• 통합자연과학논문집
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• 제12권3호
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• pp.74-77
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• 2019

The purpose of this study is to explore the effects of Chamaecyparis obtusa essential oil on the activity of autonomic nervous system. Heart rate variability (HRV), as an indicator of autonomic nervous system activity and blood pressure were measured before and after inhalation of Chamaecyparis obtusa essential oil. The systolic blood pressure was decreased by inhalation of Chamaecyparis obtusa essential oil (p<0.05). The diastolic blood pressure was not changed significantly by Chamaecyparis obtusa. High frequency (HF) power level was not changed but High frequency/Low frequency (HF/LF) ratio was decreased by Chamaecyparis obtusa essential oil (p<0.05), meaning that parasympathetic nervous system activity was not affected but sympathetic nervous system activity was decreased. These results indicate that Chamaecyparis obtusa essential oil has a modulatory effect on the autonomic nervous system activity.

• 동의생리병리학회지
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• 제19권5호
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• pp.1191-1194
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• 2005

The aim of this study was to investigate the change of Heart Rate Variability(HRV) that mild cold stimulus on the forehead of healthy men induces. 34 healthy male subjects participated in the experiments. On the first test series, 15 subjects were applied to the mild cold stimulus by the devise for cold stimulation. In the second test series, 10 subjects With heat Syndrome and 5 subjects With cold Syndrome were applied to the mild cold Stimulus. Aa a additional test, 4 subjects with cold syndrome were applied to the warm stimulus in the last test series. We analyzed the HRV through measuring electrocardiogram.(ECG). The result of this study is comparatively clear. In the first test series, mild cold stimulus made parasympathetic nervous system be activated. In the second test series, mild cold stimulus made parasympathetic nervous system be activated both in subjects with heat syndrome and subjects with cold syndrome, and heat syndrome shows more active parasympathetic nervous system rather than cold syndrome subjects do. In the last test series, 2 subjects with cold syndrome respond the mild cold stimulus. That means warm stimulus of cold condition subjects made parasympathetic nervous system active in 2 of 4 subjects. We found out that mild cold stimulus on forehead makes parasympathetic nervous system be activated in healthy male, and it can be interpreted that mild cold stimulus make healthy human be relaxed. Also, subjects have different fondness of thermal stimulus according to their Cold or Heat condition Preferences. Last test series shows that we need to investigate effect of the warm stimulus heat syndrome subjects.

• Journal of Acupuncture Research
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• 제28권1호
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• pp.109-115
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• 2011

Objectives : This review is to summarize and assess the effects of acupuncture on parasympathetic nervous system(PNS). Methods and Materials : We searched two electronic databases (CNKI, PubMed) for the articles published until Oct. 2010. The randomized clinical trials (RCTs) and uncontrolled clinical trials (UCTs) were considered to be reviewed. We selected four RCTs, seven UCTs and one article which conducted both RCT and UCT, and reviewed them. The quality of RCTs was also assessed with Cochrane criteria. Results : There were four RCTs which reported acupuncture enhanced PNS, and one RCT reported acupuncture reduced PNS. Four UCTs reported acupuncture enhanced PNS, three UCTs reported acupuncture reduced PNS and one UCT reported there was no remarkable change of PNS after acupuncture. Conclusions : Although the majority of reviewed articles showed acupuncture enhance PNS, it is hard to conclude clearly how acupuncture affects PNS due to insufficient quality of trials. Therefore, more trials with strict condition need to be conducted to obviously identify the effects of acupuncture on PNS.

