• 한국감성과학회:학술대회논문집
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• 한국감성과학회 1997년도 한국감성과학회 연차학술대회논문집
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• pp.113-117
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• 1997

본 논문은 여름철 체감실험에 대한 결과이다. 유니폼을 착용한 각 피험자(중학생, 대학생, 고령자)는 90분동안 환경시험실에 체재하면서 의자에 앉아 전신온냉감 및 쾌불쾌감을 신고하였다. 체감실험동안 피부온도는 인체의 3곳에서 측정하였고 피험자는 10분 간격마다 전신온냉감 및 쾌불쾌감을 신고하였다. 환경물리량및 인체 피부온도는 매 20초 간격으로 측정하였다. 여름철 체감실험 결과 아래의 결론을 얻었다. 1)평균피부온도가 증가함에 따라 TSV는 선형적으로 능가하며 열적으로 중립감을 느낄 때으리 평균피부온도는 고령자의 경우 남자 33.8$^{\circ}C$, 여자 34.3$^{\circ}C$이고, 대학생 남자의 경우 34.1$^{\circ}C$ ,여자 33.8$^{\circ}C$, 중학생의 경우는 34.4$^{\circ}C$이다. 2)발한량과 평균피부온도의 관계는 각 계층 모두 평균피부온도 34$^{\circ}C$를 전후로 급격히 상승함을 알 수 있다. 3)전신온냉감이 중립일 경우 고령자 남자의 SET＊=25.6$^{\circ}C$, 고령자 여자 28.4$^{\circ}C$, 대학생 남자 26$^{\circ}C$, 대학생여자 26.9$^{\circ}C$, 중학생 27.1$^{\circ}C$이었다.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 1997년도 한국감성과학회 연차학술대회논문집
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• pp.107-112
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• 1997

본 연구의 목적은 겨울철 난방시 한국인의 온열감각과 온열환경지표 사이의 상관관계 및 ASHRAE Standard 55-74의 쾌적영역과 한국인의 쾌적영역을 체감실험을 통해 규명 및 제시하는 것이다. 유니폼을 착용한 피실험자는 온도, 습도, 기류 등이 조절되는 환경시험실에서 2시간동안 체재하면서 매 15분 마다 전신온냉감, 쾌불쾌감 등을 신고하였다. 또한 인체의 3부위에서 피부온도, 환경시험실의 온도 및 습도를 매 20초 간격으로 측정하였다. 이상의 체감실험을 통해 아래의 결론을 얻었다. 1)평균피부온도가 증가함에 따라 TSV는 선형적으로 증가하며 열적으로 중립감을 느낄 때의 평균피부온도는 청년 34.$0^{\circ}C$, 고령자 33.5$^{\circ}C$이다. 2)TSV=0일때 청년의 중립 SET＊는 25.5$^{\circ}C$, 고령자의 중립 SET＊는 27.$0^{\circ}C$이다. 3)한국인의 쾌적범위는 청년의 경우 SET＊의 경우 24.2-26.8$^{\circ}C$, 고령자의 경우 SET＊25.7-28.2$^{\circ}C$로 ASHRAE St.55-74의 권장 쾌적범위 (22.0-25.4$^{\circ}C$)보다 다소 고온지향적이다.

• 감성과학
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• 제1권1호
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• pp.199-211
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• 1998

본 연구의 목적은 한국인을 대상으로 겨울철 체감실험을 통해 SET*(PMV)와 상관관계를 규명하고, ASHRAE Standard 55-74의 쾌적영역과 한국인의 쾌적영역을 비교 검토하는 것이다. 실험에 참가한 각 피험자는 동일한 유니폼을 착용한 체 의자에 앉아 환경시험실에서 2시간 체재하였다. 피험자의 평균피부온도는 신체 3군데에서 측정한 피부온도 값을 이용하였고, 전신온냉감 및 쾌불쾌감 신고는 매 15분 간격으로 측정하였다. 전신온냉감 신고 스케일은 -3= cold, -2=cool, -1=slight cool, o=neutral, +1= Slightly warm, +2=warm, +3=hot 이며, 쾌불쾌감 신고스케일은 0=comfortable, +1=slightly comfortable, +2=uncomfortable, +3=very uncomfortable이다. 겨울철 체감실험을 통해 아래의 결론을 얻었다. 1)전신온냉감이 중립이 될때 청년층의 SET*는 25.5$^{\circ}C$이며, 고령자의 중립온도는 27$^{\circ}C$이었다. 고령자는 청년에 비해 $1.5^{\circ}C$(SET*) 정도 고온을 선호하였다. 2)청년층의 쾌적영역은 24.2-26.8$^{\circ}C$(SET*)이며, 고령자의 쾌적영역은 25.7-28.2$^{\circ}C$이었다. 이러한 쾌적영역은 ASHRAE의 쾌적영역보다 고온지향적임을 알 수 있었다.

