• Journal of Nutrition and Health
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• 제36권9호
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• pp.918-923
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• 2003

L-theanine Is an amino acid in green tea and has been known to decrease serotonin and increase norepinephrine in rat brains, and also reported to produce mental relaxation, lower blood pressure and improve learning ability in human beings. But, few studies on these effects for human beings have been conducted so far. This study was conducted to evaluate the effect of L-theanine on the release of brain alpha waves known to be related with mental relaxation and concentration. Twenty healthy male volunteers aged 18 to 30 years without any Physical and Psychological diseases were recruited through written advertisement. Alpha power values of EEG as a surrogate marker of mental relaxation and concentration were measured in frontal and occipital regions for 40 minutes after administration of four placebo or test tablets and 20 minute resting period. The same procedure crossed over at 7-day intervals. We analyzed average alpha power values in frontal and occipital regions at 10 minute intervals. Repeated ANOVA revealed that there were significant differences of occipital alpha power values between placebo and test groups with high anxiety (p < 0.05). The mean values at 20,30,40,50 and 60 minute intervals were 0.23, 024, 0.28, 0.25 and 0.34 in placebo, respectively and 0.23, 0.29, 0.40, 0.34, and 0.45 in test, respectively. But there were no significant differences of frontal and occipital alpha power values between placebo and test groups with low anxiety (p > 0.05) . The results of this study suggest that L-theanine containing tablets promote the release of alpha waves related to mental relaxation and concentration in young adult males.

• 한국산학기술학회논문지
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• 제11권9호
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• pp.3284-3288
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• 2010

이 연구는 이(耳)봉요법이 청소년기의 뇌기능변화에 어떤 영향을 주는지 분석하고자 하였다. 이를 위해 경기도 남부지역에 있는 청소년 41명을 대상으로 실험군 21명, 비교군 20명으로 분류하여 2009년 11월7일부터 12월14일까지 실험을 실시하였으며 이봉요법의 사전사후 측정 결과를 대응표본 t-검정으로 통계처리 하였다. 그 결과, 정신적 이완과 관련하여 산만도지수에서 유의미한 결과가 나타났다. 이로써, 이(耳)봉요법이 청소년기의 뇌기능변화 가운데 정신적 이완에 효과가 있음을 확인하였다.

• 대한예방한의학회지
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• 제10권2호
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• pp.11-17
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• 2006

TIn the study of Yangseng(養生) and Relaxation therapy, the results were as follows : According to the traditonal oriental medical theory, Oriental medicine focused on Yangseng(養生). Especially vital-energy is able to resist the disease and adapt to the environment and assist the healing of the body. Relaxation theraphy is a kind of Qigong. And it is not only breathe, but also accumulate the vital energy in the body, Which is also called "genuine qi(眞氣)" or "internal qi(內氣)." The therapy is based on controlling of Sprit(神), Breathing(呼吸), Mind(心). And it is in harmony with Qi-circulation(氣-循環), so smoothing the circulation of meridians, strengthened Essential-material(精), Qi(氣), Sprit(神). The Relaxation theraphy made the body and mind relaxed, and it is helpful of preventation of disease and mental health. And it treats neurosis, somatoform disease, it uses main or helpful therapy of various disease, elevates health mental concentration. And it is more effective by application of music, aroma, taping, psycho-therapy.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권12호
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• pp.3943-3959
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• 2022

People are constantly exposed to stress and anxiety environment, which could contribute to a variety of psychological and physical health problems. Therefore, it is particularly important to identify psychological stress in time and to find a feasible and universal method of stress reduction. This research investigated the influence of different music, such as relaxation music and natural rhythm music, on stress relief based on Electroencephalogram signals. Mental arithmetic test was implemented to create a stressful environment. 23 participants performed the mental arithmetic test with and without music respectively, while their Electroencephalogram signal was recorded. The effect of music on stress relief was verified through stress test questionnaires, including Trait Anxiety Inventory (STAI-6) and Self-Stress Assessment. There was a significant change in the stress test questionnaire values with and without music according to paired t-test (p<0.01). Furthermore, a model based on Transformer for stress level classification from Electroencephalogram signal was proposed. Experimental results showed that the method of listening to relaxation music and natural rhythm music achieved the effect of reducing psychological stress and the proposed model yielded a promising accuracy in classifying the Electroencephalogram signal of mental stress.

• 한국게임학회 논문지
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• 제2권1호
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• pp.77-83
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• 2002

의료분야에 게임이 적용되는 사례가 늘고 있다. 본 게임은 게임을 즐기는 사용자의 심박동의 미세한 변화(HRV:heart rate variability)를 파형분석하여 MP(mental stress)와 PH(physical stress) 상태를 모니터링한 후 호흡(respiration)의 조절을 통해 자율신경체계의 질병을 예방하기 위한 목적으로 개발되었다. 기존의 지속적인 반복작용을 통한 단순한 트레이닝이 아닌 게임고유의 특징인 상호작용성(interaction)을 높여 사용자가 지루함이나 거부감을 느끼지 않고 접근이 용이한 스트레스이완프로그램(SRP:stress relaxation program)이라는데 의미가 있다.

