• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.29 no.2
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• pp.1-10
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• 2023

Background: The purpose of this study was to evaluate the pain, static balance, and dynamic balance abilities of women with chronic low back pain by performing thoracic and hip joint mobility exercises and lumbar stability exercises. Methods: The subjects of this study were 20 adult women with low back pain who lived in C city for more than 12 weeks. The experimental group performed the thoracic and hip mobility exercises with lumbar stability exercises and the control group performed the lumbar stability exercise with general exercise program. Both groups participated in the exercise program three times a week for six weeks, from December 20, 2022 to March 7, 2023. The balance ability were measured using BT4, and pain was measured using visual analog scale (VAS). The collected data were analyzed by independent sample t-test and paired t-test using SPSS version 23.0 program. Results: After 6 weeks of intervention, there was a significant change in VAS between the experimental group and the control group, and there was no difference between the two groups (p>.05). In the case of balance ability, there was a no significant increase in the experimental group (p>.05). Conclusion: Thoracic and hip joint mobility exercises and lumbar stability exercises for adult female patients with chronic low back pain may be partially effective in static balance and dynamic balance.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.30 no.1
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• pp.1-13
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• 2024

Background: The purpose of this study was to investigate the effects of stabilization exercise performed after abdominal drawing exercise using pressure biofeedback for 8 weeks on pain level, performance of transverse abdominis, back pain disability index, and quality of life in women in their 30s less than one year after giving birth. Methods: A total of 20 women who voluntarily participated less than one year after giving birth were randomly divided into a control group and an experimental group. The control group was subjected to abdominal drawing exercise before lumbar stabilization exercise, and the experimental group was subjected to abdominal drawing exercise using pressure biofeedback before lumbar stabilization exercise thrice a week for eight weeks. The quadruple visual analog scale (QVAS), the performance of transverse abdominis, the Korean version of the Oswestry disability index (KDOI), the inventory of functional status after childbirth (IFSAC), and the Short Form-12 item (SF-12) were evaluated before and after the intervention. Results: Except for the Physical Components Summary Scale of SF-12, after the intervention, the experimental group showed significant improvement in QVAS, performance of Transverse abdominis , KDOI, and Mental Components Summary Scale of SF-12 compared to the control group. Conclusion: Selective deep muscle activation through abdominal drawing exercises using pressure biofeedback can help rehabilitation for women after postpartum.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.30 no.1
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• pp.61-73
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• 2024

Background: The purpose of this study is to investigate the effect of ankle strengthening and proprioceptor exercise, including gluteus-medius strengthening exercise, on ankle strength, dynamic and static balance, ankle function, and quality of life in 24 adults without ankle instability. Methods: After randomly classifying 12 people per group into the experimental group and the control group, Home-exercise rehabilitation program was conducted for a total of 2 weeks. The control group performed ankle strengthening and proprioceptor exercise 5 times a week for 15 minutes, and the experimental group was performed by adding 15 minutes of gluteus-medius strengthning exercise to the exercise performed by the control group. The SPSS 27.0 program was used for statistical analysis. Results: Both groups showed statistically significant differences in the plantar flexion muscle strength, Y-Balance test, side hop test, quality of life. But, only experimental group showed statistically significant differences dorsi-flexion muscle strength and hip abduction muscle strength. There was no statistical difference in comparison of difference values between groups. Conclusion: These exercises can provide useful home rehabilitation programs for sports populations seeking to prevent injury in sports.

• Journal of International Academy of Physical Therapy Research
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• v.9 no.3
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• pp.1549-1557
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• 2018

This study examined the effects of group exercise program on health conditions and quality of life in cerebral palsy. Adults with cerebral palsy in their 20's who participated in the evaluation of measurement tools prior to and following the experiment. The control group was engaged in manual exercise for the range of joint movement and extension exercise for arms, legs and trunk, and experimental group performed group exercise program including boccia exercise. The health condition and quality of life of the experimental group were significantly increased after intervention (.05<). There was a slight increase in the control group, however it was not statistically significant. As a result of comparing the health condition and quality of life of the two groups, the value of the experimental group was significantly higher than that of the control group. The results of this study suggest that exercise programs for patients with cerebral palsy in the twenties are considered as beneficial interventions to improve health conditions and quality of life.

• Journal of Korean Physical Therapy Science
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• v.16 no.3
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• pp.19-27
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• 2009

Background: To study the effect of the home exercise program on pain, flexibility, endurance of extensor in chronic back pain patients, and suggest optimal method for home exercise program. Methods: I divided into two groups who has chronic back pain; one is control group who was given a treatment at the hospital only and the other is experimental group who did another exercise after treatment at the hospital, and there were 10 people in each group. The manual therapy were given to all the patients in each group after applying a stupe and an electric treatment, but the experimental group conducted another exercise program at homes. All the exercise programs were applied to patients 12 times for 4 weeks totally. Result: SPSS for win version 12 was used for statistic analysis and independent t-test was used to find changes between two groups. VAS scale was used to show changes in pain between each group. The grade of pain was decreased between pre&post test to -5.60 in control group and -4.80 in experimental group but there wasn't significant difference between each group. Finger tip-to-floor test was used for the flexibility changes and it was increased between pre&post test in both groups but the change of flexibility between each groups didn't show statistical difference. Biering-Sorensen test was used to measure the endurance of extensor and it was increased between pre&post test in both groups but there wasn't significant difference between each group. Conclusion: As you read the results above, for a chronic low back pain patient, application of the manual therapy showed that it has effect on decrease of low back pain, increase of flexibility and endurance of extensor. However, the effect of home exercise treatment was not sure about improvements for chronic low back pain patient. So I think there should need further study about the effect of home exercise treatment except the treatments at hospital and the thorough education for the exercise of lumbar should be done before the study for the accurate experiment.

