• 산업경영시스템학회지
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• 제22권52호
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• pp.211-219
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• 1999

Sleeping is important activity in bedroom and it takes one third of our lifetime. The body pressure distribution on bed has been considered as one of the most important factors affecting sleeping comfort. The measurement contact pressure has been applied to design seat, mattress, shoes, etc., for prevention of pressure sores and improvement of products. This paper discusses the recognizing rule of sleeping posture using contact pressure. Subjects' ages are ranged from twenties to fifties. They include 29 males and 35 females. Body pressure distribution is measured in the state of stable bed when subject lies on his/her back, on his/her side and on his/her face. We made recognizing rules of sleeping posture through statistical analysis; ANOVA and regression analysis, qualitative analysis.

• Asian-Australasian Journal of Animal Sciences
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• 제31권11호
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• pp.1828-1832
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• 2018

Objective: Environmental change is one of the stressful events in livestock production. Change in environment disturbs cow behavior and cows require several days to regain a stable behavioral pattern. Sleeping posture (SP) and lying posture (LP) have been used as indicators for animal that are relaxed and well-acclimated to their environment. The aim of this study was to examine the time required by Japanese black cows for stabilization of SP and LP after moving into new environment. Methods: Seven pregnant Japanese black cows were used. Cows were moved into new tie-stall shed and their sleeping and lying posture measured 17 times during 35 experimental days. Both SP and LP were detected by accelerometer fixed on middle occipital and hip-cross, respectively. Daily total time, frequency, and average bout of both SP and LP were calculated. Results: Daily SP time was the shortest on day 1 and increased to the highest on day 3. It then decreased until day 9, after that stabilized about 65 min/d till the end of experiment. Daily LP time changed in same manner as daily SP time. The average SP bout was the longest on day 1, and then decreased to stable level on day 7. On the other hand, the average LP bout was the shortest on day 1, and it increased to stable level on day 7. Conclusion: These results showed that pregnant Japanese black cows needed 1 week to stabilize their SP. However, there were different change patterns between the average SP and LP bout, even though the change pattern of daily SP and LP time were similar.

• 한국컴퓨터정보학회논문지
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• 제15권6호
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• pp.11-18
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• 2010

본 논문에서는 3축 가속도 센서를 이용하여 영유아기의 아기들의 수면 자세 모니터링을 할 수 있는 장치를 제작하였다. 수면 모니터링에 관한 기존에 시행한 연구는 실제 수면실에 카메라를 설치하여 수면하는 동안 카메라로 수면자세를 계속 녹화하여 수면 자세를 모니터링을 하는 방법과 압력센서를 사용하여 수면 자세를 모니터링 하는 연구가 있다. 이러한 연구는 수면 시 비교적 정확한 수면자세를 확인 할 수 있다는 장점이 있지만, 공간 및 장소 제약과 센서나 카메라의 설치, 고가의 비용 등의 단점을 가지고 있다. 또한 영유아기의 아기들에게 사용에 있어서는 불편 할 뿐 아니라 적용하기에도 어려움이 많다. 이번에 제안하는 방법은 3축 가속도 센서를 이용하여 X축,Y축,Z축의 값을 출력 받아 수면 자세의 파악 및 엎드려 있는 수면 자세에 대하여 부저를 이용하여 경고음을 나타내주는 방법이다. 이 방법은 3축 가속도 센서를 사용하여 데이터를 측정하고 Bluetooth를 이용하여 무선 전송함으로써 수면자세를 실시간으로 모니터링 할 수 있다. 또한 이렇게 수집된 데이터를 바탕으로 영유아기 아기들이 엎드린 자세로 수면시 발생 할 수 있는 질식 등에 안전하게 대처할 수 있다.

• 대한임베디드공학회논문지
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• 제17권1호
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• pp.1-7
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• 2022

The number of patients with many complications grows with the increase of aging population. As the elders and severely ill patients spend most of their time in bed, it leads to Pressure Injuries (PI) such as bedsores. Unfortunately, there is no method to automatically detect changes in patient's posture which leads to the need for a caregiver every set of times when the patient needs to be moved. Many studies are conducted to solve this inefficient problem. Yet, these studies require costly devices or use methods that disturb patient's sleeping environment. Those methods are mostly hard to implement in practice due to these reasons. We propose a method to detect posture using a three-axis acceleration sensor from the wrist band. We developed a wearable watch that measures sleep-related data. We analyzed 40 people's sleep data with a wearable module and watch to measure their postures such as supine, left-side, and right-side. Then, we compared the classified posture from the watch with the wearable module and achieved 90% accuracy. Therefore, we concluded that only by using the wearable watch, we can detect the sleeping position without any new equipment or system to diagnose the patients without discomfort during their daily lives.

