• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.3 s.162
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• pp.343-350
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• 2007

This study compared and studied the clothing mobility of two types of aerobic clothes - those made of currently popular stretch materials and those made of new stretch materials that were specially developed for this study. The focus of the comparison was on the range of joint movement during activity, and the physiological burden imposed on the body by the clothes. In total, 18 experiments were carried out under controlled conditions in an artificial climatic chamber with a temperature of $25{\pm}1^{\circ}C$, air humidity of $60{\pm}5^{\circ}C$ and negligible air movement. Each exercise program consisted of a 30-minute of aerobic workout and a 20-minute rest following the exercise. Measurements were taken to determine the following: physiological reactions (whole-body and local sweat rates), subjective sensations(of temperature, humidity, comfort, tightness, and clothing wetness), joint angle(measured with a goniometer), and so on. The results of the study us as follows: Material B excels in clothing mobility. Material C excels in sweat absorbency and drying speed. Material A was found to be the hottest material, while material C was found to be slightly hot through the analysis of the change in pre- and post-exercise bodyweight(= amount of sweat). Regarding the amount of evaporated sweat, material A>material C>material B. Material B produced the smallest amount of evaporated sweat. The wider the range of joint movement, the smaller the amount of sweat and the lower the average skin temperature.

• Korean Journal of Human Ecology
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• v.11 no.3
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• pp.273-285
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• 2002

Three materials for sport underwear were manufactured by order for study, and among them, suitable material in order to perform an experiment on the effect of wearing was adopted. The results are as follows: The result of wearing an experimental clothes for sports manufactured as a foundation-type underwear for sports showed that if the same compositional materials were applied, laminating material had higher rate than that of others in the amount of sweat. Concerning relative humidity in clothes and the amount of sweat absorbed in clothes among the two kinds of materials which were produced by laminate, material 2(nylon+modal) was statistically exerts higher influence on the amount of sweat. The humidity in clothes keeps the optimal condition of 59.8%, and breast part showed the highest relative humidity. The material 2(nylon+modal) showed the highest comfortableness, the sense of warmth, humidity and voluminousness, and the sense of pressure. Follow-up survey revealed that in case of material 2, higher amount of sweat than that of the group objects in its early phase, and the amount of sweat varies from individuals. The temperature in clothes of folded parts of experimental clothes and maximum surface temperature was equivalent to that of average skin. With the lapse of time, the weight decreased of 11.03% in maximum, and 3.12% in minimum. The amount of change in the girth was greater in part of body frame than that of limbs, and especially, navel and waist part showed high decrease, and upper breast, breast and the largest part of abdomen showed relatively low decrease. The above experiment revealed that materials for suitable to the underwear for sports for loss of weight by an exercise should be made of doubled-nylon and modal, along with the laminate processing, which heightens the amount of sweat. Thus, wearing an experimental wear gave satisfaction in the view of the beauty of appearance as it did not discharge flowing secretion to the outside at the time of exercise.

• Journal of Sasang Constitutional Medicine
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• v.24 no.1
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• pp.43-53
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• 2012

1. Objective : It is well-known that even if some people are born with same constitution, their symptoms can be different according to Exterior and Interior diagnosis. This study aimed to suggest different clinical symptoms according to Exterior and Interior group in individual Sasang constitution. 2. Methods : We collected 706 physiological and pathological data of subjects from August 2009 to July 2011 using case report form of Questionnaire. The Sasang constitutional diagnosis and Exterior and Interior diagnosis were conducted by Sasang constitutional experts. All data were analyzed with Chi-square test and significant p value was 0.05. 3. Results : There are different symptoms between Exterior and Interior group in Taeeumin as followed, the frequence of famine and burp, the part of sweat, brown or not in color of stool, painful or not in evacuating, the frequence of loose feces, the frequence of abdominal inflating, the costive feeling frequence after evacuating, foam in urine or not, urination times, amount of Coldness and Hotness in belly, the frequence of turning fale in face. Soeumin as followed, digestion well or not, amount of sweat in exercise, the brown or not in color of stool, the frequence of turning fale in face, athe frequence of clearness in urine and feeling hot. Soyangin as followed, amount of appetite, amount of sweat in hot weather, sweat in neck or not, the red color in urine or not, Coldness and Hotness in foot or not, amount of drinking. 3. Conclusions : We may suggest that physiological and pathological symptoms are different between exterior and interior group in individual Sasang constitution respectively.

