• Physical Therapy Rehabilitation Science
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• 제11권4호
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• pp.591-597
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• 2022

Objective: The sitting and standing are motions that correspond to the previous stage of rehabilitation to go to walking for daily life. The purpose of this study was to measure task times, path length of the center of pressure (COP) and activity on the vastus femoris muscle using surface electromyography (EMG) when standing up and sitting down. Design: One group cross-sectional design Methods: Fifteen elderly subjects (8 male, 7 female) participated. All subjects were tested three times according to four assist levels (non-assist, lower, middle, and maximal assist) using adjusts the length of spring at sit-to-stand and stand to sit on a chair. The task duration, and COP path length were recorded for the balance function on the Nintendo Wii fit board. The activity of the rectus femoris muscle was recorded on both legs using surface EMG. Results: The results showed that the task duration of the sit-to-stand and stand-to-sit were significantly increased compared to without assist (p<.05). The activation of the rectus femoris muscle more significantly decreased compared to without assistance at standing or sitting (p<.05). Conclusions: The assistive chair showed less quadriceps muscle activation during sitting and standing compared to without assistance. We suggest that our assist-standing chair can help with activities of daily living such as standing up and sitting down movements adjusting the spring length for control assist level by safely.

• 한국의류학회지
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• 제33권5호
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• pp.775-781
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• 2009

This study was to investigate the distribution of the garment pressure in daily wearing and in ordinary posture. Ninety-nine college women students majoring the fashion were participated for this study. IBP questionnaire, garment pressure, personal preferring pressure sensations(questionnaire), and subjective garment pressure sensations were measured. There were no significant differences between the data of 2003 and those of 2005. Participants preferred T-shirts and jeans and also preferred slightly fitted style to the loose style. They were classified with the high garment pressure group and the low garment pressure group. Garment pressure from lower garments were usually higher in the high garment pressure group than in the low garment pressure group. There was no significant differences in the upper garments weights between two groups. The lower garments weight of the high garment pressure group showed $533.3{\pm}182.11g/m^2$ and that of the low garment pressure group was $453.4{\pm}181.6g/m^2$. There was a significant difference in the lower garments weight between two groups(p<.01). In a standing posture, there were no significant differences among the distribution of garment pressure. There was a significant garment pressure differences between sitting on a chair and sitting on the floor(p<.001). Participants included in the low garment pressure group felt a higher garment pressure than participants included in the high garment pressure group.

• 패션비즈니스
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• 제10권1호
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• pp.31-40
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• 2006

We studied relation between the clothing pressure applied by types of brassiere, postures, feeling of tightness. The main results were summerized as follows; 1. The research subjects of this study were 9 who rate of body fat was borderline and degree of fatness was normal. As a result of clothing pressure, the most prefered value was $36.86g/cm^2$ on sensor 2 in standing position and the next was $34.76g/cm^2$ on sitting position. Furthermore, The maximum value of sensor 2 was $59.08g/cm^2$ (in standing), $57.93g/cm^2$ (in sitting). On the other hand, The average clothing pressure of bra C type was $23.67g/cm^2$ 2. The study of feeling of tightness applied by bra type was high in order of C

• 한국전문물리치료학회지
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• 제25권3호
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• pp.60-67
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• 2018

Background: Progressive muscle weakness is aggravated not only in the skeletal muscles but also in the respiratory muscles in many patients with neuromuscular diseases (NMD). Inspiratory muscle training (IMT) has been reported as therapy for pulmonary rehabilitation to improve respiratory strength, endurance, exercise capacity, and quality of life, and to reduce dyspnea. Objects: The purpose of this study was to determine the effect of playing harmonica for 5 months on pulmonary function by assessing the force vital capacity (FVC), peak cough flow (PCF), maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), and maximal voluntary ventilation (MVV) in patients with NMD. Methods: Six subjects with NMD participated in this study. The subjects played harmonica once a week for 2 hours at a harmonica academy and twice a week for 1 hour at home. Thus, training was performed thrice a week for 23 weeks. The examiner assessed pulmonary function by measuring FVC in the sitting and supine positions and PCF, MIP, MEP, and MVV in the sitting position at the beginning of training and once a month for 5 months. Results: Both sitting and supine FVC significantly increased after playing harmonica (p=.042), as did MIP (p=.043) and MEP (p=.042). Conclusion: Playing harmonica can be used as an effective method to improve pulmonary function in patients with NMD.