• 한국콘텐츠학회논문지
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• 제18권2호
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• pp.378-387
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• 2018

최근 4차 산업 혁명이 도래하면서 헬스케어 서비스의 분야가 다시금 주목받고 있다. 그에 따라, 스마트제품들을 통한 개인 맞춤화 된 의료 시스템이 다양한 형태로 등장하고 있다. 웨어러블 테크 및 센서 시스템의 활용으로 타인의 도움 없이 스스로 언제 어디서든지 건강관리와 모니터링이 가능해졌다. 하지만, 임산부를 위한 헬스케어 서비스는 매우 부족한 실정이다. 저출산으로 인하여 산부인과 수도 격감하면서 몸이 불편한 임산부를 둘러싼 환경은 더욱 열악해지고 있다. 임산부는 임신으로 인하여 편안한 수면 세를 취하기 힘들다. 소음, 온도, 습도 등 다양한 환경적 요인이, 더불어 임산부 수면의 질을 저하시켜 행복한 태교를 저해한다. 본 연구는 이러한 문제점을 해결하고자 임산부의 건강을 위해 좋은 수면 자세의 정보와 향상된 수면 환경을 제공하여 수면관리가 가능한 UI 디자인 개발에 목적이 있다. 이를 통해 4차 산업시대의 센서 기술을 적용하여 임산부의 수면의 질과 삶의 질을 극대화 시켜 줄 것을 기대한다.

• 감성과학
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• 제2권1호
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• pp.95-103
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• 1999

침대에서의 체압분포는 수면 안락감에 중요한 영향을 미치는 요인중의 하나로 고려되어져 왔다. 체압분포는 사람의 몸무게에 의하여 침대와 누운사람 사이의 접촉면에서 발생하는 압력의 분포를 말한다. 안락한 체압분포 패턴을 결정하기 위하여 사용자가 침대 8부분의 높이를 조절할 수 있는 가변침대를 사용하였다. 체압분포 측정은 각 수면자세(바로 누운 자세, 옆으로 누운 자세, 엎드린 자세)에서 가변침대의 초기상태와 피실험자가 편안한 체압분포 패턴을 유지하도록 높이를 조절한 상태에서 이루어졌다. 본 연구에서는 각 수면자세에서 체압비와 선호하는 체압비의 특징을 알아보았다. 본 연구의 결과를 요약하면 다음과 같다. - 각 수면자세에서 엉덩이 부분의 체압비가 가장 높았으며, 바로 누운 자세는 40% 이상의 체압비가 엉덩이에 집중한다. - 각 수면자세에서 전체적으로 머리와 다리의 높이가 다른 부분보다 높은 것을 선호하는 경향을 나타난다. - 바로 누운 자세에서는 유추를 기준으로 신체가 W형이 되도록 머리, 요추, 대퇴부분의 높이를 올리는 것을 선호한다. - 엎드린 자세는 머리와 다리부분의 높이를 증가시킴으로써 신체이 곡선이 U형이 되도록 하는 것을 선호한다.

• 턱관절균형의학회지
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• 제11권1호
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• pp.37-40
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• 2021

본 증례에서는 목과 어깨의 자세 틀어짐이 육안으로 관찰되는 환자에게 턱관절음양균형요법으로 긍정적인 자세변화의 효과를 얻어 보고하는 바이다.

• 대한물리치료과학회지
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• 제3권4호
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• pp.207-214
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• 1996

Main cause of low back pain is a poor posture. Most low back pains are due to a poor posture. The poor posture induces muscle tension and finaliy low back pain. The poor posture arehabitually trained from the childhood by the environmetal factors. In general, maintaining good posture during working and sleeping hours are the first line of defence against back pam. (1) Supine posture is the easiest posture that relaxes and fixes muscles. Supine posture is thus a starting position for on exercise. Lying down releases the weight pressures of head and shoulder and thus body can be relaxed and extended which are helpful for treating back pain. However, supine posture can increase the pressure in ribcage posture aspect and disphragram due to visceral oragans. (2) Sitting in one position for a long time results in fatigue and relaxation of spinal muscies. Finally, body strength is weakened and sitting posture will become poor. If this poor posture continues for a longer time, pain will be accompanied due to overelongation of muscle ligaments. The habitual poor posture could induce intervertebral disc distortion. If the intervertebral disc is damaged, sitting in one position or movement causes pain. (3) Abnormal lumbar curve induces the tention of abdominal muscle and paravertebral muscle groups as well as tention of lower limb muscle group connected to pelvis. For a person with weak body strength, muscle relaxation increases curvature in lumbar, chest and cervical regions. This will induce a pelvic anterior tilting of the imaginary line between A. S. I. S. and P. S. I. S. Hip joint extensor muscle acts on releasing the pelvic anterior tilting. Contrections of hamstring muscle and femoral muscle recover the imaginary line between A.S.LS. and P.S.I.S. from pelvic anterior tilting. thus, contraction of rectus abdominis muscle are required to maintain the normal lumbar curve.

