• Title/Summary/Keyword: Physiological fatigue

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Evaluation of Pressure Distribution, Muscle Activity, and Subjective Comfort according to the Baby Carrier Type (아기 띠 종류에 따른 압력분포와 근활성도, 주관적 착용감 평가)

  • Lee, Heeran;Hong, Kyung Hwa
    • Journal of Fashion Business
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    • v.21 no.4
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    • pp.105-115
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    • 2017
  • Continuous lifting and carrying of babies constitutes a serious physical burden, leading to issues such as muscle fatigue and pain in child-care workers. However, there is a lack of research on the pressure and subjective comfort of baby carriers that are commercially available in the market. Therefore, this study was intended to determine the most comfortable and least burdensome type of baby carrier. This was done by analyzing muscle activity and pressure when subjects carried babies using three types of baby carriers. The types of baby carriers evaluated included a 'baby carrier of thin shoulder straps without back support band (X-type)', a 'baby carrier with a back-support band and without a hip sheet (H-type)', and a 'baby carrier with back support band and hip support (H-hip type). The subjective comfort of subjects wearing each type of baby carrier was investigated and compared to the objectively measured data. As a result, the X-type baby carrier showed the heaviest pressure on the shoulders and the subjective comfort was found to not be good. On the waist region, the H-type and H-hip type baby carriers showed significantly less muscle activation than the X-type baby carrier. However, subjects showed a stronger preference for the X-type baby carrier on the waist region, despite greater muscle activation. This appears to be because although the back-support band disperses the weight and thus improves physiological comfort; the wearers feel cramped and thus, lower their psychological comfort.

A Study on Evaluation of Thermal Environment using Heat Stress Indices for Deep Coal Mine in Korea (열적지표를 적용한 국내 고심도 석탄광산의 열환경 평가 연구)

  • Park, Seon-Oh;Roh, Jang-Hoon;Kim, Jin
    • Tunnel and Underground Space
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    • v.24 no.2
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    • pp.166-175
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    • 2014
  • In this study, the thermal environment in a large scale coal mine located in Taebaek, Gangwondo was assessed by a field survey. In order to estimate the thermal environment, various heat stress indices such as WBGT, HSI, ESI, KATA index and effective temperature were investigated. Correlation analysis was also conducted. It was found that the thermal environment in most workplace was high. In particular, the correlation coefficient between HSI reflected in physiological fatigue characteristic and the maximum sweat evaporation heat was -0.834. This shows that the correlation coefficient have the most influence on HSI index. The factor which has the most influence on the maximum sweat evaporation heat is velocity of air. The thermal environment of high-depth coal mines is likely to be improved by installing a structure that enables the maximum prevention of extended digging, air doors, or the leakage of the inflow of air in the first shaft.

Effects of the BUDDEUMI Therapy on the Relief of Shoulder Pain among Middle Aged Women (중년여성의 견갑통 통증완화를 위한 부항과 뜸 겸용요법의 적용효과)

  • Kim, Yi-Soon;Kim, Kwuy-Bun;Kim, Gyeong-Cheol;Kim, Young-Hee
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.5
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    • pp.1172-1177
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    • 2009
  • This study is to determine the effects of BUDDEUMI(moxibustion and cupping a boli) therapy on the relief of shoulder pain among middle aged women. methods : A total of 39 middle aged women with shoulder pain are selected : 20 in the experimental group and 19 in the control group. The data was collected by using questionnaires. The BUDDEUMI(moxibustion and cupping a boli) therapy on the should and back was administered to the experimental group, and no treatment was given to the control group. All of the subjects were examined on a subjective symptom scale and on the grade of discomfort and pain in everyday life as developed by Japan's Industrial Fatigue Research Committee of the Industrial Hygienics Society(1988), Sohn, Mong Ho(1999), Visual Analogue Scale as developed by Cline (1992). SPSS/win 12.0 was used for Date analysis, General features demonstrated by frequency number and percentage. The effects of the BUDDEUMI(moxibustion and cupping a boli) therapy was analyzed by a t-test. The homogeneity testing revealed that all study variables are equally distributed between experimental and control groups. The hypothesis, 'the experimental group who received BUDDEUMI(moxibustion and cupping a boli) therapy will decrease in the grade of discomfort of shoulder', is supported. The hypothesis, 'the experimental group who received BUDDEUMI(moxibustion and cupping a boli) therapy will decrease in the Visual Analogue Scale is supported. Conclusion : As a result of this study, BUDDEUMI(moxibustion and cupping a boli) therapy will be able to be used as the self care therapy to improve the symptoms of middle aged women who has the shoulder pain.

