• Journal of Magnetics
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• v.16 no.3
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• pp.276-280
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• 2011

This paper presents a non-destructive evaluation study on a radiator with cooling fins as a complex shaped specimen. Radiator structures are used in various heat exchangers, such as automobiles, air conditioners and refrigerators. An eddy current testing method, namely multi-frequency excitation and spectrogram method (MFES), was employed to detect a defect on the radiator tube surrounded by cooling fins. Overall, experimental results suggested that the influence of cooling fin is not as noticeable as that of the defect signals.

• Physical Therapy Rehabilitation Science
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• v.11 no.4
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• pp.391-399
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• 2022

Objective: This study aimed to investigate the effects of fall-prevention exercise programs on fall efficacy, depression and health-related quality of life in elderly. Design: a randomized controlled trial Methods: A total of 57 participants over 65-years-old have been allocated to control and experimental groups. The experimental group received 8 weeks of fall-prevention exercises that included strengthening of lower extremities, balance and gait training. They received the exercises twice a week for 50 minutes as a group.Both groups were assessed using Modified Falls Efficacy Scale (MFES), Geriatric Depression Scale (GDS), and 36-Item Short-Form Health Survey (SF-36) prior and post to the intervention. The control group also received the same exercise program after the post evaluation. Results: The experimental group showed overall improvement in MFES, GDS, and physical components of SF-36 (p<0.05). The MFES was significantly increased in the experimental group after the intervention (p<0.05). The GDS was significantly decreased in the experimental group after the intervention (p<0.05). The SF-36, only physical Function, Role limitations due to physical health, general health, and energy and fatigue categories were improved in the experimental group after the intervention (p<0.05). Conclusions: The results showed 8 weeks of fall-prevention exercise programs can increase fall efficacy and physical related quality of life while reducing depression of elderly over 65.

• The Journal of Korean Physical Therapy
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• v.21 no.4
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• pp.37-42
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• 2009

Purpose: The purpose of this study was to determine the effect of physical performance on bone mineral density (BMD) in elderly women. Methods: Twenty-one elderly women participated in this study. After testing functional ambulation category (FAC), they were classified into two groups: dependent walking group, those who could not walk independently (FAC 0~2, n=11) and independent walking group those who could walk independently (FAC 3~5, n=10). Outcome measures were: general characteristics, physical performance and BMD. General characteristics included age, body mass index (BMI) and waist-hip ratio. Physical performance included the chair rise test (CRT) and the modified fall efficacy scale (MFES). BMD was represented in the osteoporosis index (OI), T-score and Z-score. BMD was evaluated in calcaneal bone, using OsteoPro. The data was analyzed using SPSS 12.0 software and the Mann-Whitney U test and the Spearman correlation. Results: Age, BMI and waist hip ratio, which all affect BMD, showed no significant differences between groups (p>0.05). But the FAC 3~5 group showed a significantly higher score for CRT, MFES and T-score, compared with the FAC 0~2 group (p<0.05). The T-score was correlated with CRT and MFES scores (p<0.05). Conclusion: There is a positive relationship between physical performance and BMD. Therefore, improved physical performance can have a beneficial effect by reducing osteoporosis in elderly women, considering a positive relationship between physical performance and BMD.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.26 no.1
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• pp.1-8
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• 2020

Background: The aim of this study was to conduct an Otago exercise program with total knee replacement patient (TKR) in a clinical setting and ascertain its effects on balance, walking ability and falls efficacy. Methods: The participating subjects were 30 people who had been diagnosed with TKR. They were assigned to two groups (Exp; Otago exercise and general physical therapy, n=15; Con; balance exercise and general physical therapy, n=15), and the exercises were conducted for three sessions per week for four weeks. The main balance outcomes were evaluated using the timed up and go test (TUG), while walking ability was evaluated using the 10m walk test (10MWT), direction change ability was measured using the figure 8 of walk test (F8WT), and the decrease of fear was evaluated using the modified falls efficacy scale (MFES). Results: In the analysis results, the Exp group showed significant increases in TUG, 10MWT, and F8WT within the both groups. There were significant differences in all variables between the Exp group and the Con group at the post-intervention evaluation, but there was no significant difference between the groups with respect to the TUG. Conclusion: The results of this study demonstrated that Otago exercise would be useful to improve balance and walking for TKR patients who want to improve their abilities and activities of daily living.

• Journal of the Korean Society of Physical Medicine
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• v.11 no.2
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• pp.63-70
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• 2016

PURPOSE: The aim of this study was to conduct an Otago exercise program with stroke patients in a clinical setting and ascertain its effects on balance and walking ability. METHODS: The participating subjects were 45 people who had been diagnosed with stroke. They were assigned to two groups (Otago exercise; OE, n=22; balance exercise; BE, n=23), and the exercises were conducted for three sessions per week for eight weeks. The main balance outcomes were evaluated using the timed up and go test (TUG) and the four step square test (FSST), while walking ability was evaluated using the 10 m walk test (10MWT), direction change ability was measured using the figure 8 of walk test (F8WT), and the decrease of fear was evaluated using the modified falls efficacy scale (MFES). RESULTS: In the analysis results, the Otago exercise group showed significant increases in TUG, FSST, 10MWT, and F8WT within the both groups. There were significant differences in all variables between the OE group and the BE group at the post-intervention evaluation, but there was no significant difference between the groups with respect to the 10MWT. This study showed that conducting Otago exercise in stroke patients increased the main outcomes for TUG, FSST, F8WT scores, but not for 10MWT. CONCLUSION: The results of this study demonstrated that Otago exercise would be useful to improve balance and gait for stroke patients who want to improve their abilities and activities of daily living.