• 부모자녀건강학회지
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• 제6권1호
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• pp.70-81
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• 2003

The otitis media has the highest rate of occurrence in 6-36 month after birth, and relatively high rate of occurrence to six years old. It is one of major cause for hearing loss problem because of its high rate of recurrence. The researcher observed at bed that feeding posture and feeding habit at night have some relationship with occurrence of otitis media. I found that medical research in this area was very weak, and it caused her to concentrate her research on the topic. This paper was undertook a retrospective case-control study to find out the relationship between the mode of feeding and the occurrence of otitis media among the otitis media patients and the healthy persons. As the controling groups, the researcher chose fifty eight mothers whose children received the treatment of otitis media(6-36 months after birth) from the pediatrics clinic of two general hospitals in Seoul, as the patient group, and forty five mothers who consulted with their child to well baby clinic at the general hospital and kindergarten in Seoul as the control group. The results of the survey can be summarized as followed : 1. "Otitis media patient group may have more lying posture mothers while feeding than the healthy control group". The first hypothesis is supported by the fact that the children who have lying posture feeding habit mothers are more easily exposed to otitis media than those who have sitting posture feeding habit mothers as the analysis show : $X^2=8.142$, p = .017 2. "Otitis media patient group may have higher rate of sleeping habit with milk bottle on the month at night than the healthy control group does". The second hypothesis was supported by the fact that the patients group has higher rate of expected sleeping habit than the healthy group dose as the analysis show : $X^2=4.35$, p = .037 3. "Otitis media can be found more in the artificial feeding group than in the healthy children group". The hypothesis is rejected by the analysis, $X^2=1.550$, p = .416. Though the hypothesis is not supported by this research, we need to encourage mothers to feed mother's breast milk on the ground that healthy group has mother's milk feeding tendency, and the best food for infants is their mother's milk, and psychological-sociological effects of breast feeding os quite good for children. It will improve the health of infants. It can be summarized as follows : Otitis media is more concerned with posture of feeding and night feeding habits than feeding modes. On the basis of this survey, feeding education problem for mothers of infants need to be developed. In the education, sitting-embracing posture of feeding, mother's breast feeding, and prohibition of children's lying posture feeding at night need to be emphasized.

• The Journal of Korean Physical Therapy
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• 제3권1호
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• pp.123-149
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• 1991

This study has been attempted to be helpful for the back rehabilization of Korean workers by analyzing the general, occupational, social aspects of low back pain and to identify possible risk factors for back pain in White and Blue collar workers. The primary data were collected from 380 workers in Seoul city by means of a Questionnaire with random which was distributed from March 10 to 31, 1990. For the test of statistical significance, chi-square analysis was used to compare the back pain characteristics between above two groups. The results were as follows : 1. The incidence of low back pain in all walkers studied was $79.7\%$. The incidence of Blue collar with low back pain $(87.2\%)$ was higher than that of White collars $(75.0\%)$. 2. With regard to the relationship of back pain to the occupational characteristics, statistically significant differences were observed between workers with and without back pain concerning the job factors on work-time, job satisfaction, mental stress, chair fittness, work posture, work rotation, weight lifting, monotonous repetitive movements, vibration, and heavy noise (p<0.05). 3. With regard to the relationship of back pain to the social characteristics, there were no differences with respect to having car, personality types, drinking habits, and leisure-time activities. However, significant differences were showed between no pain and pain groups for the using bed, sleeping posture, traffic time amount, walking health state, smoking habits, and physical exercise (p<0.05). 4. The comparative analysis of back pain related to work factors showed highly significant differences with respect to mental stress, chair fittness, work posture, trunk rotation, weight lifting, monotonous repetitive work in White collar group (p<0.01) ; and job satisfaction, mental stress, trunk rotation, weight lifting, monotonus repetitive work, exposure to vibration and heavy noise in Blue collar group(p<0.01). 5. The comparative analysis of social factors in two groups showed differences with respect to the using bed, sleeping posture, walking amount, health state, physical exercise, smoking habits in White cellar group (p<0.05) ; and walking amount, traffic time amount, health state, smoking habits, physical exercise in Blue cellar group (p<0.05). 6. In regard to the general aspects of back pain between two groups, there were differences concerning etiolgy of back pain, counselling partners, treatment types, and sick-leaves(p<0.05), except pain duration, and awareness of back pain.