Clinical Evaluation and The Diagnositic Significances of Disital Infrared Thermal Image(D.I.T.I.) on the Patients of Dam Hun(痰暈) (담훈(痰暈)환자의 임상적 고찰과 복부 적외선 체열촬영의 의의)

  • Park, Mee-Yeon;Choi, Hae-Yun;Kim, Jong-Dae;Song, Kwang-Kyu
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.20 no.2
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    • pp.488-493
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    • 2006
  • To make a objective diagnosis of Dam Hun(痰暈), we investigated the 63 patients with Dam Hun(痰暈) and 34 normal people as control group. we compared the thermal difference between Chon-jung(CV17 ) and Chung-wan(CV12 中脘), Chon-jung(CV17 ) and Gwan-won(CV4 關元) and we compared the thermal difference of Yang-mun(ST21 梁門), Chun_chu(ST25 天樞), Su-do(ST28 水道), too. All 63 patients had dizziness and GI trouble. They had the symptom - fatigue, nausea vomitting, head heaviness, indigestion, cold limbs, headache, heart burn, constipation, diarrhea, anorexia. And some had edema, numbness, insomnia, palpitation, facial flushing, dysuria, ringing. Considering the average temparature of Chon-jung(CV17 ), Chung-wan(CV12 中脘), Gwan-won(CV4 關元), Yang-mun(ST21 梁門), Chun-chu(ST25 天樞), Su-do(ST28 水道) between the patients group and the control group, the patients group were lower than the control group except for Chon-jung(CV17 ), Gwan-won(CV4 關元), but the statistical significance was not. Considering the thermal difference of Chon-jung(CV17 ) and Chung-wan(CV12 中脘), Gwan-won(CV4 關元), Yang-mun(ST21 梁門), Chun-chu(ST25 天樞), Su-do(ST28 氷道) between the patients group and the control group, the temparature deviation of Chon-jung(CV17 ) and Chung-wan(CV12 中脘), Chon-jung(CV17 ) and Yang-mun(ST21 梁門) was significant. We suggest that coldness of upper abdomen is significant in diagnosis of Dam Hun(痰暈).

Menstruation and the Variability of Food Intake in Female College Students (월경 전.후 여대생의 식사섭취 행태 변동성 분석)

  • Kang, Soohwa;Lee, Youngmee
    • Korean Journal of Community Nutrition
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    • v.18 no.6
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    • pp.577-587
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    • 2013
  • This study aimed to elicit the variability of appetite and food intake patterns in female college students during different menstrual phases. The craving for certain foods and physiological and psychological symptoms of menstrual phase (pre- and post-menstrual) were investigated by self-administered questionnaire. Three hundred and sixty six students who were 20.9 years old and had $19.8kg/m^2$ of BMI volunteered to participate in this study. Most of the subjects (89.5%) experienced the premenstrual syndrome (PMS) such as irritation, bodily fatigue, nervosity. Symptoms such as tiredness, stomachache, changes in taste and increased appetite were pointed out to be experienced at the onset of the menstrual cycle. The variability of food intake in premenstrual phase, 11.0% of subjects had decreased food intake where as 68.8% had experienced increased intake. The postmenstrual phase, 20.1% had decreased food intake while 45.2% had experienced increased intake due to changes in the appetite. Before starting menstruation, most of the subjects craved for sweets. The group who had experienced abnormal appetite during menstrual phase was significantly high ratio in overweight and obese students (p<0.05). We also observed an association between the PMS score and the variability of eating patterns during the menstrual phase. The students who experienced changing appetite and food intake had significantly high PMS score in the premenstrual phase (p<0.01) and postmenstrual phase (p<0.05). These results suggested a need for future study related to changes in the actual nutrient intake and activity level during the menstrual phase.