• 대한산업공학회지
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• 제39권3호
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• pp.192-197
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• 2013

In this study, it is investigated the relationship between sitting discomfort and major design variables of lumber support, such as prominence, height and width through volunteer tests. Korean $50^{th}$ percentile males and American $50^{th}$ percentile males are recruited among 36 to 45 years old peoples who have driving experiences and have no back pain during the past 12 months. Subject ratings are asked by changing design variables randomly. Body pressure and lumber position changes are also measured as object measures. And correlation among subject ratings, object measures and three design variables are analyzed using statistical analysis. As a result, it is revealed that prominence is the most dominant factor that correlates to the discomfort strongly for both-Koreans and Americans and contribution of other two variables are very low.

• 재활복지공학회논문지
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• 제11권3호
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• pp.207-214
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• 2017

몸통안정성에 문제가 발생하면 허리에 통증이 발생된다. 허리 불안정성을 해소하기 위한 몸통안정화운동 방법 중 하나인 복부드로우인기법(ADIM)은 복부안정화근육 중 선행적자세조절과 관련된 배가로근에 대한 선택적인 수축을 유도하는 운동법이다. ADIM은 일반적으로 바로누운자세에서 허리 밑에 압력생체되먹임장치(PBU)을 적용하여 시각적되먹임을 한 상태에서 실시하는데 이러한 자세는 앉은자세에 비해 기능적이지 못하다. 본 연구에서는 바로누운자세와 앉은자세에서 실시하는 ADIM의 효과를 알아보기 위해 31명의 건강한 남녀를 대상으로 무선 근전도를 이용해 배곧은근(RA), 배바깥빗근(EO), 배가로근/배속빗근(TrA/IO), 그리고 척추세움근(ES)에 대한 근활성도를 비교하였다. 본 연구 결과 RA와 EO에서는 두 자세 간에 유의한 차이가 없었으며 TrA/IO와 ES에서는 두 자세 간에 유의한 차이가 나타났다. 또 RA에 비해 TrA/IO의 활성도가 높게 나타나 ADIM로 인한 몸통안정화는 두 자세 모두에서 효과적으로 나타났으며 반면 TrA/IO와 ES는 앉은 자세에서 더 높은 활성도를 보여 자세 안정화 근육의 활성도가 앉은 자세에서 더 증가한 것으로 사료된다. 따라서 일상생활에서 보다 쉽게 적용할 수 있는 앉은 자세의 ADIM은 허리안정성 향상에 유용할 것이다.

• 한국엔터테인먼트산업학회논문지
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• 제14권3호
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• pp.475-482
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• 2020

허리 안정화 근육들을 강화하기 위해 실시하는 복부 드로우인 기법(ADIM)은 복부내압을 상승시켜 배가로근(TrA)과 배속빗근(IO)을 선택적으로 수축시키는 운동법이다. 본 연구는 일상생활에서 많이 사용하는 자세인 앉은 자세에서 ADIM을 실시했을 때 파악력에 어떠한 영향을 미치는지 확인하고자 하였다. 정상 성인 30명을 대상으로 앉은 자세에서 ADIM을 실시하도록 한 후 실시하지 않은 상태와 실시한 상태에서 각각 파악력을 측정하여 앉은 자세에서 실시한 ADIM이 파악력에 미친 영향과 가장 많은 영향을 발휘하는 근육이 있는지 알아보았다. 측정에 동원된 근육은 RA, EO, IO/TrA, 그리고 ES로 ADIM 적용 시 가장 활성화된다고 알려진 허리 안정화 근육들이다. 연구 결과 앉은 자세에서 실시한 ADIM이 실시하지 않은 자세 보다 모든 근육들의 활성도가 유의하게 증가하였으며 파악력 또한 유의하게 증가하였다. 측정된 각 근육의 차이값을 비교해 어떤 근육이 파악력에 더 큰 영향을 알아보았으나 유의한 상관관계를 나타낸 근육은 보이지 않았다. 이는 특정 근육이 파악력에 영향을 미친 것이 아니라 복부내압의 증가가 파악력에 영향을 미친 것으로 사료된다. 따라서 앉아서 오랜 시간 생활하는 일반인들의 일상생활에 파악력 증가와 허리 안정성 향상을 위한 치료적 중재방법에 활용할 수 있을 것으로 제안할 수 있겠다.

