• 산업공학
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• 제10권3호
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• pp.197-208
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• 1997

In workplace design, an ergonomic solution should ensure low postural stress in the operator during his/her work. Stress caused by awkward working postures of the trunk, shoulders and legs can result in fatigue, discomfort, musculo-skeletal disorders and nerve entrapment syndromes. Since discomfort and musculo-skeletal disorders are both related to exposure to biomechanical load on the musculo-skeletal system, minimization of discomfort will contribute to reduction of the risk for musculo-skeletal disorders as well. Therefore, in this study, perceived discomfort on the human body joints was measured in the standing postures using the magnitude estimation in order to have a standardized numerical scale for joint discomfort. Nine healthy graduate students participated voluntarily in the laboratory study. The results revealed that perceived discomfort of all the joints increased as the joints deviated from neutral position. Especially, it showed drastic increment on perceived discomfort when deviation from neutral position in each human body joint increased from 75% to 100%. in terms of relative range of motion(R0M). On the basis of these experimental results, a preliminary ranking for assessment of stressfulness of non-neutral postures around the human body joints was suggested.

• 대한인간공학회지
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• 제24권3호
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• pp.43-52
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• 2005

A two-dimensional posture measurement system was developed to evaluate the risks of work-related musculoskeletal disorders(MSDs) easily on various conditions of work. The posture measurement system is an essential tool to analyze the workload for preventing work-related musculoskeletal disorders. Although several posture measurement systems have been developed for workload assessment, some restrictions in industry still exist because of its difficulty on measuring work postures. In this study, an image recognition algorithm was developed based on a neural network method to measure work posture. Each joint angle of human body was automatically measured from the recognized images through the algorithm, and the measurement system makes it possible to evaluate the risks of work-related musculoskeletal disorders easily on various working conditions. The validation test on upper body postures was carried out to examine the accuracy of the measured joint angle data from the system, and the results showed good measuring performance for each joint angle. The differences between the joint angles measured directly and the angles measured by posture measurement software were not statistically significant. It is expected that the result help to properly estimate physical workload and can be used as a postural analysis system to evaluate the risk of work-related musculoskeletal disorders in industry.

• 대한한의학회지
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• 제33권1호
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• pp.148-159
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• 2012

Objectives: This study investigated the correlation among Postural Assessment Scale for Stroke (PASS), Timed "Up and Go" Test (TUG) and gait (velocity, cadence, step-length, stride-length and single-limb support). Methods: The 70 subjects were assessed on trunk control measured with the use of the PASS, dynamic balance (TUG) and gait function (by GAITRite). The data were analyzed using Pearson product correlation. Results: The PASS total scores were significantly correlated with PASS-M, PASS-C, and PASS-T (r =.80 ~ .88 p<.01). All items of the PASS were significantly correlated with TUG (r = -.63 ~ -.81 p<.01), velocity (r = .44~.58 p<.01), cadence (r =.38 ~.51. p<.01), affected side step length (r = .44 ~.56 p<.01) and affected side stride length (r = .45 ~.59 p<.01). But affected side single-limb support was lowly correlated with PASS-M, PASS-C, PASS-T and PASS-total (r = .25~.36 p<.05). Conclusions: Measures of trunk control were significantly related with values of dynamic balance and gait. Based on these results, trunk control is an essential core component of balance and gait. Trunk control training programs after stroke should be developed and emphasized.