• Journal of Physiology & Pathology in Korean Medicine
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• v.23 no.1
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• pp.251-258
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• 2009

This study aimed to find out the difference of ordinary symptom according to Sasang Constitution and Gender. We collected 1241 subjects who had been diagnosed by the Sasang Constitution specialist and confirmed with Sasang Constitution drug response in the thirteen oriental hospitals. We researched ordinary symptoms through a paper and used Chi-square test to know association between items and Sasang constitution. There are significantly different items according to Sasang Constitutions statistically, which are "amount", "speed", "indigestion" and "appetite" in meal, "amount", "feeling after sweat" in sweat, "thickness" in feces, "foam" and "frequency" in urine, "sensitivity and hand, feet of part" in heat and cold" and "amount and habit" in drinking water". In male, "indigestion", "frequency in urine", "a lots of dream" and "hard to sleep" in Soeumin, "sweat in head and face" "foam of urine" and "warm of abdomen" in Taeeumin were different among Sasang Constitutions. In female, "sweat in chest" in Soeumin, "short time of feces" in Soyangin were different among Sasang Constitutions. From the above results, ordinary symptoms were different according to Sasang Constitutions. and in some part, there are also gender differences of Sasang Constitution.

• The Journal of Internal Korean Medicine
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• v.33 no.4
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• pp.558-571
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• 2012

Objectives : The purpose of this study was to verify the difference in diet, digestion, sweat, feces and urination characteristics according to body shape characteristic. Methods : 1,302 participants were divided into 4 body types and were assessed through the questionnaire about Sasang constitution's ordinary symptoms such as diet, digestion, sweat, feces and urination characteristics. Results : Hyeong-keum type had active characteristics in the size of their meal and speed of taking meal. Hyeong-keum type got the most in the amount of sweating. And Yo-wi type reported the greatest urinary frequency. Conclusions : The difference of body type influences Sasang constitution's ordinary symptoms such as diet, sweat and urination. In digestion and feces, there was no statistical significance in the difference.

• Journal of the Korean Society of Clothing and Textiles
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• v.21 no.4
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• pp.669-676
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• 1997

The purpose of this study is to examine the effect of the improved cold tolerance resulting from cool clothing in winter on heat tolerance in summer. Ten healthy women were divided into two groups, cold group(C group) (n=5) and warm group(W group) (n=5) . In the previous study, C group was proved that their cold acclimatization was achieved through wearing cool clothing from September to February of the following year, while Wgroup was not proved because of wearing warm clothing during same period. After February, no more clothing training was continued in two groups. To determine the heat tolerance, both groups were exposed from a thermoneutral environment(25$\pm$1$^{\circ}C$, 50$\pm$5% R.H.) to a hot environment (35$\pm$1$^{\circ}C$, 50$\pm$5% R.H.) before and after clothing training, respectively September in 1994 and truly in 1995. Rectal temperature, skin temperatures, thermal sensation and comfort were measured every 10 min., and Os uptake was measured at 10, 45, 85 min. after entering the chamber for 5 min. Body weight was measured before and after the experiment and amount of local sweat was measured during the 90 min long experiment. The results are as follows: Rectal temperatures in 35'c environment of C group were increased after training when compared with before clothing, while those of W group were not changed. But the changes of rectal temperature and heat production during 90 min in hot environment were almost the same in two groups after training. And mean skin temperatures, the changes of mean skin temperatures during 90 min in hot environment, total sweat amount and local sweat amount after training were also the same in two groups. From these results, it might be supposed that the heat loss of two groups were the same but the heat production, especially heat production during rest in C group was higher than in Wgroup. This fact suggests that the increase of rest heat production from cold acclimatization in winter is maintained to summer of the following year. And mild cold acclimatization coming from westing cool clothing does not have a negative effect on heat tolerance.

• Journal of the Korean Society of Clothing and Textiles
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• v.27 no.5
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• pp.517-523
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• 2003

We studied the physical properties of silk fabrics after degumming, the dyeability and the color fastness of silk fabrics after degumming and sericin fixing. As the sericin was removed from silk fabrics, the rate of weight loss increased and both the abrasion resistance and the drape coefficient decreased. This means that the amount of the sericin remained in silk fabrics significantly affects the physical properties of silk fabrics. On the surface and the cross-section of silk fabrics, the silk fibers enclosed by the sericin seemed to be in a lump shape. Each fibroin strand, however, got scattered, as the process of degumming went through. The dyeability of silk fabrics degummed decreased at between 20$^{\circ}C$∼80$^{\circ}C$ the dyeing temperature, on the other hand, it significantly increased over 80$^{\circ}C$. The dyeability of the sericin-fixed silk fabrics was lower than that of the non-serin-fixed silk fabrics, to a little extent. The colorfastness of crocking in the dyed-silk fabrics was a little low and that of the sweat was much lower in a basic sweat. Especially, the colorfastness of the partially degummed silk fabrics was low, because the sericin was not stable in the condition of sweat. Therefore, the process of sericin fixing is essentially required, for the partially degummed silk fabrics and the process of degumming itself.