• 한국식품영양과학회:학술대회논문집
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• 한국식품영양과학회 2001년도 International Symposium on Food,Nutrition and Health for 21st Century
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• pp.38-47
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• 2001

L-theanine is a unique amino acid, found almost solely in tea plants. It is the main component responsible for the exotic taste of green tea. In our studies of L-theanine, we have found a variety of biological activities including relaxation and the alleviation of PMS. In general, animals generate very weak electric pulses on the surface of the brain, called brain waves. Brain waves are classified into four types, namely $\alpha$, $\beta$, $\delta$ and $\theta$-waves, based on their frequency. Brain waves correlate with individual mental conditions. For example, generation of $\alpha$-waves is considered an index of relaxation. In human volunteers, $\alpha$-waves were generated on the occipital and parietal regions of the brain surface within 40 minutes after the oral administration of 50 or 200 mg Suntheanine$^{TM}$ without causing drowsiness. Premenstrual Syndrome (PMS) is a symptom unique to women which appears in the luteal phase from the ovulation period through the first day of menstruation. It possesses characteristics of having a peak just prior to menstruation and disappearing 1 - 2 days following the start of menstruation. Symptoms of PMS are generally categorized as mental, physical and social symptoms. When comparing the reported Symptoms of PMS by the methods of MDQ score, the Suntheanine$^{TM}$ group was found to have a lower incidence of PMS symptoms, including physical, mental and social symptoms. Overall, a significant alleviation of PMS symptoms by the administration of 200 mg Suntheanine$^{TM}$ was observed. With the successful industrial production of L-theanine, we are now able to supply Suntheanine$^{TM}$, offering a tremendous opportunity for designing functional foods targeting relaxation and the alleviation of PMS.

• 정신신체의학
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• 제9권1호
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• pp.93-102
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• 2001

이완반응은 갚은 휴식상태를 말하며, 소위 스트레스반응으로 불리는 투쟁-도피 반응의 생리적 변화와 반대되는 생리적 변화를 일으키게 된다. 따라서 인위적으로 이완반응을 일으킴으로써 이러한 스트레스 반응을 상쇄시킬 수 있다. 이러한 이완반응을 일으킬 수 있는 복식호흡, 명상, 점진적 근육이완기법, 자율이완훈련, 생체되먹이기법 등의 다양한 이완기법들이 제시되어 왔으며, 이들은 다양한 신체, 정신 질환뿐만 아니라 정상적인 스트레스 관리 프로그램에 있어서도 마음과 신체의 안녕을 위해 유익한 도움을 줄 수 있음이 알려져 있다. 이러한 이완기법들은 스트레스 관리를 위한 전체적 과정의 한 부분으로 이해되어야 할 것이며, 자신에 맞는 적절한 기법을 찾아 지속적인 훈련을 함으로써 효과적인 스트레스 관리 방법으로서의 역할을 할 수 있을 것이다. 이에 본 저자는 명상, 점진적 근육이완기법, 자율이완훈련 및 기타 이완기법에 대한 보다 구체적이고 실제적인 방법을 제시하고자 한다. 스트레스와 관련된 다양한 신체, 정신 질환들에 대한 치료적 접근을 함에 있어서, 전통적 치료 방법에 병합하여 이완기법을 사용함으로써 스트레스와 질병 사이의 조절자로 이용할 수 있을 것이다.

• 동의신경정신과학회지
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• 제10권2호
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• pp.127-133
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• 1999

In the study of the Relaxation therapy of Qi-gong, the results were as follows: 1. Although there are various ways to practice qigong, the following three elements should always be included. There are regulation of mind, body and respiration, among which regulation of mind is the most important one. Regulating the mind into a state of tranquility. is the most fundamental skill in qigong therapy. So smoothing the circulation of meridians, strengthened Essential-material(精), Qi(氣), Sprit(神). 2. The Qigong therapy makes the body and mind relaxed, and it is helpful of preventation of disease and mental health. And it treats neurosis, somatoform disease, and it uses resoluton of stress. As a result, The Qigong-therapy is preservation of health, raises the resistance of disease. 3. The Qigong therapy is more effective by application of music, aroma, taping-therapy.

• 한국식품영양과학회:학술대회논문집
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• 한국식품영양과학회 2001년도 International Symposium on Food,Nutrition and Health for 21st Century
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• pp.48-49
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• 2001

• 감성과학
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• 제12권3호
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• pp.341-350
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• 2009

양궁의 슈팅과정에 대하여 정신 집중력과 긴장 이완도를 뇌파를 이용하여 평가하였다. 정신 집중과 긴장 이완 수준의 평가는 집중과 명상 알고리즘을 이용하여 수행되었다. 우수, 중급, 그리고 초급 양궁선수들이 야외 양궁장에서 근거리와 장거리 타깃을 대상으로 슈팅 훈련을 할 때 앞이마(Fp1)에 전극을 부착한 헤드밴드 형태의 휴대용 뇌파 시스템으로 뇌파를 기록하였다. 개인별로 기록된 뇌파는 집중과 명상 알고리즘을 이용하여 실시간으로 정신집중과 긴장이완 수준이 계산되었으며, 슈팅 과정에서 정신집중과 긴장이완 수준의 변화 형태가 분석되었다. 개인별로 각각의 슈팅에 대한 정신집중 및 긴장이완 수준 변화는 네 유형으로 분류되었으며, 이 변화 유형은 양궁 선수들의 경기력을 평가하는 신뢰성 있는 지표로 나타났다. 우수 선수의 경우 정신 집중과 긴장이완 수준이 슈팅과정의 진행에 따라 동시에 증가하는 형태로 나타났으며, 중급 선수의 경우 정신 집중도는 증가하는 반면 긴장 이완 수준은 감소하는 결과를 보여 주었다. 실시간으로 제공되는 정신 집중과 긴장 이완 수준의 변화는 양궁 선수들의 경기력 평가뿐만 아니라 훈련 시에 유익한 피드백이 되었다.