• Physical Therapy Korea
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• v.25 no.4
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• pp.9-18
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• 2018

Background: Leg length discrepancy (LLD) leads to many musculoskeletal disorders and affects daily activities such as walking. In the majority of the population, mild LLD is a common condition. Nevertheless, it is still controversy among researchers and clinicians on the effects of mild LLD during gait, and available studies have largely overlooked this issue. Objects: The purpose of the present study is to investigate the effects of mild LLD on the gait parameters and trunk acceleration. Methods: A total of 15 female and male participants with no evidence of LLD of >.5 ㎝ participated in the present study. All participants walked under the following two conditions: (1) The non-LLD condition, where the participants walked in shoes of the same heel height; (2) A mild LLD condition induced by wearing a 1.5 ㎝ higher heel on the right shoe. The GAITRite system and tri-axial accelerometer were used to measure gait parameters and trunk acceleration. To compare the variation of each variable, a paired t-test was performed. Results: Compared to the non-LLD condition, step time and swing phase were significantly increased in the mild LLD condition, while stance phase, single support phase, and double support phase significantly decreased in the short limb (p<.05). In the long limb of the mild LLD condition, single support phase significantly increased, while swing phase significantly decreased (p<.05). Furthermore, significant decrease in the gait velocity and cadence in the mild LLD condition were observed (p<.05). In the comparison between both limbs in the mild LLD condition, the step time and swing phase of the short limb significantly increased compared with the long limb, while step length, stance phase, and single support phase of the long limb significantly increased compared with the short limb (p<.05). Additionally, trunk acceleration of all directions (anterior-posterior, medial-lateral, vertical) significantly increased in the mild LLD condition (p<.05). Conclusion: The results of the present study demonstrate that mild LLD causes altered and asymmetrical gait patterns and affects the trunk, resulting in inefficient gait. Therefore, mild LLD should not be overlooked and requires adequate treatment.

• 한국노년학
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• v.37 no.3
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• pp.527-547
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• 2017

The purpose of this study is to investigate how depression, death anxiety, and social support can exert influence on the psychological well-being of elderly living alone through a parameter of resilience. A survey was conducted involving 988 elderly over the age of 65 living alone in the Daejeon metropolitan area and Chungcheongnam-do and the data were analyzed using structure equation model. The results were as follows. First, in the measurement of variables according to demographic characteristics, depression showed significant differences depending on gender, level of education, health, and financial condition, while death anxiety differed depending on gender, and level of education. Social support was significantly different by gender, age, level of education, region, health, and financial condition. The level of resilience was significantly different by gender, age, level of education, health, and financial condition. Psychological well-being varied according to gender, level of education, health, and financial condition. Second, the effects of depression, death anxiety and social support on psychological well-being were examined. It was found that depression had a negative influence and social support had a positive impact while death anxiety showed no influence. Third, with regard to the effects of depression, death anxiety, social support on resilience, depression was found having negative influence, whereas social support having positive influence. Forth, psychological well-being was positively affected by resilience. Also, through the mediated pathway of resilience, their psychological well-being seemed to totally improve when the negative factors were reduced and the positive ones promoted. This study may have some significance in reference to examine the factors affecting the psychological well-being of elderly living alone and to develop social welfare service programs and policies in the field.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.11
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• pp.2266-2268
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• 2009

In this paper, a simple method of angle velocity estimation is presented for a passive dynamic biped robot. The estimation problem is not an easy task because its dynamic model is a hybrid system involved with an impact condition. Instead of designing a complex observer for hybrid systems we simply utilize the impact condition to reset the initial condition of the high-pass filter when the non-support leg hits the slope. The approach has been verified by simulation results.

• The Journal of Korean Academic Society of Nursing Education
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• v.9 no.2
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• pp.253-263
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• 2003

Rheumatoid arthritis patients not only suffer from the physical damage, but they are afflicted severely mental and psychologic after effects. Their depression and low self-esteem eventually yields serious mental damages, which makes difficult for them to recover. The states of mental health of arthritis patients are diversified depending on the characters and surrounding circumstances, although they may have suffered from the similar condition. Therefore this research was conbucted to the factors that can give positive influences to the patients. In recent time, social support for the arthritis patients has become an important factor that can positively influence their mental health. In other words, social support can act as an important environmental system for arthritis patients to recover their damaged mental health. In order to fulfill this purpose, 118 patients were examined to identify the relationship between the variables. The summary of the result obtained from the research is as follow: 1. The structural aspect of social support for arthritis patients showed the most of them had various social support network size and their highest support system were 'family', 'relative' and 'friends'. The functional aspect of social support for arthritis patients showed moderate degree and their highest sub component was 'approval'. 2. High correlation was found between duration of relationship, similarity, frequency of meeting and functional support. There was no relationship between depression, self-esteem and social support. 3. Therefore this research has suggested that nurses who care rheumatoid arthritis patient consider the above condition to develop self-help group.

• Journal of the Korean GEO-environmental Society
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• v.9 no.7
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• pp.25-35
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• 2008

In domestic cases, the standard support pattern of 2-lanes road tunnels is presented because construction experience and high degree various data was abundant. But, it is not desirable to apply standard for 2-Arch tunnels that the precedent and measuring data is insufficient existing support pattern blasting plan and interpretation of separate way concerning specific terrain and rock quality. In this study, behavior according to load distribution ratio and Unsymmetrical Pressure about standard support pattern which is applied in design and construction of 2-arch tunnels was analysed and the examination of blasting vibration has influence on the center wall is conducted as a consequence reasonableness of support whether or not with presumed support pressure and ground reaction curve method. In result appropriateness of standard support pattern, support quantity is proper but considers specific terrain and rock quality condition when design and construction of further step 2-arch tunnel standard support pattern must be decided by considering terrains, soil properties and construction condition of the objective tunnel.