• Physical Therapy Rehabilitation Science
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• 제10권2호
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• pp.141-146
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• 2021

Objective: This study was at investigated the effects of manual lymphatic drainage (MLD) on stress and pain in patients with postoperative breast cancer. Design: A randomized controlled trial. Methods: A total of twenty-two patients with postoperative breast cancer voluntarily participated in the study. Subjects were randomly assigned to the MLD groups (n=12) and rest groups (n=12). The intervention was conducted in each group for twenty minutes a day, five times a week, for four weeks. Before and after the intervention, the participants measured sympathetic nerve, parasympathetic nerve, and pain by using a sphygmograph and short-form McGill pain questionnaire.An independent t-test was used to analyze pretest and posttest changes between the groups, a paired t-test was used to analyze pre-posttests within each group. Results: After analyzing, the MLD group has been shown a significant decrease in the sympathetic nervous system (p<0.05), a significant increase in the parasympathetic nervous system (p<0.05), and a significant increase in pain (p<0.05). However, the rest group was no significant difference between pre and post. Conclusions: The results of this study confirmed that MLD techniques are an effective method in reducing stress and pain in patients with postoperativebreast cancer. And it is thought that can be used as basic data and to develop programs on stress and pain management reduction for patients with breast cancer.

• 동의생리병리학회지
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• 제29권5호
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• pp.409-415
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• 2015

This study compared the heart rate variability tests of healthy college students and chronic fatigue patients for 2 years. Study subjects were idiopathic chronic fatigue patients who carried out the HRV tests and students conducted HRV test when health screening test. Study subjects were 250 people, 104 people and men (41.6%), women were 146 patients (58.4%). In patient group, the autonomic nervous system activity was decreased, the activity of the sympathetic nerve and the parasympathetic nerve were significantly reduced compared to the control group(Patient:84.17±16.27, Control:98.33±17.28). Regardless of gender, patient group's autonomic nervous system activity was decreased, the activity of the sympathetic nerve and the parasympathetic nerve were significantly reduced, compared to the control group(Patient Female:84.17±16.27, Patient Male:84.07±14.96/Control Female:98.33±17.28, Control Male:96.45±16.92). Even though same ages, patient group's autonomic nervous activity was reduced compared to control group(Patient:89.36±12.43, Control:97.39±16.91). Fatigue patients' activity of the sympathetic nerve and the parasympathetic nerve were significantly reduced, regardless of the fact that activity of the sympathetic nerve is increased and the parasympathetic nerve is decreased in stress state like an impassioned injury(七情傷). Therefore HRV test is useful to diagnose Fatigue from this study.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.176-178
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• 1997

We are exposed to the various types of external stimuli, and many researches have been conducted to analyze the emotional changes to the stimuli quantitatively. In this paper, changes of human emotion was studied by analyzing HRV from ECG signals which were varied by the auditory stimulus. Power contents for each frequency bands were calculated from HRV waveforms. Two peak values representing autonomic nervous system status, HF and LF, were used to extract the parameters. An analysis on the normalized HF/LF to the subjective rating of the subject were performed. It was assumed that the positive emotional changes evoked by the auditory stimuli, the HF values representing activation of the parasympathetic nervous system, are increased much higher than the LF values, activation of the sympathetic nervous system. Results showed that the parasympathetic nervous system works more actively than the sympathetic nervous system to the stimuli which cause the positive emotional changes.

• The Korean Journal of Pain
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• 제35권3호
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• pp.327-335
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• 2022

Background: The pathophysiology of fibromyalgia (FM) involves many mechanisms including central nervous system sensitization theory, autonomic nervous system (ANS) dysfunction, and recently small fiber neuropathy. While the small fiber neuropathy itself can cause ANS dysfunction and neuropathic pain (NP), it is still unknown whether ANS problems have an association with severity of disease and NP in patients with FM. The aim of this study was to evaluate ANS dysfunction in FM patients and to explore possible associations of ANS dysfunction with disease severity and NP. Methods: Twenty-nine FM patients and 20 healthy controls were included in this cross-sectional study. Participants were tested using sympathetic skin responses (SSR) and R-R interval variation analyses for sympathetic and parasympathetic ANS dysfunction, respectively. Disease severity and somatic symptoms of patients with FM were evaluated using the ACR-2010 scales and Fibromyalgia Impact Questionnaire, and NP symptoms were evaluated using the Pain Detect Questionnaire and Douleur Neuropathique questionnaire. Results: FM patients were found to have ANS dysfunction characterized by increased sympathetic response and decreased parasympathetic response. SSR amplitudes were found to be correlated with a more severe disease. Although nonsignificant, NP severity tended to be associated with a decrease in sympathetic and parasympathetic activities. Conclusions: ANS dysfunction may play a role in the pathophysiology of FM. The trend of decreased ANS functions in FM patients exhibiting NP contradicts the notion that FM is a sympathetically maintained NP and may be explained with small fiber involvement.

