• Journal of Acupuncture Research
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• 제27권2호
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• pp.51-58
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• 2010

Objectives : The purpose of this study was to assess the effect of $PC_6$ moxibustion treatment for reducing mental stress using power spectrum analysis of the heart rate variability(HRV). Methods : 20 healthy volunteers(simple rest group : 10, moxibustion treatment group : 10) participated in this study. After instrumentation and 5-minutes rest period, mental stress by operation was provided for 5-minutes. HRV was recorded before and after the mental stress. And then the simple rest group rested for 15-minutes. The moxibustion treatment group was treated by $PC_6$ moxibustion and rested for 15-minutes. And then HRV was recorded. Results : In simple rest group, LF norm and HF norm showed a significant change after mental stress. In moxibustion treatment group, LF, HF, LF norm, HF norm and LF/HF showed a significant change after mental stress. But there were no significant difference between two groups(p>0.05) except HF. In moxibustion treatment group, LF, LF norm, HF norm and LF/HF showed a significant change after moxibustion treatment. There were significant differences between two groups(p<0.05). Conclusions : The result suggests that $PC_6$ moxibustion treatment can regulate and prevent the alteration of autonomic nerve system by mental stress.

• 대한한방부인과학회지
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• 제32권4호
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• pp.25-38
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• 2019

Objectives: The purpose of this study is to analysis differences of heart rate variability (HRV), body composition, digital infrared thermal imaging (DITI), and electro pulse graph by whether there are some causes of dysmenorrhea or not. Methods: We studied 89 patients who took at least one test among HRV, Body composition, DITI, and electro pulse graph visiting Kyung Hee University Hospital at Gangdong from March 1, 2014 to May 7, 2019. Results: There were statistically significant differences in Low frequency (LF), LF norm and High frequency norm (HF norm) of HRV between primary dysmenorrhea patients and secondary dysmenorrhea patients. There were statistically significant differences in Body Mass Index (BMI) and body fat percentage of Body composition between two groups. But both BMI were included in normal range. There were no statistically significant difference in DITI results. And there was significant difference of Estimated circulation resistance (ECR) between two groups. Conclusions: The results suggest that hormone imbalance of secondary dysmenorrhea patients can affect HRV results. And because of high ECR, phlegm pathology can be more considered in secondary dysmenorrhea patients. Further study should be conducted to confirm the results of body composition and DITI differences.

• 한방비만학회지
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• 제12권2호
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• pp.8-16
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• 2012

Objectives: This study is designed to report the correlation between Body Mass Index(BMI), Heart Rate Variability(HRV), stess, drinking alcohol, coffee and smoking. Methods: From 1st January 2010 to 31st December 2012, We tested on 458 patients who hospitalized in Cheong Yeon Korean Medicine Hospital for reducing their weights, then we collected the statistical analysis with the result of their HRV and the special survey. Results: This experiment was studied on total 458 patients, 27 were men and 431 were women. The average of the age of men was $28.23{\pm}4.22$ and $24.31{\pm}385$ was women. There were significant differences in BMI, Low frequency(LF), High frequency(HF), stress score, frequency of drinking alcohol, smoking and drinking coffee followed by their ages. When we looked at the correlation between obesity with smoking and drinking coffee, we can see that the BMI increased, the frequency of drinking alcohol was decreased, however there were no statistic correlation in smoking and drinking coffee with BMI. Conclusions: With the result of HRV, we can suggest the BMI and stress score are correlated each other but we need further studies about passive stress relief by taking favourite food such as drinking alcohol, smoking, drinking coffee, etc.

• Psychiatry investigation
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• 제15권12호
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• pp.1168-1173
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• 2018

Objective After the Sewol ferry disaster, bereavement with suicidal ideation was a critical mental health problem that was accompanied by various neuropsychological symptoms. This study examined the frontal alpha asymmetry (FAA), heart rate variability (HRV), and several psychological symptoms in bereaved family members (BFM) after the Sewol ferry disaster. Methods Eighty-three BFM after the Sewol ferry disaster were recruited. We assessed FAA, HRV, and psychological symptoms, including depression, post-traumatic stress, post-traumatic growth factor, anxiety, grief, and positive resources, between BFM with the presence and absence of current suicidal ideation. Results Compared to BFM without suicidal ideation, BFM with suicidal ideation showed a higher FAA with right dominance. Significant differences in psychological symptoms were observed between the groups. In BFM with suicidal ideation, the low: high frequency (LF:HF) ratio correlated with social resources and support. Conclusion The FAA and LF:HF ratio may be biomarkers that represent the pathological conditions of BFM with suicidal ideation. If researched further, they may shed light on the interaction between bereavement with suicidal ideation and social resources for therapeutic intervention.