Study on Deficiency-Excess Pattern Questionnaire Development Possibility (허실 변증 설문지 개발 가능성에 대한 고찰)

  • Ryu, Hyun-Hee;Lee, Hae-Jung;Jang, Eun-Su;Lee, Si-Woo;Lee, Gi-Sang;Kim, Jong-Yeol
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.3
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    • pp.534-539
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    • 2009
  • Deficiency and excess pattern differentiation is unique characteristic of traditional oriental medicine on diagnosis and treatment. This differentiation is accomplished through pulse, tongue diagnosis and question examination, but most of these processes need to be objectified for efficacious treatment and traditional medicine development. In this study, we developed the deficiency and excess pattern questionnaire for objectification of question examination. The deficiency and excess pattern questionnaire was made out through The Traditional Oriental Medical Literature with Delphi Technique. Patients who visited oriental medical hospital filled out the questionnaire by themselves. Diagnosis of deficiency and excess pattern are conducted separately by oriental medical doctors with more than 5 years' clinical experience. Various physical condition factors were derived for the deficiency and excess pattern questionnaire. (Ordinary health degree, pain pattern, fatigue, weight change, sweating, uncomfortable awareness on chest and abdomen) Deficiency symptoms group acquired internal consistency, but excess symptoms group did not. (Cronbach's ${\alpha}$ > 0.6) There were significant associations between doctor's diagnosis and deficiency and excess symptoms in 'ordinary heath degree', 'voice weakening', and 'chest distress' (p-value < 0.1) There were significant differences between deficiency and excess syndrome patients groups in deficiency questionnaire score but there were no significant differences between deficiency and excess syndrome patients groups in excess questionnaire score. We acquired the internal consistency and significant result of deficiency pattern questionnaire, but we can find out some difficulties in development of the excess pattern questionnaire. These difficulties are associated with insufficiency description of traditional literature and small number of patients diagnosed as excess pattern.

Clinical Study of Chronic Hepatitis and Liver Cirrhosis Treated with Sodalgeonbitang-gamibang (소달건비탕가미방 투약 후 호전된 만성간염을 동반한 간경변 환자 1례)

  • Baek Dong Gi;Hwang Sang Il;Rhim Eun Kyung;Lee Yun Jae;Kim Dong Woung;Shin Sun Ho;Kim Hong Jun;Moon Goo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.1
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    • pp.306-309
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    • 2004
  • Liver cirrhosis is caused by virus, alcohol, toxins, drugs and chronic hepatitis. Clinical symptoms of liver cirrhosis are severe fatigue, nausea, fever, dyspepsia, anorexia, RUQ pain, jaundice, ascites. We applied oriental medicines to patient who had chronic hepatitis and liver cirrhosis. Sodalgeonbitang-gamibang has been used to treat hepatitis and liver cirrhosis because of its beneficial effects. The patient symptoms began to improve after about one month of treatment. After medication we could find remarkable effect on clinical symptoms and blood test. So we hope that this clinical study is helpful in treat a patient with hepatic disease.

Analysis of Studies on Sagunja-tang(Sijunzi-tang) to Establish the Fundament for Evidence Based Medicine (EBM 기반구축을 위한 사군자탕 연구 문헌 정량 분석)

