• Korean Journal of Community Nutrition
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• v.9 no.4
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• pp.511-518
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• 2004

This study was designed to compare general characteristics and dietary habits between volunteers for a nutrition survey and non-volunteers using a questionnaire. Volunteers were recruited by advertising on the homepage of a university to assess nutritional status by examining dietary intake for three days and blood analysis. Non-volunteers were selected from some classes not related to nutrition. There were no significant differences in sex, monthly allowances, eating-out cost, drinking and exercise between the two groups, while the proportion of self-boarding was higher in the volunteer group than in the non-volunteer group, and smoking rate of volunteers was approximately 2.4 times lower than that of non-volunteers. Volunteers were less concerned about their diet than non-volunteers. No significant differences in concern about health, considering factors in their diet, self-evaluation of their diet, learning experience about nutrition, and vitamin/mineral supplement use were observed. The frequency and the place of eating-out for dinner were significantly different between the two groups. More proportions of volunteers tended to eat regularly and eat breakfast. Volunteers consumed seaweeds more frequently, and milk, fruits and fast foods less frequently than non-volunteers. Our results indicate that some characteristics and dietary habits of volunteers are different from those of non-volunteers. However, we could not show that volunteers were more interested in their diet and had desirable dietary habits than non-volunteers. Further research on the characteristics of volunteers who participate in nutrition survey may be helpful to interpret and generalize the survey results.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.99-100
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• 2007

우리 일상생활과 밀접한 CDMA 휴대폰의 사용인구가 급증하면서 최근 전 세계적으로 휴대폰 전자파의 유해성에 대한 관심이 고조되고 있다. 본 연구에서는 GSM 및 기타 다른 통신방식을 대상으로 한 기존의 연구와 달리 CDMA 휴대폰을 사용할 때 방출되는 전자파가 인체의 심혈관계에 미치는 영향을 조사하였다. 청소년 집단(21명, 연령 $15.9{\pm}2.3$세)과 성인집단(21명, 연령 $25.9{\pm}5.6$세) 자원자를 대상으로 CDMA 휴대폰 사용 중의 말초 혈류량, 심박수 외에 혈압의 변화를 비 침습적으로 측정하였다. 청소년과 성인 간, 그리고 각 집단 내에서 휴대폰 전자파 노출에 따른 말초 혈류량, 맥박수 및 혈압의 변화를 통계적으로 분석한 결과, 청소년과 성인 모두 말초 혈류량, 맥박수 및 철압에 있어서 통계적으로 유의한 차이를 보이지 않았다. 결론적으로 CDMA 휴대폰 전자파 노출은 인체의 심혈관계에 직접적인 영향을 미치지 않는다고 사료된다.

• Journal of the Korea Society of Computer and Information
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• v.26 no.5
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• pp.55-60
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• 2021

This study aims to investigate the effects of 4 weeks visual biofeedback training on the knee joint angle and muscle activities of lower extremity. The participants in this study were 15 volunteers with hyperextended knee. To improve the hyperextended knee, visual biofeedback training was used during 4 weeks. The training is an exercise to maintain the balance between the anterior weight bearing and posterior weight bearing of the plantar foot. The knee joint angle significantly increased and the muscle activity of tibialis anterior was significantly decreased after visual biofeedback training. It was confirmed that visual biofeedback training of correcting hyperextended knee through the information on the plantar pressure distribution has a therapeutic effect.

• Journal of agricultural medicine and community health
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• v.46 no.2
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• pp.53-66
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• 2021

목적: 농촌 지역사회 기반의 허리 근력 강화 운동 프로그램이 운동과 허리 건강에 대한 개인의 태도 및 믿음에 미치는 효과를 평가하고자 하였다. 방법: 강원도 지역 네 개의 농촌 마을에서 가벼운 허리 통증이 있는 79명의 여성 자원자(42-76세)들을 운동군(n=40)과 대조군(n=39)으로 마을단위로 배정하였다. 운동군에서는 지역사회 기반의 허리강화 운동 프로그램(주당 3회, 8주간)이 시행되었고 대조군에는 일반적인 건강 관리에 대한 강의가 제공되었다. 등척성 허리 신전 근력과 허리 통증 관련 장애, 운동에 대한 태도, 허리 질환에 대한 위협인지, 운동의 자기 효능감을 중재전과 중재후 1, 2개월째 측정하였다. 결과: 운동군에서 2개월후 허리 신전근력은 뚜렷이 증가하였으며 허리 통증 관련 장애도 유의미하게 감소하였다. 운동에 대한 태도와 허리 질환에 대한 위협 인지는 운동군에서 증가하였으나 대조군에서는 변화가 없었다. 운동의 자기효능감은 양군에서 같이 증가하였으나 운동군에서 그 정도가 더 뚜렷했다. 결론: 농촌 지역 여성들을 대상으로 한 허리 근력 강화 운동 프로그램은 허리 통증으로 인한 장애를 감소시켰고 운동의 효과에 대한 태도와 믿음을 변화시켰다.

