• 대한물리의학회지
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• 제13권4호
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• pp.51-58
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• 2018

PURPOSE: This study was conducted to determine if the Harrison hip score (HHS), a tool for assessing hip joint function, and the Burg balance scale (BBS), a general balance assessment tool, actually reflect the balance ability of total hip arthroplasty (THA) patients 3 months after surgery. In addition, this study investigated the initial weight distribution strategy for bilateral lower extremity after THA surgery to understand the balance of THA patients. METHODS: Fourteen 3-month THA patients performed static dual standing and sit-to-stand (STS) tasks. Ground reaction forces on each leg were collected to calculate the weight distribution symmetricity (SWD), and the HHS, functional HHS (f-HHS), and BBS were evaluated. Correlation analyses between SWD and the HHS (also f-HHS) and BBS were then applied to the THA patients. RESULTS: The correlations between functional evaluation tools (HHS, f-HHS, BBS) and SWD were weak strength for the static balance task, but moderate for the dynamic STS task. Among the evaluation tools used in the present study, f-HHS was most useful for evaluation of dynamic balance ability. CONCLUSION: The results suggest that use of HHS, f-HHS, and BBS as functional evaluation tools does not provide meaningful information regarding balance ability, but that they are useful for evaluating dynamic balance ability of THA patients. The dynamic balance ability at 3 months after THA seems to be under development.

• The Journal of Korean Physical Therapy
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• 제27권6호
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• pp.413-418
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• 2015

Purpose: This study was performed to examine the effect of action observation training on sit to-walk times in chronic stroke patients. Methods: Twelve stroke patients were randomly allocated to two groups, as follows: an action observation training (AOT) group and a scenery picture observation (SPO) group. The AOT group was engaged in video observation for 2 minutes 30 seconds with 12 ADL functional activities related to the sit-to-walk task: physical training was carried out in two repetitions lasting 2 minutes 30 seconds. The landscape imagery control group observed landscape picture for 2 minutes 30 seconds and then carried out the same physical training. The intervention involved a total of 12 sessions over 4 weeks, and each session lasted 30 minutes. The pre and post-tests measured the timed up and go test (TUG), Sit to stand test (STS), and Dynamic gait index (DGI). The Wilcoxon signed ranks test was used to compare pre-test and post-test result, and the Mann-Whitney U test was employed for comparison between groups. Results: The TUG time was significantly different between the AOT group and the SPO group. According to the findings, the experimental group's TUG was significantly decreased (p<0.05). In comparison of the two groups, there was no significant in STS or DGI between the AOT group and SPO group. Conclusion: This study showed that the intervention can be used to decrease TUG time. Our research suggests that action observation training has a positive effect on sit-to-walk times in patients with chronic stroke.

• The Journal of Korean Physical Therapy
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• 제26권6호
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• pp.449-452
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• 2014

Purpose: The purpose of this study was to analyze the coordination between trunk flexion and lower limb extension contributing to vertical propulsion during sit-to-stand (STS) at different chair heights in the elderly. Methods: Ten elderly subjects were asked to stand up at their natural speed from different chair heights : (1) $90^{\circ}$ knee flexion; (2) $100^{\circ}$ knee flexion; (3) $110^{\circ}$ knee flexion; and (4) $120^{\circ}$ knee flexion. A standard chair without a backrest or armrests was used in this study. To remove inertial effects of upper limb movements, subjects were asked to stand up from a chair with their arms crossed at the chest. Mean of results of three trials were used in the analysis at different knee flexion angles. Distances moved by the shoulder for compensatory trunk movement was recorded by motion analysis and vertical force was recorded under foot using force plates. Distances moved by the shoulder and vertical ground reaction force measurements were analyzed using repeated ANOVA. Results: Distances moved by the shoulder significantly decreased with higher chair (p<0.05). Vertical forces were not significant difference on chair heights (p>0.05), but results of pairwise comparisons for vertical force revealed significant difference between $90^{\circ}$ knee flexion and $120^{\circ}$ knee flexion (p<0.05). Conclusion: Trunk movement is probably used as a compensatory mechanism at low chair heights to increase lift-off from sitting by the elderly.

