title: Differential influences of exercise intensity on information processing in the central nervous system.
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.
authors.affiliation: Doctoral Program in Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan. kamijo@seiri.taiiku.tsukuba.ac.jp
authors.forename: Keita
authors.initials: K
authors.lastname: Kamijo
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nishihira
authors.forename: Arihiro
authors.initials: A
authors.lastname: Hatta
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kaneda
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Wasaka
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Kida
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kuroiwa
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology; D004569:Electroencephalography; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods; D008297:Male; D005082:Physical Exertion / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*