  • Kim, Jung-Hoon;Lee, Jun-Kyoung;Shin, Hyeun-Kyoo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.24 no.2
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    • pp.206-219
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    • 2010
  • To establish the fundament for EBM of Traditional Korean Medicine, the papers on Sagunja-tang(Sijunzi-tang) frequently used in medical institutions of Traditional Korean Medicine were analyzed through researching domestic and international papers. The papers were classified by the registration of domestic or international journals, the year of publishment, experimental fields and the kinds of studies on biological activities. Of total 228 papers on Sagunja-tang(Sijunzi-tang), 121 volumes were selected according to creteria. 47 volumes were published in domestic journals, 71 in Chinese journal, 2 in Japanese journal, and 1 in Taiwan journal. The papers on instrumental analyses were preceeded by HPLC, MS, GC with standard compounds of herbal medicine in Sagunja-tang(Sijunzi-tang). The papers on biological activities of Sagunja-tang(Sijunzi-tang) showed improvement of gastrointestinal activity and blood circulation, immunoactivity, anti-cancer, anti-oxidant, anti-fatigue, anti-stress, pharmacokinetics, hepatic protection, radioprotection, muscular activity, hematopoiesis and nontoxical effect. Further studies including gastrointestinal disorder, immune related disease, cancer, oxidative injury and pharmacokinetic study need to be preceeded to establish the fundament for EBM of Sagunja-tang(Sijunzi-tang).

Study about Validity of Measuring Instrument for Symptoms Improvement on the Alcoholic Hepatitis Patients (알코올성 간질환자를 대상으로 한 증상개선 측정도구의 타당성 연구)

  • Kim, Jung-Eun;Park, Sang-Eun;Lee, Seung-Yeon;Son, Ho-Young;Hong, Sang-Hoon;Kang, Chang-Wan;Kim, Bo-Kyung;Chi, Gyoo-Yong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.24 no.2
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    • pp.345-351
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    • 2010
  • Alcoholic hepatitis is an acute and severe liver disease associated with high mortality rate. This study was conducted to develop the instrument of criterion for symptoms improvement after temperance. We made the symptoms improvement questionnaire for alcoholic hepatitis patients through reviewing traditional oriental medical literatures and got advices from the advisor committee with delphi technique. The advisor committee on this study was organized by 10 professors of internal medicine of oriental medical colleges nationwide. The questionnaire was composed of questions about 10 symptoms - fatigue, pain, anorexia, abdominal bloat, heaviness of the body, itch, nausea, sleep, dryness in the mouth and stools. We named it Alcoholic Hepatitis Symptoms Improvement Questionnaire(AHSIQ). We surveyed 65 male alcoholic hepatitis patients and checked liver function profile and AHSIQ before and after temperance four times for six weeks. As a result of factor analysis the scales of AHSIQ had content validity and construct validity. And internal consistency reliability was good(Cronbach's alpha=0.768-0.871). The total scale scores were statistically significant in gamma-GTP related validity. We suggest that AHSIQ would be effective for measuring symptoms improvement degree in alcoholic hepatitis patients through further investigations with larger clinical trials.

Neural-network-based Driver Drowsiness Detection System Using Linear Predictive Coding Coefficients and Electroencephalographic Changes (선형예측계수와 뇌파의 변화를 이용한 신경회로망 기반 운전자의 졸음 감지 시스템)

  • Chong, Ui-Pil;Han, Hyung-Seob
    • Journal of the Institute of Convergence Signal Processing
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    • v.13 no.3
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    • pp.136-141
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    • 2012
  • One of the main reasons for serious road accidents is driving while drowsy. For this reason, drowsiness detection and warning system for drivers has recently become a very important issue. Monitoring physiological signals provides the possibility of detecting features of drowsiness and fatigue of drivers. One of the effective signals is to measure electroencephalogram (EEG) signals and electrooculogram (EOG) signals. The aim of this study is to extract drowsiness-related features from a set of EEG signals and to classify the features into three states: alertness, drowsiness, sleepiness. This paper proposes a neural-network-based drowsiness detection system using Linear Predictive Coding (LPC) coefficients as feature vectors and Multi-Layer Perceptron (MLP) as a classifier. Samples of EEG data from each predefined state were used to train the MLP program by using the proposed feature extraction algorithms. The trained MLP program was tested on unclassified EEG data and subsequently reviewed according to manual classification. The classification rate of the proposed system is over 96.5% for only very small number of samples (250ms, 64 samples). Therefore, it can be applied to real driving incident situation that can occur for a split second.