercise intensity influenced not only the intensity of processing the requirement for a go response, but also processing of the need for a no-go response. It is concluded that differences in exercise intensity influenced information processing in the CNS.
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This study was supported by the Nishihira/Tsukuba Project of Center of Excellence from the Japan Ministry of Education, Culture, Sports, Science, and Technology.
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Kamijo, K., Nishihira, Y., Hatta, A. et al. Differential influences of exercise intensity on information processing in the central nervous system. Eur J Appl Physiol 92, 305–311 (2004). https://doi.org/10.1007/s00421-004-1097-2
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DOI: https://doi.org/10.1007/s00421-004-1097-2