• Fashion & Textile Research Journal
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• v.15 no.6
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• pp.993-999
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• 2013

This study aimed to measure the amount of sweating on 12 parts of the upper body using absorption fabric and analyze subjective sensations. The study was conducted with 9 male subjects in climate chamber controled at $30{\pm}0.5^{\circ}C$, and $55{\pm}5%$ RH. The result was that sweating amount of the upper back part was significantly more than upper front part. We assumed that forced convection flow cased by exercise decreased the sweating rate in the front. The skin temperature of upper front body rapidly decreased as soon as exercise starts and gradually increased with cessation of exercise. On the other hand, the skin temperature of palm increased with exercise and showed continuous increasing even exercise stopping all the experimental period. This is caused by thermoregulatory responses through vasodilatation on the peripheral area. Subjective sensations, such as thermal sensation, wet sensation, and thermal comfort showed the highest score at the time of exercise stop. This means the subjects felt more hot, wet, and uncomfortable after exercise stopped. Bur after wiping of sweat, subjective sensation scores were recovered rapidly. The present study has provided more detailed information on the upper body sweat distribution than previously available, which can be used in clothing design, thermo-physiological modeling, and thermal manikin design. We also think that results of the present study will play an important role in making the sweat distribution map.

• Journal of the Korean Society of Clothing and Textiles
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• v.36 no.10
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• pp.1050-1057
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• 2012

This study helps develop a cool body armor that maintains a tight-fit configuration to the body surface and evaluates the performance of newly developed body armor in a wear test. Three types of body armor were used for evaluation. One was a tight fitting body armor that was constructed to improve the degree of fit and ease of movement for Korean soldier using 3D technology. Another was ventilating body armor with attached spacers on the shoulder to reduce the thermal stress on the soldier. The third was a prevailing body armor produced by a Korean body armor company. In order to evaluate the performance of the body armor, a human wear test, a thermal mannequin test, and computational fluid dynamics (CFD) were executed. Five subjects participated in the wear test. Subjective wear sensation, total amount of sweat and dynamic change of clothing microclimate were observed during and after exercise on a treadmill; subsequently, it was found that subjects rated tight fitting body armor and ventilating body armor lighter, drier, and easier to move than the conventional body armor (p<.05). Total amount of sweat was the least in the case of ventilating body armor. The thermal resistance and vapor resistance of the ventilating body armor were improved remarkably. In addition, the skin temperature of the ventilating body armor with spacers was lower than the tight fitting body armor by at least $1^{\circ}C$ in the CFD result. It is noted that thermal-wet comfort of the 3D body armor with ventilating feature is superior to the conventional body armor, especially when the ventilating channel is not closed due to a backpack.

• Journal of Sasang Constitutional Medicine
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• v.19 no.3
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• pp.144-155
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• 2007

1. Objectives The purpose of this study was to find the difference of ordinary and pathological symptoms according to Sasang Constitution. 2. Methods We recruited 418 subjects in the five oriental hospitals and researched normal symptoms and illness ones through a paper, who were diagnosed by the Sasang Constitution specialist in oriental hospital, who had remarkable improvement in their chief complain after Sasang Constitution medication. 3. Results 1) In ordinary symptoms, amount, speed and appetite items of Digestion are significantly different according to Sasang Constitution statistically(p<0.05). Feeling after evacuation of Feces, feeling after urination and yellow color of Urine, amount, feeling after sweat, location in hand/feet of Sweat, and in the others, Tireness in head, Drinking water, sensitivity, coldness in hand/feet, warmness in belly of Coldness/Warmness are also significantly different(p<0.05). 2) In pathological symptoms, palpitation, swelling and lack of appetite items are significantly different according to Sasang Constitution statistically(p<0.05). 3) In diseases, Hypertension and DM items are significantly different according to Sasang Constitution statistically(p<0.05). 4. Conclusions There were significantly difference items in ordinary, pathological symptoms and diseases according to Sasang Constitution.