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내한성 증진을 위한 착의훈련이 쾌적 의복기후 및 주관적 감각에 미치는 영향
박준희(JoonHee Park),최정화(Jeongwha Choi) 한국생활환경학회 2010 한국생활환경학회지 Vol.17 No.3
This study was performed on humans to investigate the effects of wear training for developing cold tolerance on comfort zone of microclimate and subjective sensations. Twenty male subjects participated in the investigation and they were subdivided into two groups consisted of each 10 participant: experimental group (EG) and control group (CG). EG dressed lightly to feel little cool or cold that is, temperature inside clothing of them was lowered than before wear training, but CG dressed as usual to feel comfortable during wear training of 4 weeks. Clothing microclimate and subjective sensations were measured during life time and subjective sensations in a cold environment was measured for evaluating cold tolerance. The results were as follows. EG during wear training maintained lower temperature inside clothing in day time and sleep than before wear training, respectively 1.7℃ and 0.8℃. Total clothing weight and total clothing number of EG during wear training were 547.2±136 g/㎡ and 3.43±0.6, respectively. EG felt more comfortable at low temperature inside clothing during than before wear training (p<.01). Also, EG felt less cold, less uncomfortable and more tolerable after than before wear training when it was exposed in the same cold environment (p<.01). In conclusion, through these results, it can be seen that wear training, the way of lowering the temperature inside clothing by 1.7℃ during 4 weeks in a cold season, positively affected cold tolerance.
추운 계절 자전거 운동 시 부위별 피부온, 의복기후, 주관적 감각에 미치는 기류의 영향
박준희(Joonhee Park),유신정(Shinjung Yoo) 한국생활환경학회 2014 한국생활환경학회지 Vol.21 No.5
This study was conducted to investigate effects of air flow on physiological responses during winter cycling. Ten male volunteers were recruited and all tests were conducted in a climatic chamber (12 ± 0.5℃, 50 ± 5%RH) under two different conditions: the high airflow (HAF, 2 m/s) and the low airflow (LAF, < 0.2 m/s). Skin temperatures and clothing microclimates were higher in LAF than in HAF (p < .05) and participants felt hotter, wetter and more uncomfortable in LAF compared to in HAF (p < .05). Physiological responses and subjective sensations were different according to the regional body part (p < .05). These results suggest the need of body mapping technique on skin temperature, microclimate and subjective sensation, considering effects of air flow.
환경온도를 이용한 온도 자극이 혈역학 반응 및 체온조절 반응에 미치는 영향
박준희(Joonhee Park),유신정(Shinjung Yoo) 한국생활환경학회 2015 한국생활환경학회지 Vol.22 No.2
This study was conducted to investigate effects of thermal stimulation using an air temperature on hemodynamic responses including capillary diameters and relationship between hemodynamic and thermoregulatory responses. 22 male subjects participated under two experimental conditions: cold exposure (CE, 10.5±0.8℃) and heat exposure (HE, 40.9±0.4℃). Both arterial and venous diameters in CE were smaller than those in HE and flow velocity was 3 times faster in HE compared to CE (p<.001). Participants felt more uncomfortable and more intolerable in HE compared to CE (p<.05). The smaller venous diameter was, the higher blood pressures were, and venous diameter and flow velocity had positive relationships with microclimate temperature (p<.01) and skin and rectal temperatures (p<.05). Thermal sensation had positive relationships with venous diameter and flow velocity, while it had negative relationships with blood pressures (p<.01). These results indicate that vasoconstriction or vasodilatation can be measured directly and visually by using the capillaroscopy and hemodynamic responses including sizes of capillary have relationships with thermoregulatory responses.
추운 환경에서 보온용 장갑 착용이 고령 여성의 인체 생리 반응 및 주관적 감각에 미치는 효과
박준희 ( Joonhee Park ),이주영 ( Joo-young Lee ) 한국의류학회 2019 한국의류학회지 Vol.43 No.6
This study examined the physiological and psychological effects of wearing gloves at rest in a cold environment. Seven elderly females participated in two separate trials: wearing gloves (WG) and bare hands (BH). The experiment was conducted for 60 min in a climatic chamber (air temperature 7.8±0.3oC with 44±2%RH) with a sedentary posture. Microclimate temperature on the left palm was 4.16oC higher in WG compared to that in BH (p<.1). Microclimate temperature on the chest during the last 5 min increased compared to the initial 5 min only in WG (p<.05). During the last 5 min, skin temperatures at the arm and hand in WG were higher than those in BH (p<.05). There was no statistical difference in the change of rectal temperature between WG and BH. Heart rate in BH was significantly higher compared to the WG (p<.05). Subjects also felt less cold on the whole body and hand in WG than those in BH (p<.05). The findings indicate that wearing gloves for elderly females affected the distribution of skin temperature and cardiovascular response in cold environments. Elderly females should be informed about the importance of wearing gloves through the clothing guideline in winter.