• 한국지역사회생활과학회지
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• 제20권4호
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• pp.515-522
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• 2009

This study was to develope the functional work clothing for livestock farmers. Major demanding performances for livestock work clothing are anti-soil and anti-bacterial properties. On surveys, functional fabrics that have anti-soil, anti-bacterial and waterrepellent performances were developed and the work clothing that have adaptability to body movements were manufactured. The designs of livestock working clothes were two piece and one piece with rubber bade in waist. The thermal responses of subjects wearing the winter working clothes for stock farming worker were measured in the climate chamber($17^{\circ}C$, 40% R.H.). The main results were summarized as follows: Total body weight loss was smaller and the mean skin temperature was higher in developed clothes than the market product. Clothing micro-climate of developed clothes was lower than the market clothes. Subjective sensation did not have significant differences. From the results of various evaluation, developed garments for livestock workers showed better efficiency than the market product.

• 한국의류학회지
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• 제29권1호
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• pp.35-45
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• 2005

The purpose of this study was to evaluate thermal properties of soccer wear with different materials and designs. As a beginning step, the questionnaire survey about the actual condition of soccer wears was conducted. with the results of the questinnaire, two soccer wears with new material and design that were improved in tactile sensations, absorption and ventilation were developed. We evaluated thermal and subjective responses of subjects wearing Korea national soccer team uniform in 1998 World Cup (Uniform 98), soccer wear with new material and same design(New II) and with new material and new design(New I). New I was made with mesh in armhole for improving ventilation. Rectal temperature, skin temperature, clothing microclimate, and heart rate were measured in climatic chamber test(twelve times) and field test(eighteen times). The results were as follows. 1. As the results of the climatic chamber test, rectal temperature was lower in New I and New II than Uniform98, and mean skin temperature was lower in New I than Uniform 98 and New II. Heart rate was lower in New I than New II, and total body weight loss and local sweating were not significantly different by soccer wears. 2. As the results of the field test, rectal temperature was lower in New I than Uniform98 and New II. Mean skin temperature was lower in New II than Uniform98 and New I. Clothing microclimate temperature was lower in New II than Uniform98 and New 1, and clothing microclimate humidity was lower in New I, New II than Uniform 98. Heart rate was lower in New I than Uniform 98, New II and total body weight loss and local sweating were lower in New I, New II than Uniform 98. In conclusion, New I using new design using mesh in armhole and new material using sweat absorbent finishing was excellent from the point of view of physical responses, ventilation and sweat absorption.

• 한국의류산업학회지
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• 제24권5호
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• pp.655-665
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• 2022

This study evaluated the validity of a newly developed mobility protocol examining the comfort functions and requirements of personal protective equipment (PPE) for COVID-19 healthcare workers. Eight males (age: 24.7 ± 3.0 y, height: 173.4 ± 2.3 cm, and body weight 69.9 ± 3.7 kg) participated in the following three PPE conditions: (1) Plastic gown ensemble, (2) Level D ensemble, and (3) Powered air purifying respirator (PAPR) ensemble. The mobility protocol consisted of 10 different tasks in addition to donning and doffing. The 10 tasks were repeated twice at an air temperature of 25oC with 74% RH. The results showed significant differences among the three PPE conditions in mean skin temperature, local skin temperatures (the forehead, thigh, calf, and foot), clothing microclimate (the chest and back), thermal sensation, thermal comfort, and humidity sensation, while there were no significant differences in heart rate or total sweat rate. At rest, the subjects felt less warm and more comfortable in the PAPR than in the Level D condition (P<0.05). However, subjective perceptions in the PAPR and Level D conditions became similar as the tasks progressed and mean skin and leg temperature became greater for the PAPR than the Level D condition (P<0.05). An interview was conducted just after completing the mobility test protocol, and suggestions for improving each PPE item were obtained. To sum up, the mobility test protocol was valid for evaluating the comfort functions of PPE for healthcare workers and obtaining requirements for improving the mobility of each PPE item.