• 한국운동역학회지
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• 제32권3호
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• pp.87-93
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• 2022

Objective: The purpose of this research was to investigate the age-related changes in whole-body motor variability during sit-to-stand (STS) task. It has been reported that children perform motor tasks less accurately with greater variability as compared to adults. However, it is still unknown how they utilize the abundant degrees of freedom and accomplish voluntary actions. Uncontrolled manifold (UCM) analysis has been used to partition motor variabilities into two independent variability components, task-relevant variability (V_ORT) and task-irrelevant variability (V_UCM). We investigated what differences exist between children and adults with respect to these two motor variability components in relation to motor development stages. Method: Ten 6-year-old children (height: 116.2 ± 4.3 cm, weight: 23.1 ± 3.9 kg, motor development assessment percentile score: 77.5 ± 18.6%), ten 10-year-old children (height: 138.7 ± 7.2 cm, weight: 35.8 ± 10.3 kg, motor development assessment percentile score: 73.9 ± 12.7%), and ten young adults (age: 23 ± 1.6 year-old, height: 164.3 ± 11.4 cm, weight: 60.8 ± 12.0 kg) participated in this study. Each participant performed STS ten times, and a motion capture system was used to capture the whole-body kinematics. Each segment centers of mass and the whole-body center of mass were calculated, and UCM analysis was used to quantify motor variabilities, V_ORT and V_UCM. One-way ANOVA was used for statistical analysis. Results: We found that children produced more motor variabilities in V_ORT and V_UCM in all three dimensions, anterior-posterior, medial-lateral, and vertical. As age increased, both, V_ORT and V_UCM significantly decreased (p<.05). Conclusion: The greater V_ORT found in children compared to adults indicates that the repeatability over repetitions improves through development, while the greater V_UCM found in children suggests that children better utilize the abundant degrees of freedom during STS compared to adults.

• 대한정형도수물리치료학회지
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• 제21권2호
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• pp.7-14
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• 2015

Purpose: The purpose of this study was to investigate the effects of falls prevention exercise program to balance, falls efficacy, blood pressure and blood lipids in the elderly females. Methods: A total of twenty-six elderly women participated in this study. All subjects participated in exercise program based on pelvic stabilization and balance training on two times a week for twelve weeks. They were measured about Berg balance scale (BBS), Time up and go (TUG), Functional reach test (FRT), Sit to stand (STS) for balance, falls efficacy scale-international (FES-I) for falls efficacy, systolic blood pressure (SBp), diastolic pressure (DSp) for blood pressure, and total cholesterol (TC), triglyseride (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C) for blood lipids. Results: There were significant improvements of BBS (p<.05), TUG (p<.001) FRT (p<.01), and STS (p<.001) in the balance after exercise program. There was significant improvements in FES-I (p<.001) in the falls efficacy, There were no statistical differences of SBp and DSp in the blood pressure. There were no statistical differences of TC, TG, HDL-C, and LDL-C in the blood lipids. Conclusions: Falls prevention exercise program was meaningful increasing balance ability and falls efficacy.

• 대한기계학회논문집B
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• 제35권11호
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• pp.1243-1248
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• 2011

본 연구에서는 한국인 표준체형과 유사한 사람의 의료 영상 자료를 이용하여 인체 골격계 모델을 만들었다. 이를 동역학 해석 상용 소프웨트어인 $RecurDyn^{TM}$에 탑재시켜 인체 시뮬레이션 모듈을 개발하였고, 노인의 보행 동작해석을 통해 모델을 검증하여 보행기(elderly walker) 사용 유무에 따른 앉기-서기 및 보행을 분석하였다. 노인이 보행기를 사용하였을 때 앉기-서기 동작 시 하지관절 기구학의 변화는 미비하였고, 보행 시 각 관절의 가동범위가 조금 줄었고 동작시간이 상당히 길어졌다. 또한 근전도 해석결과 일부 발목 주변 근육들과 햄스트링 근육에서 근활성치가 줄거나 활성시간이 줄었다. 이러한 변화는 보행기를 통해 보행할 때 하지의 기여도가 감소했기 때문이라고 생각되었다. 본 연구를 통해 얻어진 시뮬레이션 기술은 여러 가지의 생체역학 연구에 널리 활용될 것으로 생각된다.

• 대한물리치료과학회지
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• 제30권1호
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• pp.1-9
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• 2023

Background: The advantages of robotic therapy have recently been attempted several times in the rehabilitation of total hip arthroplasty (THA) patients. Therefore, this study also aims to report a case of how robot therapy affects the function of THA patients due to developmental dysplasia of the hip (DDH). Design: Case Study. Method: This study used the A-B-A' design. Period A is before robotic therapy, period B is robotic therapy, and period A' is after robotic therapy. The subjects performed physical therapy and occupational therapy for five days each during the baseline period A and A'. In intervention period B, robotic therapy was performed for five days along with the baseline intervention. This study was conducted for a total of fifteen days. The subjects' sit to stand (STS), timed up and go (TUG), and 10 metre walk (10MW) were evaluated. Result:: STS and TUG were significantly improved in periods B and A' compared to period A (p<0.05), and STS was significantly improved in period A' compared to period B (p<0.05). 10MW showed no significant improvement in periods B and A' compared to period A. Conclusions: This study confirmed that robot therapy was an effective intervention in improving the function of women in their 30s who underwent THA due to DDH. In the future, a study comparing the control group should be performed.