• Journal of Environmental Science International
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• v.4 no.3
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• pp.277-284
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• 1995

There has been an increased awareness of the need to confirm the chloroform exposure associated with using chlorinated household water. Ten of a 30-minute tub bath were normally taken by two volunteers in a bathroom of an apartment. Chloroform concentrations were measured in bathing water and bathroom air, and exhaled breath of the subjects prior to and after bathing. Bathing using chlorinated tap water resulted in a chloroform exposure and caused a body burden. Based on the difference of chloroform concentrations between breath samples collected prior to and after bathing, the chloroform body burden from a 30-minute bath was estimated to be about 8 to 26 folds higher than that prior to the bath. The mean water and bathroom air chloroform concentrations measured to evaluate the body burden were $9.4\mu\textrm{g}/l$ and TEX>$14.9\mu\textrm{g}/m^3$, respectively. The chloroform level of the bathroom air was 각 to 130 times higher than that of the living-room air. The relationship between the bathroom air and the corresponding breath chloroform concentrations were significant with p=0.03 and $R^2=0.47$.

• Journal of Environmental Science International
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• v.4 no.3
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• pp.125-125
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• 1995

There has been an increased awareness of the need to confirm the chloroform exposure associated with using chlorinated household water. Ten of a 30-minute tub bath were normally taken by two volunteers in a bathroom of an apartment. Chloroform concentrations were measured in bathing water and bathroom air, and exhaled breath of the subjects prior to and after bathing. Bathing using chlorinated tap water resulted in a chloroform exposure and caused a body burden. Based on the difference of chloroform concentrations between breath samples collected prior to and after bathing, the chloroform body burden from a 30-minute bath was estimated to be about 8 to 26 folds higher than that prior to the bath. The mean water and bathroom air chloroform concentrations measured to evaluate the body burden were $9.4\mu\textrm{g}/l$ and TEX>$14.9\mu\textrm{g}/m^3$, respectively. The chloroform level of the bathroom air was 각 to 130 times higher than that of the living-room air. The relationship between the bathroom air and the corresponding breath chloroform concentrations were significant with p=0.03 and $R^2=0.47$.

• Sleep Medicine and Psychophysiology
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• v.10 no.2
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• pp.108-112
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• 2003

Objectives: The purpose of this study is to investigate the psychophysiological effects of total sleep deprivation by using auditory event-related potentials. Methods: Twenty four healthy college students (18 men, 6 women) participated in this study. The subjects remained awake for 37 hours under continuous surveillance. In the morning and the evening of two consecutive study days, auditory event-related potentials were checked. Results: The latencies of P300 and N200 were significantly prolonged (p<0.001) and their amplitudes decreased (p<0.05) as a consequence of sleep deprivation. The amplitude of P200 was significantly increased during sleep deprivation (p<0.05). However, there was no significant change in the latency and amplitude of N100. Conclusion: Among the components of auditory event-related potentials, P300 and N200 are good indicators of sleep-deprived status. Further investigation is necessary to elucidate the neurophysiological mechanisms of these findings.

• Journal of the Korean Society of Radiology
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• v.9 no.7
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• pp.501-508
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• 2015

There are various Intercondyloid fossa X-ray taking methods. The methods carried out in clinics are Holmblad method, Camp-Conventry method, and Beclere method. Taking image of Intercondyloid fossa is carried a lot as basic examination for diagnosis related to simple fracture and cruciate ligament. Considering the condition and pains of patients, safe method is chosen but because Holmblad method can cause pains to knee part adhering to cassette, it is not easily used. In this study self-produced plane circular cone was attached to a cassette and in the posture for Holmblad method questionnaires of 100 applicants were analyzed to understand cognition on alleviation of pains, and the concentration of imge quality by scattering rays was measured with densitometer by taking human body phantom with X-ray. As a result, in the posture for Holmblad method, cognition on pains was alleviated by average 99%, and the change of concentration of X-ray film taken using phantom by scattering rays decreased statistically significantly compared to the cassette which did not use self-produced plane cone, therefor it is thought that the method can be valuably used in clinics.

