• Physical Therapy Rehabilitation Science
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• 제5권3호
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• pp.132-137
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• 2016

Objective: Eversion of the foot is created with internal rotation of the shank, and inversion of the foot is created with external rotation of the shank. The purpose of the study was to investigate the effect of continuous changes in the angle of the subtalar joint on lower extremity alignments. Design: Cross-sectional study. Methods: Seventeen healthy young adult subjects recruited. The subjects were asked to stand up in a natural standing position on a footplate with eye open and equal weight on each foot for 10s in two different conditions: The right subtalar joint was everted continuously $0^{\circ}-20^{\circ}$ and in separate segments of $0^{\circ}$, $5^{\circ}$, $10^{\circ}$, $15^{\circ}$, $20^{\circ}$. The averages of three trials were used. The observation of the changes in the lower extremity was performed with the use of 3-dimensional motion analysis. For data analysis, the SPSS 18.0 software using paired t-test and repeated measures analysis of variance (ANOVA) was applied. Results: The angle was significantly increased at the horizontal rotation angle of the shank, thigh, and ankle without anterior rotation of the pelvis (p<0.05). The maximum horizontal rotation angle at the thigh on $20^{\circ}$ was $-4.52^{\circ}$ in static, and $-3.10^{\circ}$ in the dynamic conditions compared to $0^{\circ}$. Conclusions: Increased unilateral foot pronation, thigh, shank, ankle horizontal rotation variance was significantly effective. The observation of the changes in foot abduction with the use of a 3-dimensional motion analysis augmented in predicting the angle values of each segment of the lower extremity. In further studies, a comparison of the right and left subtalar joints need to be investigated.

• 한국세라믹학회지
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• 제24권3호
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• pp.289-295
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• 1987

The changes of physical properties of portland cement pastes and mortars were investigated by addition of sodium gluconate. Flow table experiment and viscosity measurement were took in order to find dispersing effect, and time-dependent changesof viscosity and rates of hydration heat evolution were carried out for the sake of finding retardation effect of hydration. And changes of physical properties of cement pastes and mortars were discussed by setting time, compressive strength and porosity.

• 대한물리의학회지
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• 제5권4호
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• pp.645-654
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• 2010

Purpose : The purpose of this study was to investigate changes in the gross motor function, self-esteem and social ability of children with cerebral palsy from group exercise program for physical and emotional interaction. Methods : Five cerebral palsy children who live in U city were recruited this study. Exercise sessions were held for 1 hour per session, once per week, for 12 consecutive weeks. At pre-treatment and post-treatment, subject were tested gross motor function measure, self-esteem and social ability. Results : After 12 weeks of paticipation in the group exercise program for physical and emotional interaction, there were improvements for gross motor function measure, self-esteem and social ability. Conclusion : Group exercise program for physical and emotional interaction can improve gross motor function, self-esteem and social ability.

• The Journal of Korean Physical Therapy
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• 제29권6호
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• pp.299-302
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• 2017

Purpose: The purpose of this study was to examine the effects of spinal decompression therapy on pain and disability in patients with chronic low back pain. Methods: Twenty patients with chronic low back pain were divided into an experimental group (spinal decompression therapy, n=10) and a control group (conservative physical therapy, n=10). Both groups were treated three times a week over a four-week period. Results: The comparison of between-group changes post-treatment revealed statistically significant lower levels of pain and disability in the experimental group than the control group. The comparison of within each group changes before and after the treatment showed statistically significant declines in pain and disability indexes of both groups. Conclusion: Spinal decompression therapy may be an effective intervention for improving pain and disability in patients with chronic low back pain.

• The Journal of Korean Physical Therapy
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• 제13권2호
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• pp.313-324
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• 2001

The 15 male students of T-college which is located in Taegu, who don't have any cardiovascular diseases and skin diseases and agreed to the experiment for finding out the effects of hot and cold therapy. They were divided 5 experimental groups, that is hot therapy in blood Pressures, hot therapy group showed significantly difference of systolic blood Pressure. And the hot therapy group and hot and cold therapy showed the distinctive differences in Scheffes' s analysis after the fact. 3. There was no significant difference in pulsation between before and after experiment and there were no differences in each group. 4. The hot therapy group showed significant difference in WBC and didn't show any difference in RBC(p<.05). 5. Timing does not effect to each group in the changes of HGB and HCT. 6. In the comparison between before and after the experiments in the changes of MCV, cold therapy group showed significant measurement. And in the comparison between before and after one hour the experiment in the changes of MCV, cold therapy group showed significant measurement. The experimental group 1 and 3 showed the distinctive differences in Scheffe' s analysis after the fact(p<.05). 7. In the comparison between before and after one hour experiments in MCV changes, the cold therapy group had significant differences(p<.05). 8. There were no significant differences between before and after the experiments in MCHC changes. 9. In the comparison between before and after one hour experiments in PLT changes, cold therapy group had significant changes(p<.05) and there were no differences among three group.