• 대한지역사회작업치료학회지
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• 제3권2호
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• pp.33-46
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• 2013

목적 : 가상현실 프로그램과 현실화된 과제 지향 프로그램이 노인의 균형에 어떠한 영향을 미치는지 그 효과를 비교해 보고자 한다. 연구방법 : 12명의 건강한 노인을 대상으로 가상현실 프로그램과 현실화된 과제 지향 프로그램을 각각 6주간 주 2회씩 실시하였다. 균형 능력 변화를 위해 버그 균형 척도(Berg Balance Scale: BBS), 이동 능력검사(Timed Up and Go: TUG), 한 발 서기 검사(One-Legged Stance Test: OLST), 5회 반복 앉았다 일어서기 검사(5-Repetition Sit-To-Stand Test: 5R-STS Test)를 사용하였다. 결과 : 분석결과 프로그램 전 후에서는 통계적으로 유의한 결과를 얻지 못하였다. 하지만 세 집단 간 비교에서는 버그 균형 척도, 한 발 서기 검사 중 눈 뜨고 좌, 우에서 통계적으로 유의한 결과를 얻었으며 사후 검정결과 눈 뜨고 검사 - 좌에서 가상현실 프로그램과 현실화된 과제 지향 프로그램 간에 유의한 결과를 얻었다. 결론 : 현실화된 과제 지향 프로그램은 노인의 균형 능력 향상에 좀 더 긍정적이었으며 임상 및 지역사회에서 좀 더 쉽게 수행할 수 있는 프로그램으로 유용하게 사용될 수 있을 것이라 생각된다.

• 대한물리의학회지
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• 제11권1호
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• pp.23-34
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• 2016

PURPOSE: This study aimed to assess the relationship between the severity of radiographic features and pain and function in patients with knee osteoarthritis (KOA). METHODS: Seventy-eight subjects (14 men, 64 women) with KOA, between the ages of 41 and 83 years (mean age, 61.29 years), were included. All the subjects diagnosed with KOA were scored for severity of radiographic KOA according to the Kellgren-Lawrence (K/L) grade, visual analogue scale (VAS), knee joint range of motion (ROM), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), maximum muscle power (MMP), and sit-to-stand (STS) and one-leg standing (OLS) tests. Associations among the K/L grade, diagnosis, pain, and function were examined by correlation analysis. RESULTS: There were no significant differences between the K/L grade, and the VAS, STS test time, and WOMAC scores (p>.05). There were no significant differences between the K/L grade, bilateral ROM, MMP, and left OLS test time (p>.05). However, there was a significant difference between the K/L grade and right OLS test time (p<.05). The K/L grade was negatively correlated with the left OLS test time(r=-.24, p<.05) and with the right OLS test time (r=-.307, p<.01). CONCLUSION: These results suggest that radiographic KOA was not associated with pain, knee MMP, ROM, and STS test time, but had a weak negative correlation with OLS test time.

• The Journal of Korean Physical Therapy
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• 제25권2호
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• pp.96-102
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• 2013

Purpose: The purpose of the study was to investigate the effect of a training program using virtual reality on the balance and lower muscular strength of Parkinson's disease patients. Methods: The study included 22 patients with Parkinson's disease who were arbitrarily classified into 2 groups: 11 patients in the experimental group and 11 patients in the control group. Balance was measured with the Berg balance scale (BBS), the functional reach test (FRT), one-leg stance test (OLST), and the timed up and go test (TUG); whereas, lower muscular strength was measured with the sit-to-stand test (STS). Ping-Pong, bowling, and tennis were selected for virtual reality training for the experimental group, and were performed for 30 minutes 3 times a week for 8 weeks. The control group did not undergo any of the virtual reality training programs. Results: A significant difference was observed in the BBS, FRT, OLST, TUG, and STS results within the experimental group that underwent the virtual reality training program. On the other hand, no significant difference was observed in the BBS, FRT, OLST, TUG, and STS values within the control groups. Conclusion: In conclusion, the virtual reality training program positively affects the balance and lower muscular strength in Parkinson's disease patients. This result indicates the possibility of application of the virtual reality training program to the management for Parkinson's disease patients, and highlights the need for the development and application of more efficient virtual reality training programs in the future.