• 한국전문물리치료학회지
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• 제9권1호
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• pp.43-51
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• 2002

Physiological Cost Index (PCI) of walking has been widely used to predict oxygen consumption in healthy subjects or patients. The purpose of this study was to evaluate the predictability of physiological cost index of walking for the amount of exercise and cardiac function. Walking exercise was conducted in 67 healthy children (age 4-12) with a self-selected comfortable walking speed on the level surface. Walking speed was calculated, and heart rate was measured before and immediately after the walking. PCI was calculated for statistical analysis. The results were as follows; 1) The walking speed tends to increase and PCI of walking tends to decrease with age. There was significant difference in walking speed and PCI of walking among three age groups (p<.05). The change of walking heart rate tends to decrease with age, however, there was no significant difference among three age groups. 2) Linear regression equation between walking speed and age was 'Y (walking speed) = 2.124X (age) + 48.286' ($R^2$=.337), (p=.00). 3) The walking heart rate tends to decrease with age. Linear regression equation between walking heart rate and age was 'Y (walking heart rate) = 143.346 - 2.63X (age)' ($R^2$=.3425), (p=.00). 4) The walking heart rate decreased as body surface area (BSA) increased. Linear regression equation between walking heart rate and BSA was 'Y (walking heart rate) = 149.830 - 27.115X (BSA)' ($R^2$=.3066), (p=.00). In conclusion, these equations and PCI could be useful to quantify the variation of energy expenditure of children with pathological gait when compared with age-matched healthy children.

• 동의생리병리학회지
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• 제27권4호
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• pp.465-470
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• 2013

The purpose of this study is to observe clinically the effects of red onion prescription on type 2 diabetes. The subject of this study were middle-aged people. We measured clinically physiological index, body composition, radial arterial pulse wave before taking medicine and after taking medicine for 4 month (the prescription of red onion). The study results were as follows. In physiological Index, diastolic blood pressure(mmHg)(p<0.001), Fasting blood glucose(mg/dL)(p=0.001), and HbA1c(%)(p<0.001) were decreased significantly after taking medicine. In body Composition, waist-hip ratio(p=0.031), body fat percentage(p=0.006), fat mass(kg)(p=0.005), and muscle mass(kg)(p=0.001) were decreased significantly after taking medicine. Blood Circulation Index, ECO(L/min)(p=0.038) and ECI($L/min/m^2$)(p=0.007) were increased significantly after taking medicine, ECR($dyne^*sec^*cm^{-5}$)(p=0.002), and ECRI($dyne^*sec/cm$)(p=0.001) were decreased significantly after taking medicine for 4 month. The prescription of red onion was showed significant change in physiological index, character of body composition, blood circulation index. Based on this result, it is considered that red onion prescription has the positive effects on type 2 diabetes and blood circulation clinically. In the future, diversified studies on the effects of red onion prescription are needed.

• 동의생리병리학회지
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• 제23권6호
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• pp.1267-1272
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• 2009

The purpose of this study is to survey the importance of items for the physiological and pathological symptoms for estimating a health condition according to Sasang constitution to establish the SHI(Sasangin Health Index) which will reflect the concept of inherent vitality. We surveyed expert opinion with questionnaires from 20 Sasang constitution specialists. The questionnaire was composed of 57 items on physiological and pathological symptoms and specialist opinions. Each item was marked from A to E according to importance in evaluating health state in each constitution, and if the mean score of an item was over 3.0, the item was regarded as important. Important indexes among physiological symptoms were diet, digestion condition, perspiration condition, frequency of defecation, heat and cold response, and temperature of drinking water in Soeumin, pathologic perspiration and defecation condition in Soyangin, repast, perspiration condition, and the amount of drinking water in Taeeumin, and urination frequency in Taeyangin. Important indexes among pathological symptoms were sighing, indigestion, and abdominal pain in Soeumin, oral condition, chest distress, brash, and amnesia in Soyangin, eye condition, palpitation, and edema in Taeeumin, and vomiting and incapacity of the lower limbs in Taeyangin. There are different health evaluating index and priority order in it according to Sasang constitution.