• 감성과학
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• 제14권4호
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• pp.653-662
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• 2011

최근 3D TV 보급과 확산에 따른 시각 피로문제가 대두되면서 시각 기능과 인지적 관점에서의 연구가 활발하다. 그러나 3D 시각피로가 자율신경계 기능에 미치는 영향에 대한 연구는 미비하다. 따라서 본 연구에서는 3D TV 시청으로 유발되는 3D 시각피로가 자율신경계 기능에 미치는 영향과 이 영향이 교감 및 부교감 신경계와 심혈관계 반응에 미치는 영향을 확인하고자 한다. 피험자는 20 대 남녀 대학생 15 명(남 6 명, 여 9 명, 평균나이 22.53 세 ${\pm}$ 2.55 세)을 대상으로 하였다. 피험자는 편안한 의자에 앉아 3D TV를 1시간 시청하였다. 3D TV 시청 전과 후의 1분간 맥파(PPG, Photo-PlethysmoGram)를 측정하였고 주관설문을 실시하였다. 측정된 신호에서 SDNN (standard deviation of RR intervals), RMS-SD(root mean square successive difference), HF/LF ratio, Ln(LF), Ln(HF)를 추출하여 교감 및 부교감 신경계, 그리고 심혈관계 반응을 확인 하였다. 연구 결과 HF/LF ratio, Ln(LF), Ln(HF)는 시청 후에 유의하게 감소하였고, SDNN, RMS-SD는 통계적 유의차를 확인할 수 없었다. 이 결과는 3D 시각피로가 자율신경계 기능에 영향을 미치고 이로 인해 교감신경계가 항진되는 반응이 나타나며, 심박 변화율이 감소하는 결과를 초래할 가능성을 확인 하였다.

• 인간식물환경학회지
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• 제22권1호
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• pp.109-118
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• 2019

Physical activities in the forest environment stimulate the parasympathetic nervous system of humans and have positive effects on the autonomic nervous system as well as moods and emotions. However, there are almost no studies on the benefits of exercise in the forest environment for patients with myocardial infarction. The aim of this study was to investigate the effects of 15-minute single session walking by myocardial infarction patients in the forest and urban environment on the physiological and psychological states. The heart rate variability was measured in 10 patients with myocardial infarction to assess physiological state after single session walking for 15 minutes in the forest environment and urban environment. In order to evaluate the psychological state, a profile of mood scale (POMS) and semantic differential (SD) questionnaire were used. The results of this study showed that 15-minute single session walking in the forest environment activated the parasympathetic nervous system of adult myocardial infarction patients more than 15 minutes of single session walking in the urban environment, and also made them feel more positive in terms of the POMS and SD. Therefore, this study suggests that even single session walking in the forest environment can positively influence the physiological and psychological states of adult heart disease patients and may also contribute to health care.

• 대한의생명과학회지
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• 제23권3호
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• pp.286-289
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• 2017

This study was designed to clarify the effect of juniper essential oil on the autonomic nervous system. Blood pressure and heart rate variability (HRV) reflecting autonomic nervous system activity were measured. The systolic and diastolic blood pressure were decreased by inhalation of juniper essential oil. High frequency (HF) power level, an indicator of parasympathetic nervous system activity was increased in the stimulation of juniper essential oil. High frequency/low frequency (HF/LF) ratio, an indicator of sympathetic nervous system activity was decreased by the juniper essential oil. These results suggest that juniper essential oil has a modulatory effect on the autonomic nervous system activity.