고령 남자의 겨울철 모자 착용 효과-생리·심리적 검토-
박준희 ( Joonhee Park ),이주영 ( Joo-young Lee ) 한국의류학회 2019 한국의류학회지 Vol.43 No.3
This study examined the physiological and psychological effects of wearing a winter cap at rest in a cold environment. Seven older males participated in two separate trials: wearing a winter cap (CAP) and non-wearing a winter cap (CON). The experiment was conducted for 60 min in a climatic chamber (air temperature 7.8±0.3℃ with 43±2%RH) with sedentary posture. Microclimate temperature at the vertex of the head was 6.88℃ higher in CAP compared to CON (p<.01). Microclimate humidity at the vertex was lower in CAP than in CON only during the last 5 min (p<.01). Skin temperature at the forehead in CAP was higher than in CON (p<.01). During the last 5 min, rectal temperature was higher in CAP than that in CON (p<.05). Unlike CAP, the heart rate in CON during the last 5 min decreased significantly compared to the initial 5 min (p<.05). Subjects also felt less cold on the head/face in CAP than that in CON (p<.01). The results indicate that wearing a cap for elderly males positively affected body temperature regulation and cardiovascular response in cold environments. The importance of wearing warm hats for elderly males in winter should be emphasized.
혈압 관리를 위한 8주간의 온열교대 착의훈련이 고혈압환자의 혈압 및 혈중 지질 성분에 미치는 영향
박준희(Joonhee Park),유신정(Shinjung Yoo),김병성(Byungsung Kim),원장원(Changwon Won),김현진(Hyunjin Kim),방기성(Giseong Bang) 한국생활환경학회 2012 한국생활환경학회지 Vol.19 No.5
This study was performed on 14 participants with prehypertension or hypertension to investigate the effects of the wear training on the blood pressure and the blood lipid profile. Participants were randomly assigned to an experimental group(n = 7) and a control group(n = 7). Experimental group was performed the wear training. The wear training means the process for acclimation through the alternate stimulation of the temperature inside clothing. The experimental group wore two different garments with 3.0oC difference in the temperature of inside clothing in a climatic chamber (19.0±0.2oC, 45±5%RH) alternately for 8 weeks (3 times/week). The results were as follows. During 8 weeks of wear training, SBP and MAP had the reduced tendencies in EG. After wear training, the number of 1 stage hypertension patient was decreased from 5 to 3 in only EG. As for blood lipid profiles, TC, LDL-C were lowered in EG than in CG (p<.05) and AI and LDL-C/HDL-C ratio had the reduced tendencies in EG. These results showed that the wear training affected positively the improvement of hypertension.
박준희(Joonhee Park),차성원(Seongwon Cha),신소라(Sora Shin),김수정(Sujung Kim),이주영(Joo-Young Lee) 한국생활환경학회 2018 한국생활환경학회지 Vol.25 No.3
This study investigated 24-hr body temperature and heart rate of women divers, haenyeo. Young and older non-diving females, who have no experience of swimming in cold sea water, were recruited as control groups. Three groups participated in a modified routine protocol: ten females in older haenyeo group, eight in young non-diving female group and eight in older non-diving female group. The fluctuation ranges of the core body temperature were about 1℃ in all groups (Older haenyeo: 36.7~37.8℃, Young non-diving female: 36.7~37.6℃, and Older non-diving female: 36.8~37.9℃). There were no significant differences in core temperature among groups except for during exercise and the rest period the following morning (P<0.05). No differences were in mean skin temperature among groups except for the rest period just after cold exposure and exercise (P<0.05). Heart rates in older haenyeo were lower than those of the two groups for all time intervals (P<0.05). Older haenyeos’ lower heart rate during daily lives, as their unique trait, may reflect their lifelong practice of swimming under the sea.
미세먼지 고농도 시즌 방진용 마스크에 관한 인식과 착용 행동에서 전국 지역별 차이 및 성차
이주영 ( Joo-young Lee ),박준희 ( Joonhee Park ),백윤정 ( Yoon Jeong Baek ),정다희 ( Dahee Jung ),고예린 ( Yelin Ko ),정재연 ( Jae Yeon Jung ),강주호 ( Juho Kang ),이태경 ( Taekyung Lee ),이예진 ( Yejin Lee ),송은영 ( Eunyoung Son 한국의류학회 2020 한국의류학회지 Vol.44 No.3
The present study investigated regional and sex differences in knowledge, perception, cognition and behavior of fine-dust protective masks for periods of high concentration of fine dust in Korea. A total of 2,012 adults from seven provinces responded to the questionnaire. The results (all p<.05) showed that 78% of respondents considered pollution from China to be the greatest contributor of fine dust. Seoul and Gyeonggi residents more frequently checked fine dust forecasts than other provinces and consulted their smartphone applications to do so more than other residents. Jeju, Gwangwon, and Jeonla residents had less knowledge of KF 80, 94, and 99 masks than residents of other provinces. Gwangwon and Jeju residents had less trust in the effectiveness of protective masks than other residents. Females perceived themselves as unhealthier respiratory, more frequently checked the concentration of fine dust, trusted more the effectiveness of masks, and more frequently wore masks, compared to male respondents. Those who self-identified their respiratory function as poor, more frequently checked fine dust forecasting, and had greater knowledge of masks, which resulted in greater trust in the protective function of masks, and finally had higher wear frequency of masks for days with high concentrations of fine dust.