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논문 기본 정보

자료유형
학술저널
저자정보
김성대 (한남대학교) 오명진 (백석대학교) 정일규 (한남대학교)
저널정보
한국사회체육학회 한국사회체육학회지 한국사회체육학회지 제72호
발행연도
2018.5
수록면
461 - 472 (12page)
DOI
10.51979/KSSLS.2018.05.72.461

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초록· 키워드

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Ingestion of the nonproteinic amino acid L-theanine (γ-glutamylethylamide) has been shown to influence oscillatory brain activity in the alpha band (8-13 Hz) in humans during resting electroencephalographic (EEG) recordings and also during incremental ergometer exercise. To our knowledge, there is no study using EEG·HRV to determine the combined effects of L-theanine ingestion plus exercise. The purpose of the study is to investigate the effects of L-theanine on alpha-band oscillatory brain activity during an incremental ergometer exercise. EEG data were recorded from twelve neurologically normal individuals (20.5±1.0years) while engaging in an incremental exercise task. Participants underwent testing on two separate days, ingesting either a 200-mg colorless and tasteless solution of L-theanine mixed with water, or a water-based solution placebo on each day in counterbalanced order. The parameters of heart rate variability were obtained from both time and frequency domain analysis of 5min ECG recording at rest, immediately after exercise, and recovery 15min. We compared the alpha-band activity measured in two conditions :when subjects ingested L-theanine vs. Placebo. The results were as follows. 1. Alpha power (absolute )of Fp2, F3, P3, and P4 region in L-theanine group was lower than that in placebo group at recovery 15min (<p.1). 2. Beta activity (relative) of T3·T 4 region in L-theanine group was higher than that in placebo group at recovery 15min (p<.1). 3. Analysis of HRV revealed a significant increase in sympathetic activity and a significant decrease in parasympathetic activity following ergometer exercise with no significant difference between both groups. These results suggest that L-theanine ingestion may have a different neurophysiological profile after incremental exercise compared to placebo.

목차

Ⅰ. 서론
Ⅱ. 연구방법
Ⅲ. 결과
Ⅳ. 논의
Ⅴ. 결론 및 제언
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ABSTRACT

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