• Annals of Clinical Neurophysiology
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• 제12권1호
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• pp.21-26
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• 2010

Background: Although quantitative sensory test (QST) is being used with increasing frequency for measuring sensory thresholds in clinical practice and epidemiologic studies, there has been no age-matched normative data in Korean adults. The objective of this study is to evaluate the value of QST in diabetic polyneuropathy with normal range in Korean adults. Methods: The Computer Aided Sensory Examination IV 4,2 (WR Medical Electronics Co., Stillwater, Minnesota, U.S.A.), with 4,2,1 stepping algorithm was used to determine vibration and cold perception threshold in 70 normal controls and 19 patients with diabetic polyneuropathy aged from 21 to 79 years. The data were used to define age-matched upper and lower normal limits and normal range of side to side difference. We also evaluated the duration of diabetes, serum HbA1C level, and findings of nerve conduction study (NCS) and QST in patients with diabetic polyneuropathy. Results: In normal adults, sensory thresholds slightly increased with age, and a slight side-to-side difference was observed. The diagnostic sensitivity of QST was not higher than NCS in patients with diabetic polyneuropathy (36.8% vs. 42.1%, p=0.716), especially among elderly patients. Conclusions: QST might be used as a complementary test for NCS in the diagnosis of diabetic polyneuropathy. Although the QST is a simple method for the evaluation of peripheral nerve function, there are some limitations. Most of all, because the QST measuring is dependent on the subjective response of patients, the degree of concentration and cooperation of the patients can significantly affect the result. And thus, attention should be paid during the interpretation of QST results in patients with peripheral neuropathy.

• 한국의류학회지
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• 제33권11호
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• pp.1806-1816
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• 2009

This study analyzes the efficiency of a solar cell attached to an air circulation jacket. A commercially available silicon solar panel was selected and attached at four spots where the body angle was $40-60^{\circ}$ and voltage ($V_{oc}$, V), current ($I_{sc}$, A), and output power (P, W) were measured to determine the efficiency. The solar panel was applied to the outer jacket that operates with two fans to increase the convection that lowers the body temperature. The heavy work of standing, walking, and sweeping of a street sweeper was simulated in the field test. The microclimate within the jacket (with or without a fan) was measured and the subjective thermal, humidity, and comfort sensations were surveyed. SPSS 12.0 statistical package was used for a t-test and Wilcoxon signed-rank test. The results show that the highest efficiency of the solar cell was at the incident angle of $60^{\circ}$ in terms of voltage, current and output power distribution. The microclimate temperature of the air circulation jacket decreased significantly with the high power of the fan and subjects felt cooler than the jacket with a fan at the incident angle of $60^{\circ}$. Air circulation jackets operated by a silicon solar panel showed a significant cooling effect on the wearers.

• 한국의류학회지
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• 제30권3호
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• pp.407-411
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• 2006