• Journal of The Korean Society of Agricultural Engineers
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• v.62 no.1
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• pp.1-16
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• 2020

The APEX model has been developed for assessing agricultural management efforts and their effects on soil and water at the field scale as well as more complex multi-subarea landscapes, whole farms, and watersheds. Recently, a key component of APEX application, named APEX-Paddy, has been modified for simulating water quality by considering paddy rice management practices. In this study, the performance of the APEX-Paddy model was evaluated using field data at Iksan experimental paddy sites in Korea. The discharge and pollutant load data during 2013 and 2014 were used to both manually and automatically calibrate the model. The APEX auto-calibration tool (APEX-CUTE 4.1) was used for model calibration and sensitivity analysis. Results indicate that APEX-Paddy reasonably performs in predicting runoff discharge rate and nitrogen yield. However, sediment and phosphorus yield is not correctly predicted due to the limitation of model schemes. With APEX-Paddy, the performance in reproducing the discharge and nitrogen yield is found to be a satisfactory level after manual calibration. The manually calibrated model performed better than the automatically calibrated model in nearly all comparisons. For runoff, manual calibration reduced PBIAS while R² and NSE values of the automatically calibrated model were the same as the manual calibration. For T-N, NSE and PBIAS were reduced when using manual calibration, whereas R² value was the same as manual calibration. The limitation of the APEX-Paddy model for predicting sediment, as well as the phosphorous yield, was discussed in this study.

• Journal of Advanced Marine Engineering and Technology
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• v.22 no.3
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• pp.285-293
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• 1998

This paper presents an experimental study on condensing heat transfer characteristics of R-22 alternative refrigerants, R-290 and R-410a on water sources heat pump. The apparatus mainly consisted of vapor pump condenser used to the test section evaporator manual expansion valve and measuring device. Test section constructed a smoothed tube of 10.07 mm ID and 12.7mm OD with a total length 6,300 mm was horizontal double pipe counterflow condenser. The refrigerants R-22, R-290 and R-410a were cooled by a coolant circulated in a surrounding annulus. Experimental range of mass velocities was changed from about 100 to 300 kg/($m^2$.s) and inlet quality 1.0 The credibility of experimental apparatus was 6 percent between heating capacity and cooling capacity added to compressor shaft power. The condensing heat transfer coefficients were increased with increasing mass velocity. However in case of R-290 they were more increasing than those of R-410a and R-22 Comparing the heat transfer coefficient between the experimental data and other's data the Cavallini-Zecchin's data was revealed to more similar prediction of author's experimental results on the average heat transfer coefficients.

• Korean Journal of Adult Nursing
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• v.20 no.1
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• pp.55-64
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• 2008

Purpose: The purpose of this study was to identify the effect of Meridian pressure on the functions of upper extremities and discomfort of ADLs of hemiplegic patients. Methods: The research design was a nonequivalent control group, non-synchronized design. Subjects were 35 hemiplegic patients who were hospitalized at L Oriental Medical Hospital; 18 for the experimental group and 17 for the control group. The experimental group was given meridian pressure for 10 minutes daily for 2 weeks. The data were analyzed by SPSS 12.0 program. The ${\chi}^2$-test and t-test were used for the two groups' homogeneity, and t-test was used for the hypothesis test. Results: Manual muscle test, ROMs of wrist extension, elbow flexion, and shoulder extension of the experimental group increased compared to the control group. Shoulder pain and index finger circumference of the experimental group decreased compared to the control group. The experimental group showed to have less discomfort of ADLs than the control group. Conclusion: The study results verified that meridian pressure is effective for improving the functions of hemiplegic patients' upper extremities as well as reducing discomfort of ADLs.

• Journal of Korean Academy of Nursing
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• v.32 no.4
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• pp.459-469
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• 2002

This study was to examine the effects of the Dan-Jun Breathing Exercise Program on pulmonary function and psychological health promotion of women in midlife. Method: Experimental group(20) was matched to control group(20) according to age, education, religion and marital status. The Dan-Jun Breathing Exercise Program was carried out for 80 minutes a day, 3 times a week for 12 weeks. FVC and FEV1.0/FVC(%) were measured by using the Health Management System developed by the Korean Physical Science Institution. The scores of depression, anxiety and hostility were measured by the Korean Manual of Symptoms-Checklist -90 revision. Result: 1) FVC of the experimental group was higher than that of the control group, FEV1.0/FVC(%) was not higher than that of the control group. 2) The scores for depression, anxiety and hostility in the experimental group were lower than those of the control group. 3) FVC of 6 weeks and 12 weeks experiment in the experimental group was higher than that of pre-experimental group. Conclusion: The Dan-Jun Breathing Exercise Program promotes the Pulmonary function and psychological health of women in midlife.

• Journal of Korea Multimedia Society
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• v.17 no.3
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• pp.342-352
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• 2014

This paper proposes an automatic segmentation method of cortical bone and trabecular bone and describes an implementation of structural analysis method of trabecular bone in micro-CT images. The proposed segmentation method extract bone region with binarization using a threshold value. Next, it finds adjacent contour lines from outer boundary line into inward direction and sets candidate regions of cortical bone. Next it remove cortical bone region by finding the candidate cortical region of which the average pixel value is maximum. We implemented the method which computes four structural indicators BV/TV, Tb.Th, Tb.Sp, Tb.N by using VTK(Visualization ToolKit) and sphere fitting algorithm. We applied the implemented method to twenty proximal femur of mouses and compared with the manual segmentation method. Experimental result shows that the average error rates between the proposed segmentation method and the manual segmentation method are less than 3% for the four structural indicatiors. This result means that the proposed method can be used instead of the combersome and time consuming manual segmentation method.