• Korean Journal of Human Ecology
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• v.20 no.2
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• pp.401-412
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• 2011

국가들 간의 차이는 국제적 소비자행동 연구의 근간이 되며 글로벌기업의 전략 구상에 중요한 변수로 작용한다. 본 연구에서는 의복충동구매에 대한 국가간 이해를 증진시키기 위해 한국과 미국의 대학생들을 대상으로 의복충동구매와 구매에 영향을 미치는 쇼핑감정에 차이가 있는지를 살펴보고 쇼핑감정이 의복충동구매에 어떠한 영향을 미치는지를 살펴보고자 한다. 선행연구를 바탕으로 질문지를 개발하였고, 한국(N = 412)과 미국(N = 290) 각각의 대도시에 위치한 대학교를 무작위 선정하여 정규강의시간 전후에 자원자들을 대상으로 자료를 수집하였다. 분석 결과, 미국대학생들에 비해 한국대학생들은 구체적 구매의도가 없는 상태에서 점포를 둘러본 후에 구매할 것을 결정하는 등의 계획적 충동구매나 다른 목적으로 점포에 들렀다가 계획에 없었던 필요한 것 혹은 기억나는 의류제품을 구매하는 등의 상기된 충동구매를 더 많이 하는 경향이 있었다. 그러나 미국 대학생들의 경우, 구매의도는 없었으나 새로운 스타일이나 최신 의류제품을 보았을 때 충동적으로 구매를 하는 패션지향적 충동구매가 한국대학생들에 비해 더 많이 나타나는 경향이 있었다. 또한 소비자들이 쇼핑할 때 느끼는 쇼핑감정 중 긍정적인 쇼핑감정은 미국대학생들이 한국대학생들보다 더 많이 느끼는 것으로 나타났다. 한국과 미국 대학생들은 모두 쇼핑과정에서 긍정적 감정을 느낄 때 여러 유형의 의복충동구매 가능성이 높게 나타났으나 부정적 쇼핑감정이 발생했을 때는 한국 대학생들만이 패션지향적인 충동구매를 하는 경향이 있었다. 이러한 결과는 의류제품을 쇼핑할 때 두 나라 대학생 모두에게 쇼핑감정 특히, 긍정적 감정은 구매의도를 자극하여 충동구매를 조장하는 중요한 역할을 담당함을 보여주었다. 이러한 연구결과는 의복충동구매와 쇼핑감정 간의 관계를 이해하고자하는 연구자들과 리테일러들에게 필요한 정보들을 제공해준다.

• The Korean Journal of Pain
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• v.22 no.1
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• pp.39-46
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• 2009

Background: Ketamine has an indirect sympathetic stimulation effect. We investigated heart rate variability (HRV) as a marker of cardiac autonomic function after a target controlled infusion (TCI) of ketamine with a plasma concentration of 30 or 60 ng/ml. Methods: In 20 adult volunteers, the mean of the R wave to the adjacent R wave interval (RRI), the range of RRI, the root mean square successive difference of intervals (RMSSD), the total power, the low frequency (LF, 0.04-0.15 Hz) power, the high frequency (HF, 0.15-0.4 Hz) power, the normal unit HF (nuHF), the normal unit LF (nuLF), the LF/HF ratio and the SD1 and the SD2 in the Poincare plot were measured before and after a TCI of ketamine. We observed for any psychedelic symptoms or sedation. Results: There were no differences in the mean and range of the RRI, RMSSD, total power, LF power, HF power, nuHF, nuLF, LF/HF ratio, SD1 and SD2 between before and after ketamine administration. The OAA/S score was higher and there were more psychedelic symptoms with a 60 ng/ml plasma concentration than with a 30 ng/ml plasma concentration. Conclusions: This study did not show any effect of a low plasma concentration of ketamine on the autonomic nervous system.