본 연구에서는 비만아동의 온도적응능력을 향상시키기 위해 초등학교 4학년$\∼$6학년에 재학 중인 비만아동 13명(남자 6명, 여자 7명)을 대상으로 하여, 10주간의 단기 의복착용훈련 프로그램을 시행한 후 프로그램의 효과를 알아보았다. 프로그램 시행기간 중 아동이 매일 직접 측정한 주택 내 실내온도는 평균 25.1$^{circ}C$였고, 아동이 착용한 체표면적당 의복의 무게(착의량)는 평균 300g/$m^{2}$였으며, 실내온도와 착의량 간에는 유의한 상관이 있었다(p < .01). 프로그램의 시행효과를 구체적으로 알아보기 위해, 23.0$\pm$0.5$^{circ}C$, 50$\pm$5$\%$RH로 조절된 인공기후실에서 실험을 실시하여, 반소매 면 티셔츠(0.13clo)와 T/C 반바지(0.09c1o)를 착용하고 안정상태에 있는 아동의 체온, 피부온, 혈압 및 맥박 등의 생리반응과 쾌적감 및 온랭감의 주관적 감각반응을 프로그램 시행 전후에 측정한 후 얻은 주요 결과는 다음과 같다. 평균피부온은 프로그램 시행전후에 유의한 차이가 없었으나, 전반적으로 체온과 평균혈압은 프로그램 시행 후에 내려갔다(p < .01). 주관적 감각반응에서는 프로그램 시행 후에 여아가 남아에 비해 약간 더 따뜻하게 느꼈고(p < .05), 이에 따라 아동자신이 선택한 쾌적온도는 더 낮은 경향을 나타내었다(p < .1). 이와 같은 연구결과는 비만아동의 행동성 및 자율성 체온조절연구에 유익할 것이나, 보다 명확한 자료를 얻기 위해서는 종합적이고 장기적인 훈련프로그램의 시행이 요구된다.

• 한국의류학회지
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• 제15권2호
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• pp.77-87
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• 1991

The purpose of this study were to investigate the bed climate and the physiological responses in sleep on the traditional Korean floor heating system called Ondol. Ondol has been the most widely used heating system in Korea, yet there has been a no systematic studies examined its environmental effects on human body. Experimental room was constructed to match the typical thermal environment of Ondol. (floor surface temperature; $32\~33^{\circ}C$, air temperature; $22.5{\pm}1.0^{\circ}C$, relative humidity; $64.0{\pm}4.0\%$RH, air velocity; 0.25 m/sec.) Three different combinations of bedclothes were chosen for the experiment based on the study results showing that they were the most widely used types in Korea. Type 1 was the combination of a cotton-padded mattress with a cotton-padded Korean style blanket. Type 2 was a cotton-padded mattress with a cotton-guilted Korean style blanket. Type 3 was a cotton-padded matless with a polyacryl blanket. Thermal resistance of each of these combina-tions in the bedclothes was measured using thermal manikin. Two adult female was chosen for the seven hour sleeping experiment which was known to be the average sleeping hours of Korean adult female. The bed climate was measured with the temperature under the mattress, the surface temper-ature of the mattress, and the air temperature and the relative humidity of the space between the mattress and blanket. The skin temperature, rectal temperature of the subjects and the bed climate were measured eight times, one hour before the experiment and every hour during the experiment. The weight loss and the subjective sensation were measured for the each subjects before and after the experiment. The procedure was repeated twice with two subjects and three types of bedclothes, yielding twelve combinations of results. The results were as follows; 1. With the surface temperature of $32\~33^{\circ}C$ of Ondol, air temperature was $22.5{\pm}1.0^{\circ}C$ with $64.0{\pm}4.0\%$ RH. The bed climates were $39.2{\pm}40.8^{\circ}C$ under the mattress, $35.3\~36.2^{\circ}C$ on the mattress, and $26.9\~32.0^{\circ}C$ with $56.0\~71.3\%$ RH between the mattress and the blanket. 2. Mean skim temperature during sleep was 34.2"C with local skin temperature of $34.0\~35.5^{\circ}C$. The skin temperatures of abdomen, thigh, foot were higher than the other parts of the body. 3. The skin temperature of chest, thigh, leg and back varied significantly according to the combinations of bedclothes. With the cotton-padded blanket, the skin temperature was the highest, while with the cotton-guilted blanket showed lowest. 4. Examining the relationship between the mean skin temperature and the local skin temper-ature, the chest temperature showed the highest correlation with the former. Therefore, the chest temperature can be recommended to represent the skin temperature in measuring the bed climate. 5. The subjective bed climates were $39.0\~40.4^{\circ}C$ under the mattress, $35.2\~35.9^{\circ}C$ on the mattress, $29.8\~31.6^{\circ}C$ with $56.8\~68.4\%$ RH between the mattress and blanket. In sum, from this experiment we not only obtained the reliable value of bed climates on Ondol, but also showed that the bed climates and the physiological responses were affected differently according to the materials of bed clothes.