인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
개인구독
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Purpose: The cerebral blood flow velocity (CBFV) response to acute hypoxia has been known to increase. But, how CBFV might respond to exercise in hypoxic condition and how it is associated with EEG remains unclear. The purpose of this study is to determine the effect of hypoxia on electroencephalographic activity during and after cycle ergometer exercise.
Method: In a randomized, double-blind, crossover study, twelve healthy volunteers (21.4±0.7yrs) were asked to perform the bicycle ergometer exercise twice in hypoxic condition and control (sea level) condition with a week interval, respectively. Exercise intensity was set initially at 50W and increased by 25W every 2 minutes until 125W, then maintained at 125W for 14 minutes. Acute normobaric hypoxic condition corresponding to the altitudes of 3150m was maintained using low oxygen gas mixture for the whole procedure of 60 minutes. EEG was measured prior to the onset of exercise, immediately after exercise and 20 minutes recovery. EEG signal was recorded from 6 scalp sites (frontal, temporal and occipital lobe of the international 10-20 system) leading to analysis of theta (4-7Hz), alpha (8-13Hz), beta (13-30Hz), and gamma(30-50Hz) relative activities. All data were analyzed using two-way ANOVA with repeated measures.
Results: Alpha wave activity of frontal lobe in hypoxia group was significantly lower than in control group immediately after exercise (0.24±0.13 vs. 0.41±0.15 ㎶, p<.05). Beta wave activity of occipital lobe in hypoxia group was significantly higher than in control group immediately after exercise (0.28±0.07 vs. 0.20±0.07 ㎶, p<.05). Gamma wave activity of frontal lobe in hypoxia group was significantly higher than in control group immediately after exercise (0.25±0.12 vs. 0.12±0.08 ㎶, p<.05). Theta wave activity of left frontal lobe in hypoxia group was significantly lower than in control group at 20 minutes recovery (0.08±0.05 vs. 0.15±0.05 ㎶, p<.05).
Conclusion: These results suggest that acute exposure to mild hypoxic condition may amplify the change of EEG activities which has been commonly observed during exercise.
Method: In a randomized, double-blind, crossover study, twelve healthy volunteers (21.4±0.7yrs) were asked to perform the bicycle ergometer exercise twice in hypoxic condition and control (sea level) condition with a week interval, respectively. Exercise intensity was set initially at 50W and increased by 25W every 2 minutes until 125W, then maintained at 125W for 14 minutes. Acute normobaric hypoxic condition corresponding to the altitudes of 3150m was maintained using low oxygen gas mixture for the whole procedure of 60 minutes. EEG was measured prior to the onset of exercise, immediately after exercise and 20 minutes recovery. EEG signal was recorded from 6 scalp sites (frontal, temporal and occipital lobe of the international 10-20 system) leading to analysis of theta (4-7Hz), alpha (8-13Hz), beta (13-30Hz), and gamma(30-50Hz) relative activities. All data were analyzed using two-way ANOVA with repeated measures.
Results: Alpha wave activity of frontal lobe in hypoxia group was significantly lower than in control group immediately after exercise (0.24±0.13 vs. 0.41±0.15 ㎶, p<.05). Beta wave activity of occipital lobe in hypoxia group was significantly higher than in control group immediately after exercise (0.28±0.07 vs. 0.20±0.07 ㎶, p<.05). Gamma wave activity of frontal lobe in hypoxia group was significantly higher than in control group immediately after exercise (0.25±0.12 vs. 0.12±0.08 ㎶, p<.05). Theta wave activity of left frontal lobe in hypoxia group was significantly lower than in control group at 20 minutes recovery (0.08±0.05 vs. 0.15±0.05 ㎶, p<.05).
Conclusion: These results suggest that acute exposure to mild hypoxic condition may amplify the change of EEG activities which has been commonly observed during exercise.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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UCI(KEPA) : I410-ECN-0101-2019-692-000500024