• Safety and Health at Work
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• 제10권2호
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• pp.219-223
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• 2019

Background: Ice cooling vests can cause tissue damage and have no flexibility. Therefore, these two undesirable properties of ice cooling vest were optimized, and the present study was aimed to compare the impact of the optimized ice cooling vest and a commercial paraffin cooling vest on physiological and perceptual strain under controlled conditions. Methods: For optimizing, hydrogel was used to increase the flexibility and a layer of the ethylene vinyl acetate foam was placed into the inside layer of packs to prevent tissue damage. Then, 15 men with an optimized ice cooling vest, with a commercial paraffin cooling vest, and without a cooling vest performed tests including exercise on a treadmill (speed of 2.8 km/hr and slope of %0) under hot ($40^{\circ}C$) and dry (40 %) condition for 60 min. The physiological strain index and skin temperature were measured every 5 and 15 minutes, respectively. The heat strain score index and perceptual strain index were also assessed every 15 minutes. Results: The mean values of the physiological and perceptual indices differed significantly between exercise with and without cooling vests (P < 0.05). However, the difference of the mean values of the indices except the value of the skin temperature during the exercises with the commercial paraffin cooling vest and the optimized ice cooling vest was not significant (P > 0.05). Conclusions: The optimized ice cooling vest was as effective as the commercial paraffin cooling vest to control the thermal strain. However, ice has a greater latent heat and less production cost.

• 지역사회간호학회지
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• 제17권1호
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• pp.5-16
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• 2006

Purpose: The purpose of this study was to show the effect of walking exercise on physiological index, physical fitness, self-esteem. depression. and life satisfaction in institutionalized elderly women aged over 70. Sample and Method: Data were collected from subjects who consented to participate in this program for eight weeks from the 2nd of July to the 27th of August 2005. The subjects were divided into two groups, 26 subjects in the experimental group who had walking exercise and 30 in the control group who did not have walking exercise. The intensity of the walking exercise allowed 50-65% of the maximum heartbeat. Results: The results of the experiment supported the hypothesis that the experimental group would have higher flexibility, left grip strength, sense of equilibrium, self-esteem and life satisfaction and lower depression than the control group. Conclusion: Walking exercise has the effect of decreasing diastolic blood pressure together with improvement in flexibility, left grip strength, sense of equilibrium, self-esteem, depression and life satisfaction for institutionalized elderly women aged over 70. According to the results presented above, walking exercise can be strongly recommended for improving the health of institutionalized elderly women.

• Journal of Nutrition and Health
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• 제25권7호
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• pp.656-667
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• 1992

This study was designed to investigate the effect of environmental an d physiological factors on bone mineral density(BMD) of the lumbar spine(L2longrightarrowL4) in 41 postmenopausal women. There were a positive relationships between BMD of the lumbar spine and monthly income food expenses pocket money energy expenditure(EXP) per day sociocultural EXP activity intensity time of standing and walking or age at first pregnancy. BMD of the lumbar spine was negatively correlated with age Engel index time of sleeping and sitting number of childbirty and children period of breastfeeding or menopausal period. But there were no significant relationships between BMD and physiological domestic EXP body mass index age at menar-che menstruation cycle or age at menopause. The complex interrelations between BMD and these variables were examined using stepwise multiple regression analysis. From this analysis in subject aged 50~59 years. EXP per body weight physiological EXP age at menopause time of sleeping were positively significant independent predictors of BMD. In subjects aged 60~69 years, . time of walking only and in total subjects. EXP per body weight pocket money were positively significant independent predictors ofBMD. This study suggest that EXP and pocket money are major constituents affection lumbar spine BMD in postmenopausal women.

• Journal of Biosystems Engineering
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• 제38권2호
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• pp.163-170
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• 2013

Purpose: The purpose of this study is to provide analysis of physiological, biomechanical responses occurring from the operation to lifting or twist lifting task appears frequently in agricultural work. Methods: This study investigated the changes of physiological factors such as heart rate, heart rate variability (HRV) and biomechanical factors such as physical activity and kinetic analysis in the task of twisting at the waist while lifting. Results: Heart rates changed significantly with the workload. The result indicated that the workload of 2 kg was light intensity work, and the workload of 12 kg was hard intensity work. Physical activity increased as the workload increased both on wrist and waist. Besides, stress index of the worker increased with the workload. Dynamic load to herniated discs was analyzed using inertial sensor, and the angular acceleration and torque increased with the workload. The proposed measurement system can measure the recipient's physiological and physical signals in real-time and analyzed 3-dimensionally according to the variety of work load. Conclusions: The system we propose will be a new method to measure agricultural workers' multi-dimensional signals and analyze various farming tasks.