• 정신신체의학
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• 제28권1호
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• pp.81-88
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• 2020

연구목적 이 연구는 심박변이도(Heart rate variability, HRV) 지표를 이용하여, 불안장애, 우울장애, 외상 및 스트레스 관련 장애의 차이를 비교하고 증상 심각도와의 연관성을 보고자 한다. 방 법 2017년부터 2018년까지 국립정신건강센터 스트레스 클리닉 내원 환자의 후향적 의무기록을 분석하였다. 총 473명 환자(불안장애 166명, 우울장애 184명, 외상 및 스트레스 관련 장애 123명)의 HRV 지표의 진단 군간 차이를 비교하였다. 또한 지표와 전반적 임상 인상 심각도(Clinical Global Impression-Severity Scale, CGI-S)의 연관성이 진단군에 따른 차이를 보이는지 분석하였다. 결 과 세 군에서 HRV 지표는 유의한 차이를 보이지 않았다. 그러나, 심박도 간격(normal-to-normal, NN)의 표준 편차(standard deviation of normal RR intervals, SDNN)와 연속된 NN 간격들의 변이의 제곱 평균값의 루트 값(the square root of the mean squared differences of successive NN intervals, RMSSD)의 CGI-S와의 관련성은 그룹 간 유의한 차이가 나타났다(SDNN, p=0.017 ; RMSSD, p=0.034). 불안장애와 우울장애에서는 CGI-S에 따른 SDNN, RMSSD가 음의 관련성을 보였지만, 외상 및 스트레스 관련 장애에서는 양의 관련성을 보였다. 결 론 본 연구에서 세 군의 HRV 지표는 차이를 보이지 않았지만, 각 군에서 지표와 임상적 심각도와의 연관성은 다른 양상을 보였다. 본 연구 결과는 외상 및 스트레스 관련 장애군은 HRV의 특징 및 임상적 활용이 불안 및 우울장애와 다를 수 있음을 시사한다.

• 동의신경정신과학회지
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• 제17권2호
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• pp.133-145
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• 2006

Objective : The purpose of this experimental-controlled study was to investigate the characteristics of the autonomic nervous system in students with Keongke by using HRV(Heart rate variability) and PSV(Pupil size variability). Method : The study group was consisted of 11 students with self recognition as the experimental group, and 25 normal students as the control group. Informations on gender and age were obtained by medical charts and personal interviews. By using heart rate variability and pupil size variability, we measured the value of HRT(Heart rate), SDNN(Standard deviation of NN intervals), LFnorm(Low frequency normalization), HFnorm(High frequency normalization), LF/HF ratio, Pupil area, B.S.(Basic size), C.R.(Max Constriction Rate) and 1s.d.(1sec Dilation Rate). I compared the degrees of the sympathetic and parasympathetic activity. Result : 1. In the result of heart rate variability between experimental and control group, none of the parameters of experimental group were significantly different from control group. And even though there were no statistical significance, there were some numerical differences in SDNN, LF norm, HF norm. 2. In pupil size variability, C.R. and 1s.d. of the experimental group were increased compared to control group. Conclusion : The study results suggest that the group with Keongke has differences of autonomic nervous system as compared to those in normal state. Measurement value of PSV is a new technical approach to estimate the autonomic nervous system.

• 전기학회논문지
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• 제66권3호
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• pp.581-586
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• 2017

The well-known Integral Pulse Frequency Modulation (IPFM) cardiac oscillator has been used to generate the heart beat fluctuations as a representation of the modulatory autonomic nervous activity in terms of sympathetic and parasympathetic state. The IPFM model produces heartbeats by integrating the modulated sinusoid signals and applying the threshold of unity or chaotic threshold levels. This study aims at evaluating the performance of IPFM model by analyzing the influence of the threshold level with comparatively applying preset threshold of unity and Logistic-map and Henon-map chaotic-threshold. Based on our simulated results with interpreting the spectral features of Heart Rate Variability (HRV), we can conclude that the IPFM model with preset threshold level of unity can generate the optimal heartbeat variations int the sense of clinically valid heartbeats.

• 전기학회논문지
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• 제64권5호
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• pp.799-804
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• 2015

This study aims at the new analysis of heart beat fluctuations by applying physiological Heart Rate Variability Model with representing the cardiac control system in sympathetic and parasympathetic-coupling oscillator constants, C_s and C_p. To find the effects of coupling constants on the beat-to-beat fluctuations, Integral Pulse Frequency Modulation (IPFM) model is adopted to generate the time series data of ECG R-peaks and represent them by poincaré scattergram plot in the time domain and HRV in the frequency domain, respectively. The actual poincaré plots and HRV spectrum are also analyzed by acquiring the experimental data from the subjects exposed to the emotional-stress invoking environment and the function of the coupling constants are verified in terms of antagonism in sympathetic and parasympathetic activity.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1997년도 추계학술대회논문집
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• pp.473-476
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• 1997

Human visual emotion were investigated by analyzing HRV from ECG signals, which were varied by the visual stimuli. In this paper, twelve university students experienced visual emotion by pictures from IAPS. ECG and subjective rating were obtained for human emotion evaluation. For determination of HRV, ECG was extracted into HF and LF via power spectrum analysis. The results showed that HRV is good for discrimination between positive and negative emotions.

• 한국직업건강간호학회지
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• 제17권2호
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• pp.250-259
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• 2008

Purpose: The purpose of this study was to identify the relation of Job Stress, Heart Rate Variability, Blood Pressure and Lifestyle on White-Collar Workers. Method: Data were collected from August to December in 2007. HRV was measured using Freeze-Framer. WSRI and Lifestyle data were collected from the self-reported questionnaire. Result: 1) Total score of WSRI was 32.88, H score was 47.92, L score was 16.90, systolic blood pressure was 138.88mmHg, diastolic blood pressure was 81.20 mmHg. 2) WSRI correlated with L score of HRV, BP, smoking, drinking positively. WSRI correlated with H score, exercise times negatively. H correlated with exercise positively and had negative correlation with BP and L. Systolic pressure correlated with smoking and drinking positively. Conclusion: WSRI, HRV, BP and lifestyle are interrelated strongly and they need to be monitor continually. It is considered that education of health and intervention with HRV make white-collar workers concern more about their health and care.