JAPANESE JOURNAL OF BIOMETEOROLOGY
Online ISSN : 1347-7617
Print ISSN : 0389-1313
ISSN-L : 0389-1313
Volume 60, Issue 1
Displaying 1-5 of 5 articles from this issue
Special Feature: Relationships between climate changes and health
Special Feature: Relationships between climate changes and health Original Articles
Original Article
  • Keiko Yamamoto, Minami Hirai, Manabu Shibasaki
    2023 Volume 60 Issue 1 Pages 23-30
    Published: July 30, 2023
    Released on J-STAGE: January 20, 2024
    JOURNAL FREE ACCESS

    Exercise performance is modulated by various factors, such as physical, environmental, and mental factors. Therefore, during exercise, the brain is continuously planning exercise strategies. The purpose of this study was to assess the brain activity associated with instantaneous exercise strategies using electroencephalographic event-related potentials (ERPs) and transcranial Doppler sonography (TCD). Eleven young volunteers performed three different workloads of isometric handgrip exercises with and without a warning stimulus (STM and WPM, respectively). The contingent negative variation (CNV) and mean middle cerebral artery blood velocity (MCAVmean) were evaluated by ERPs and TCD, respectively. The warning stimulus induced CNV and increased MCAVmean before the start of exercise. The increase in MCAVmean was greater at higher exercise intensity, but the amplitude of CNV didn't change. The amplitudes of CNV and MCAVmean were similar between tasks of different difficulty levels. These findings suggest that MCAVmean measured with TCD could evaluate minute change of brain activity associated with movement strategies.

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