• 한국전문물리치료학회지
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• 제23권4호
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• pp.47-54
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• 2016

Background: Losing balance during locomotive actions becomes an increasing threat to both the community-dwelling elderly and elderly with Parkinson disease (PD). Those with PD may be at a high risk of fall due to particular characteristics during the turn. Turning around during locomotive actions may be one of problematic factors causing losing balance. Objects: This study is part of a larger study, which in part aims to identify turning strategies, to compare the strategies in the elderly with and without idiopathic PD aged 51 years and older and to distinguish whether the turning strategies can predict the elderly at risk of falls. Methods: A total of 22 community-dwelling elderlies (10 elderlies with idiopathic PD and 12 healthy elderlies) were investigated for the turning strategies during the timed up and go test. Results: There were some significant differences between the two groups during turning (p<.05). The idiopathic PD group had a tendency of challenging on taking more number of steps, more time to accomplish and staggering more for the turn relative to the control group. Conclusion: Taking more number of steps and more time to turn may be useful for distinguishing the characteristics of PD from that of the healthy elderly in turning strategy.

• 대한인간공학회지
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• 제23권4호
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• pp.45-56
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• 2004

The purpose of this study is to evaluate perceived discomfort of working postures in terms of upper body (back, shoulder, and elbow) flexions when an external load varies. Eighteen subjects participated in an experiment of appraising perceived discomfort of varying upper body postures with three levels of external loads given. The ANOVA results showed that the perceived discomfort of upper body postures was significantly affected by the external load. It was also apparent that the interactions between external load and upper body posture were significant (p< 0.001). The result implies that a new posture classification scheme for workload assessment methods may be in need to reflect such interactions between external load and upper body posture. In order to support the statement, a regression model of perceived discomfort of upper body postures obtained from the experiment was developed and compared to that of perceived discomfort of seven work-related postures found in automobile assembly operations. The correlation coefficient between predicted and actual values of perceived discomfort was about 0.96. It is expected that the result help to properly estimate the body stress resluting from worker's postures and external loads and can be used as a valuable design guideline on preventing work-related musculoskeletal diseases in industry.

• The Journal of Korean Physical Therapy
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• 제15권4호
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• pp.34-45
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• 2003

A 'pusher syndrome' encompassing postural imbalance and hemi-neglect is believed to aggravate the prognosis of stroke patients. The patients with pusher syndrome show a particular posture that pushing away from the unaffected side of the body. The objective of this study was to investigate associated proprioception, associated neuro-psychological symptoms and characteristics of functional outcome with and without pusher syndrome. The subjects of this study were 58 acute stroke patients who been rehabilitated at two university hospitals in Seoul and Buchun. Data were collected using proprioception test and line bisection test. The ability of ADL was assessed by the Modified Barthel Index, transfer by the Functional Independence Measure, and balance by the Modified Motor Assessment Scale. The results were that significant difference was found in the presence of proprioception, in the incidence of hemineglect and anosognosia, and in the score of ADL, transfer and balance between patients with and without pusher syndrome. Patients without pusher syndrome gained more motor score than patients with pusher syndrome. From improvement of view, patients with pusher syndrome gained the lowest score in ability of transfer. The finding suggest that the patients with pusher syndrome is a poorer functional outcome, be related to proprioception, hemineglect and anosognosia.

• The Journal of Korean Physical Therapy
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• 제32권6호
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• pp.372-377
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• 2020

Purpose: The purpose of this study was to verify the effect of applying clam exercise on improving trunk control and balance ability in stroke patients. Based on this, we tried to provide clinical information. Methods: In this study, 18 patients with chronic stroke were recruited from a rehabilitation hospital. The patients were divided into two groups: a clam exercise group (9 patients) and a control group (9 patients). After 30 minutes of neuro-development therapy, they performed clam exercise or bridge exercise for 3 weeks, 5 times a week for 30 minutes. A trunk impairment scale (TIS) and a postural assessment scale for stroke patients-trunk control (PASS-TC) were performed to evaluate the subjects' ability to control trunk before and after intervention. Balance ability was measured by Balancia before and after intervention. Results: After the training periods, area 95% COP and weight distribution of the affected side were significantly different from the clam exercise group compared to the control group (p<0.05). Conclusion: Based on the results of this study, in can be seen that the clam exercise is effective in improving the balance ability compared to the bridge exercise. Maintaining the standing posture requires muscle strength of the hip abduction and extension, which is the result of the clam exercise selectively strengthening these muscles. Therefore, if you want to provide intervention to improve the balance of stroke patients, it is recommended to perform a clam exercise.