• 한국정밀공학회지
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• 제24권7호
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• pp.126-132
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• 2007

Pressure-induced decubitus is a serious disease among the elderly people. Interface pressure occluding vascular perfusion is known to be a cause of decubitus. Therefore, it is essential to quantify the relationship between vascular perfusion and interface pressure among the elderly people to understand more about decubitus. Nine healthy elderly people (57.8$\pm$ 5.6 years, 63.3$\pm$ 7.0kg, 1.68$\pm$ 0.05m) were participated. Three healthy young people (31.7$\pm$ 3.2 years, 74.7$\pm$ 8.4kg, 1.75$\pm$ 0.04m) were also examined to be compared with the elderly group. Capillary vascular perfusion on the ischial tuberosity was recorded in the sitting posture as pressures were applied from 15mmHg to 135mmHg. The average interface pressure to occlude vascular perfusion (the average occlusion pressure) under the ischial tuberosity was 115.7mmHg in the elderly group. This value was not significantly different from the average occlusion pressure of the young group. Obesity effect on the occlusion pressure was investigated among the elderly group. The result was not significantly different between the obesity and the normal group in this study. This is a preliminary study to unveil the complicated cause of pressure-induced decubitus associated with occlusion of vascular perfusion. More subjects are required for the future study.

• 대한간호학회지
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• 제33권2호
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• pp.200-209
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• 2003

Purpose: This study was to identify the prevalence of orthostatic hypotension and its association with risk factors of orthostatic hypotension aged over 60 in Seoul and Chungju, Korea. Method: The data were collected from the 22th of August, 2000 to the 7th May 2001. The participants were 74 community-dwelling aged who could stand up from sitting position without assistance. Subjects were interviewed with structured questionnaire in order to ask experience of previous falls, hours in per day, symptoms related orthostatic hypotension and demographic characteristics. Orthostatic hypotension was assessed at 1 minute after the subjects standing from sitting position and defined as 20mmHg or greater decrease in systolic blood pressure after standing. Result: The prevalence of orthostatic hypotension was 17.1%. The mean drop of systolic blood pressure was 27.46mmHg among orthostatic hypotension subjects. The significant variables which explain the occurrence of orthostatic hypotension was the basal systolic blood pressure, the hit ratio of discriminant function with basal systolic blood pressure was 69.7%. Conclusion: Finding indicate that this study will contribute to develop nursing strategies to identify risk factors and to prevent orthostatic hypotension for the aged.

• 대한치과의사협회지
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• 제13권12호
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• pp.1131-1133
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• 1975

Healthy adults in the ranges of from 22 to 25 years old, 208 males and 140 females respectively, who have no specific organic diseases in the heart and lung, were experimentally studied on the effect of blood pressure, pulse and breath rates, and blood circulation by the postural changes of the supine, semi-supine, upright, sitting and trendelenburg position. The results obtained were as follows : 1) The blood pressure showed makred differences in the postural changes of the upright>sitting>semisupine>trendelenburg>supine position, orderly. 2) The breath rate did not show specific findings in the postural changes. 3) If the dental chair were suddenly tilted forwardly and backwardly, patients would be subjected to fall in the dangerous state, fainting.