• 대한통합의학회지
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• 제3권4호
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• pp.29-35
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• 2015

Purpose: The purpose of this study was to effect of application methods of stretching exercise on angular variation and muscle activation changes in the hallux valgus. Method : This study was performed on twenty subjects. Twenty subjects were divided into two groups; Agonist Contraction(AC)(n=10), Hold-relax with Agonist Contraction(HR-AC)(n=10). Both of the group performed the exercise 5 times a week for 6 weeks. The data was analyzed by the paired t-test for comparing before and after changes of factors in each group and the independent t-test for comparing the between groups. Result : In the within group comparisons, HR-AC group abductor hallucis muscle activity showed significant difference between before and after the intervention(p<0.01). And all the two groups, there were significant decreased in hallux valgus angle(p<0.01). In the comparison of the two groups, there were significant difference among the two groups in abductor hallucis muscle activity(p<0.01). Conclusion : The findings of this study, we found that the HR-AC technique were more effective than AC technique in increase in abductor hallucis muscle activity.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제34권4호
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• pp.242-249
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• 2023

Objectives: Following the coronavirus disease 2019 (COVID-19) pandemic, adolescents have experienced decreased physical activity and a decline in mental health. This study analyzed the association between changes in depressed mood after the COVID-19 pandemic and physical activity among adolescents. Methods: The analysis was based on the results of the 17th Youth Health Behavior Online Survey conducted in 2021, which included 54848 middle and high school students in South Korea. Information on physical activity included low-intensity physical activity lasting >60 min/day, high-intensity physical activity, and strength training exercises. A logistic regression analysis was performed to evaluate the association between physical activity and changes in depression after the COVID-19 pandemic. Results: After adjusting for sociodemographic characteristics and previous depression, adolescents who performed strength training exercises more than once per week had a 0.95-fold lower risk (odds ratio [OR]=0.948, 95% confidence interval [CI]=0.905-0.994, p=0.027) of increasing depression after the COVID-19 pandemic, while the risk of decreasing depression increased by 1.22-fold (OR=1.215, 95% CI=1.131-1.305, p<0.001). The results were not significant for low-intensity physical activity for >60 min/day and high-intensity physical activity. Conclusion: Strength-training exercises are significantly associated with the prevention of depression among adolescents following the COVID-19 pandemic.

• 국제물리치료학회지
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• 제7권1호
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• pp.949-955
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• 2016

The purpose of the study was to investigate effects of Low intensity cardiac rehabilitation, using a treadmill, on the myocardial structure. We identified the effects by analyzing changes in the rats' weights and the results of biopsies. Twenty Sprague-Dawley male rats, 50 weeks old, were randomly divided into the exercise group and the control group. myocardial infarction(MI) was induced by ligaturing their left anterior descending artery. After the acute MI induction, two rats of each group began to fall dead, therefore, eight of each group completed at the end of the experiment. We used treadmills for animals for the exercise group. This exercise group performed 30 minutes of exercise five times per week for six weeks, while the control group did not perform any exercise. No statistically significant differences in weight were found in within group comparison and between group comparison. Furthermore, we observed histological changes in the myocardium using Hematoxylin & Eosin and Masson's trichrome staining in both groups. Low-intensity exercise inhibited myocardial fibrosis, may serve as a reference in the cardiopulmonary field, which plays a role in rehabilitating patients with cardiac disorders, including acute MI.

• The Journal of Korean Physical Therapy
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• 제23권6호
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• pp.61-69
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• 2011

Purpose: This study investigated the changes in body composition and serum lipid composition in obese women that were caused by a 12-week circuit exercise regime including both field and aquatic activities. Methods: Subjects comprised a total of 36 women who had a BMI of more than $25kg/m^2$. The simple obesity group (n=17) had no current or past record of medical complications, whereas the group with complications (n=19) also suffered from hypertension and/or diabetes. The circuit exercise program consisted of 12 weeks of 60%HRmax exercise sessions, five days a week. Results: While changes in every variable of body composition were significant, there was no statistically significant difference in the changes in serum lipid composition variables. With the exception of BMI, the correlation between the simple/complicated groups and exercising was statistically insignificant. Conclusion: These findings suggest that while a complex circuit weight exercise program that includes aquatic exercises significantly and positively alters obese patients' body composition it does not create statistically significant changes in their serum lipid composition. It can still be concluded, however, that increasing the duration of the exercise program would be effective to influence this. Moreover, personalized exercise programs that fit the needs of the individual participants seem necessary, given that the effect of exercise on body composition and serum lipid composition was greater in patients with simple obesity than in those with complications.

• The Journal of Korean Physical Therapy
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• 제30권2호
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• pp.41-46
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• 2018

Purpose: This study examined the effects of knee extension exercise using blood flow restriction on the changes in the thickness and static balance ability of the tendon of the rectus femoris muscle and achilles tendon. Methods: A total of 30 subjects was were divided into two groups of 15 subjects each. The changes in the thickness and balance of their tendons were measured by ultrasonography and balance equipment. The measurements were taken three times: before the experiment, 4 weeks after, and 8 weeks after. The results were analyzed by repeated measure ANOVA, one-way ANOVA was conducted in cases where there were time-to-group interactions in the intra-individual effects test. Results: Significant differences in the thickness of the tendon of the rectus femoris muscle and Achilles tendon were found between the groups, over time, and in the time-to-group interactions (p<0.05). The changes in balance in both feet when the supporting positions between eye-open and eye-closed states were significantly different in the time-to-group interactions (p<0.05), but were not different between the groups (p>0.05). Conclusion: Knee extension exercise using blood flow restriction leads to significant differences in the increase in tendon thickness and changes in balance, indicating that the results of this study can be utilized as basic data for future studies and for rehabilitation treatment at clinics.