• 한국전문물리치료학회지
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• 제30권4호
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• pp.253-260
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• 2023

Cerebral palsy (CP) is a prevalent neurodevelopmental disorder characterized by motor and postural impairments caused by central nervous system dysfunction. It significantly impacts children's daily functioning and quality of life. Physical therapy is a crucial intervention for children with CP that aims to improve motor skills and functional abilities. This study aimed to provide a comprehensive overview of holistic physical therapy approaches methods specifically designed for children with CP and examine recent research trends and their implications for optimizing outcomes in this population. This study employed a narrative review approach, conducting a comprehensive examination of the current literature pertaining to physical therapy methods for children with CP. The review encompassed studies exploring assessment techniques, evidence-based interventions, and innovative approaches in the field. It was discerned that encompassing physical therapy strategies, which encompass individualized treatment plans, evidence-based interventions, and the integration of innovative techniques, yield a favorable influence on the motor skills and functional capacities of children with CP. This review synthesizes the current knowledge on effective physical therapeutic strategies for children with CP. Furthermore, this review highlights the need for continued research and innovation in the field of pediatric physical therapy for CP.

• 한방재활의학과학회지
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• 제20권1호
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• pp.1-12
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• 2010

Objectives : Cool Pharmacopuncture for static blood is a famous pharmacopuncture treatment that treated disease caused by static blood. Hyolhae(Sp10) is also a famous point of acupuncture that treated that. This study was designed to evaluate the effects of Cool Pharmacopuncture for static blood into Hyolhae(Sp10) on BAX and BCL-2 expression in the experimental traumatic brain injury(TBI) rats. Methods : Male rats were divided into 3 groups. I was no treatment after TBI. II was treatment with needle-prick acupuncture after TBI. III was treatment with Cool Pharmacopuncture for static blood into Hyolhae(Sp10) after TBI. The author carried out neurological motor behavioral test, histological assessment test. Neurological motor behavior tests consist of rotarod test, beam-walking test and postural reflex test. In the histological assessment test, BAX and BCL-2 expression, hematoxylin & eosin staining were experimented. Results : In neurological motor behavior tests, motor and cognitive function recovery was significantly increased in the II, III as compared with I (p<0.05). Especially III was significantly increased as compared with II (p<0.05). BAX expression was significantly decresed in order of the III, II, I after 7 and 14 days later. BCL-2 expression was investigated in the III, II as compared with I. Especially Most incresed expression was experimented in the III. Conclusions : According to the above results, Cool Pharmacopuncture for static blood can inhibit apoptosis of cells after TBI in rats by contol of BAX and BCL expression.

• PNF and Movement
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• 제9권2호
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• pp.45-53
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• 2011

Purpose : Many researchers have attempted to identity the reliability used in clinical examination of balance and gait performance for individuals of hemiparetic stroke. The study aims to evaluate whether the reliabilities of three popular clinical measures of balance and gait performance was consistency regardless of applicate experience of those clinical measures compared with previous studies for persons with hemiparetic stroke. Methods : A total of three hemiparetic stroke populations and twenty-six physical therapists were recruited from Glory hospital, Inchen, Korea in this study. The three clinical measures, involving Berg balance test (BBT), dynamic gait index (DGI), and Tinetti performance-oriented mobility assessment (POMA), were assessed in two sessions that were seven days apart. Results : The POMA was showed a good intrarater and interrater reliabilities in people with hemiparetic stroke regardless of measure's experience in clinical field. However BBT and DGI were showed below moderate intrarater and interrater reliabilities. Conclusion : The POMA could be a reliable measure to evaluate functional postural stability and gait performance in hemiparetic stroke patients compared with other two clinical measures regardless of measure's experience of physical therapists.