• 미생물학회지
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• 제30권6호
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• pp.444-449
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• 1992

낙동강 하구생태계에 분포한 종속영양세균의 환경 변화에 따른 군집구조의 변화를 파악하기 위해 총 858 균주를 분리하여 수리학적 방법에 의해 분석하였다. 종의 다양성(H') 은 1.54-3.49 로, 하구언 건설 전의 수치와 큰 차이가 없었으나, 균등성지수(evenness index)(J') 는 0.31-0.80 으로 감소하였다. Physiological tolerance index 중 수온에 대한 지수(P') 는 수심이 얕은 정점에서, pH 와 염분에 대한 $P_{h}$ 및 $P_{s}$ 는 담수와 해수가 교차하는 정점에서 높았다. 우점의 cluster 를 속 (genus) 수준에서 동정한 결과 Aeromonas, Vibrio, Pseudomonas, Acinetobacter-Morexella, Alcaligenes, Flavobacterium, Micrococcaceae, Enterobacteriaceae 등으로 분류되어 하구언 축조 전과 동일한 종류의 세균뷴포를 나타냈으나 그 출현비율은 달랐다. 이와 같은 결과로 미루어 하구언 축조 등에 따른 낙동강 하구역의 환경변화는 분포세균의 종류보다는 생리적 특셩에 영양을 미쳐 특정종의 우점을 나타나게 한 것으로 사료된다.

• 대한인간공학회지
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• 제36권1호
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• pp.23-36
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• 2017

Objective: This paper presents a study to evaluate the WBGT index for assessing the effects of a wide range of outdoor weather conditions on human responses. Background: The Wet Bulb Globe Temperature (WBGT) index was firstly developed for the assessment of hot outdoor conditions. It is a recognised index that is used world-wide. It may be useful over a range of outdoor conditions and not just for hot climates. Method: Four group experiments, involving people performing a light stepping activity, were conducted to determine human responses to outside conditions in the U.K. They were conducted in September 2007 (autumn), December 2007 (winter), March 2008 (spring) and June 2008 (summer). Environmental measurements included WBGT, air temperature, radiant temperature (including solar load), humidity and wind speed all measured at 1.2m above the ground, as well as weather data measured by a standard weather station at 3m to 4m above the ground. Participants' physiological and subjective responses were measured. When the overall results of the four seasons are considered, WBGT provided a strong prediction of physiological responses as well as subjective responses if aural temperature, heart rate and sweat production were measured. Results: WBGT is appropriate to predict thermal strain on a large group of ordinary people in moderate conditions. Consideration should be given to include the WBGT index in warning systems for a wide range of weather conditions. However, the WBGT overestimated physiological responses of subjects. In addition, tenfold Borg's RPE was significantly different with heart rate measured for the four conditions except autumn (p<0.05). Physiological and subjective responses over 60 minutes consistently showed a similar tendency in the relationships with the $WBGT_{head}$ and $WBGT_{abdomen}$. Conclusion: It was found that either $WBGT_{head}$ or $WBGT_{abdomen}$ could be measured if a measurement should be conducted at only one height. The relationship between the WBGT values and weather station data was also investigated. There was a significant relationship between WBGT values at the position of a person and weather station data. For UK daytime weather conditions ranging from an average air temperature of $6^{\circ}C$ to $21^{\circ}C$ with mean radiant temperatures of up to $57^{\circ}C$, the WBGT index could be used as a simple thermal index to indicate the effects of weather on people. Application: The result of evaluation of WBGT might help to develop the smart clothing for workers in industrial sites and improve the work environment in terms of considering workers' wellness.

• 디지털융복합연구
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• 제15권10호
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• pp.281-291
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• 2017

본 연구는 혈액투석환자의 질병 불확실성, 우울, 생리적 지표와 기본심리욕구 와의 관계성을 파악하기 위한 연구로 연구대상자는 J도에 위치한 2 개의 대학부속병원과 2곳의 병원 투석센터에서 160명을 편의 추출하였다. 자료 수집은 구조화된 질문지를 이용한 일대일 설문조사와 의무기록 자료를 통한 생리지표를 이용하여 수집하였다. 자료 분석은 SPSS/WIN 18.0프로그램으로 t-test와 ANOVA, 다중회귀분석 방법을 이용하였다. 연구결과 기본심리욕구는 불확실성 (r=-.464, p<.001)과 우울증 (r=-422, p<.001) 사이에 음의 상관관계가, 기본심리욕구의 하위 요인인 관계성은 질병불확실성, 우울, 생리지표와 음의 상관관계가 있었다. 또한 혈액투석환자의 기본심리욕구에 대하여 질병 불확실성(${\beta}=-.345$)과 우울(${\beta}=-.279$), 생리지표(${\beta}=-.117$)는 29%의 설명력을 보였다. 생리지표, 질병 불확실성 및 우울증은 혈액 투석 환자의 기본심리욕구에 영향을 주었습니다. 따라서 혈액투석환자의 불확실성을 인생관에 긍정적으로 통합시켜 삶을 재설정하고자 하는 심리적 지지와 자율성, 유능감, 관계성의 기본심리욕구 증진을 위한 간호전략과 프로그램 개발이 필요하다.