• The Journal of the Korea Contents Association
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• v.14 no.1
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• pp.189-199
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• 2014

This study analyze 42ordinance of a local government for the improvement labor conditions and position of social worker. That way suggest developmental direction of ordinance enactment. The results are as follows. First, there are purpose, subject of application, duty of local government president, condition study, establishment of support plan, improvement labor conditions. But, there are not committee for labor conditions improvement, prize in many ordinance. Second, standard of wage is not, it has to suggesting by the wage standard of social welfare official in local government or Ministry of Health and Welfare. Third, condition study's period and support organization for social worker's labor condition improvement are not clear. Therefore, we must suggest the condition study's period of social worker, and make the support organization for condition improvement.

• Journal of the Korean Society for Railway
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• v.14 no.3
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• pp.262-270
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• 2011

Track support stiffness which affected track maintenance and riding comfort had a big effect on the track and train. Also, track support stiffness of the track design which was based on theory differs from track support stiffness of the track generated on the field. Track support stiffness was generated by several factors such as dynamic wheel loads, vertical displacement of track, and stress at rail bottom on the field test. With the results of the field test was compared with theoretical value. This paper analyzed that track support stiffness of ballast depended on condition of ballast, and support stiffness of concrete track also depended on the characteristic of track structures such as, normal elastic fastening system, rail floating system and sleeper floating system. However, on the ballast and concrete track, the designed track support stiffness was underestimated less than the measured track support stiffness. When the track condition was estimated on service line, it would not consider the track condition on the field. Therefore, this study proposed the various track type and the range of track support stiffness based on the experimental test.

• Physical Therapy Rehabilitation Science
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• v.6 no.3
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• pp.140-145
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• 2017

Objective: The purpose of this study was to investigate the effect of visual block with ankle joint fatigue on gait and dynamic balance ability. Design: Cross-sectional study. Methods: Thirty healthy young adults (men=15, women=15) between 22 to 25 years of age voluntarily participated in this study. All subjects performed the gait and dynamic balance test successively in two conditions: the visual block and the open eyes condition. Before the gait and dynamic balance test, muscle fatigue on the ankle joint was induced to all subjects by doing ankle dorsiflexion and plantarflexion alternately, and then gait parameters (step length, stride length, cadence, velocity, single limb support, and double limb support) were assessed by walking on the GAITRite system (CIR Systems Inc., USA). Subjects also performed the functional reach test (FRT) for assessment of dynamic balance. This study examined gait parameters and FRT scores in each visual block and open eyes condition. Results: The results showed that FRT scores with the visual block condition significantly decreased compared to without visual blocking (p<0.01). Step length, stride length, cadence, and velocity of gait parameters decreased significantly in the visual block condition (p<0.01) while there was no significant difference for single limb support. However, double limb support increased significantly in the visual block system (p<0.01). Conclusions: Therefore, blocking of visual information with muscle fatigue of the ankle joint can affect gait and balance ability of young adults and increase the risk of falls.

• Journal of the Korean Geotechnical Society
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• v.31 no.12
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• pp.59-69
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• 2015

This study examined the magnitude and distribution of earth pressure on the support system in a jointed rock mass due to the different joint sets as well as varying the rock type and joint condition (joint shear strength and joint inclination angle). Based on a physical model test and its numerical simulation, a series of numerical parametric analyses were conducted using a discrete element method. The results showed that the induced earth pressure was affected significantly by a joint set depending on the inclusion of the joint inclination angle, which induces a joint sliding condition, but the number of joint sets alone was not important, even though the earth pressure could be increased slightly as the number of joint sets is increased. In addition, the study results were compared with Peck's earth pressure for soil ground, which indicated that the earth pressure in a jointed rock mass could be considerably different from that in soil ground. The study suggests that the effects of joint sets as well as rock type and joint condition are important factors affecting the earth pressure in a jointed rock mass and they should be considered when designing a support system in a jointed rock mass.

• Journal of Korean Academy of Nursing
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• v.29 no.1
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• pp.84-96
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• 1999

This study was conducted to identity the degree of burden and social support perceived by mothers of nephrotic syndrome patients. Also, relations between burden and social support were investigated to provide basis data for their family health and nursing intervention. The study subjects were mothers of nephrotic syndrome patients whose children were hospitalized in 2 Pediatric wards of University Hospital in Seoul and 1 in Pusan from Jun. 1, 1998 to Jun. 30, 1998. Burden measurement Instrument for this study was designed by the researcher and its basis in one developed by Montgomery et al.(1985) and the reliability was .78. Also. P.R.Q. Part I, II by Brandt and Weinert(1981) was used as social support measurement instrument and the reliability .71. The data analysis was done by SPSS, t-test, ANOVA Pearson correlation. The result were as follows. 1. Burden felt by mothers shows an average value of 60.82 (Maximum 86, Standard deviation 1.244). 2. Of the mother characteristics, the score of burden was high in case of no religion and low income. Of the patient characteristics, the score burden ranked as high MCNS, doing oral therapy, injection therapy at the same time and negative perceived patients condition. 3. The mean score of support was 77.54(Maximum 96, Standard deviation 1.096). 4. The main supporters were husband (the highest), brother, sister, health speciality and the subject expressed the highest satisfaction toward supporters in chronic disease. 5. Of the patient characteristics, the higher age group and the elder group showed high support. Also, positive perceived patient's condition, high support. 6. The relationship between burden and social support is not significant. In conclusion to the above study, the researcher suggests. 1. The Qualitative research to investigate influential factors on burden of family of nephrotic syndrome patients is needed.