低強度運動が脳波に及ぼす影響

概要

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It has been reported that physical exercise influences metabolic and affective states in individual fatigue. And the American College of Sports Medicine and the Centers for Disease Control and Prevention (ACSM-CDC) developed a physical activity recommendation geared toward getting more people active. This study was designed to examine the changes in electroencephalography (EEG) after low intensity acute exercise below ventilatory threshold (VT) level. Eleven healthy males, mean age 22.0 (SD 1.48) years, were examined under the VT level for 20 minutes after the submaximal exercise pretest to determine the VT level. EEG, electrocardiogram (ECG), respiratory curve and eye movement measurements were performed for 15 minutes before and after the experimental state. The EEG signals were recorded from Cz, Pz, O 1 and O 2 (10-20 system) and the ECG signals were also recorded throughout the experiment state. Spectral analysis using the maximum entropy method (MEM) for the EEG was applied for 5 minutes just before (pre) and after (post) experimental condition. Post/pre ratios were calculated, after the power spectral density (PSD) and relative percentage for total spectral power (relative time percent : Time%) of delta (0.5-4 Hz), theta (4-8 Hz), alpha 1 (low alpha : 8-11 Hz), alpha 2 (high alpha : 11-14 Hz), beta 1 (low beta : 14-20 Hz), beta 2 (high beta : 20-30 Hz) and total waves (0.5-30 Hz) in EEG were analyzed. In the low intensity acute exercise, total and low alpha wave band of PSD were increased same as high intensity exercise. Beta wave band of Time% was increased at Cz, and decreased at O 1 and O 2. Alpha PSD at O 1 and O 2 were higher than the other placements. These results suggest that the composition of EEG frequency bands changed after low intensity acute exercise and the appearance of alpha and beta wave bands were different at the each placement.
北翔大学の論文
2003-03-20

著者

佐々木浩子
北海道浅井学園大学

低強度運動が脳波に及ぼす影響

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