• The Journal of Korean Physical Therapy
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• v.15 no.4
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• pp.140-150
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• 2003

The purpose of study was to compare change of blood volume on upper limb of stimulus site on interferential current therapy. Twenty university student(twelve females. eight males :mean aged 23.08) with health condition participated this study MP150 system(biopac system) was used to measured blood volume. PPG senser was located thrum finger end The obtain result are as follows. 1. The result of this study were following that stimulate time blood volume were significantly increased sympathetic stimulation group compared with muscle stimulation group(p<.05). 2. The result of this study were following that stimulate time blood volume were significantly increased sympathetic stimulation group compared with muscle stimulation group(p<.05). 3. The result of this study were following that sympathetic stimulation group were significantly increased stimulate time blood volume compared with stimulate time blood volume(p<.05). 4. The result of this study were following that muscle stimulation group were significantly increased stimulate time blood volume compared with stimulate time blood volume(p<.05).

• Journal of Korean Physical Therapy Science
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• v.25 no.1
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• pp.62-74
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• 2018

Background: The purpose of this study is intended to evaluate the effectiveness and analyse the change on flexibility, muscular volume and pain of university students with low back pain by stabilization exercise using XCO. Methods: The subjects(N=23) with low back pain are recruited from K university located Chungbuck. The subjects which are divided to 2 group as experimental group(N=12) conducted the stabilization exercise using XCO and control group(N=11) conducted the general stabilization exercise. The flexibility, muscular volume and pain were measured before and after intervention. Results: There were no significant differences(p>.05) in sex, age, height and weight among subjects. Also there were no significant differences(p>.05) in muscular volume and pain between of the experimental group and control group. A significant difference(p<.05) in the flexibility, contraction EO(External Oblique), contraction IO(Internal Oblique), contraction TA(Transverse Abdominal) and pain in the experimental group. There was significant difference(p<.05) in the flexibility, contraction EO(External Oblique), contraction IO(Internal Oblique) and pain in the control group. There was a significant difference(p<.05) in the flexibility of the experimental group between the control group. Conclusion: Based on this study, through a variety of age and various intervention period to apply more subjects conducting Stabilization exercise using XCO should continue.

• The Journal of Korean Physical Therapy
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• v.19 no.6
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• pp.23-30
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• 2007

Purpose: This study examined the correlation between the maximum voluntary isometric contraction (MVIC) and the muscle architecture in the extensor carpi radialis longus muscle during MVIC. Methods: The muscle area, volume were measured using a ultrasound imaging system to obtain the muscle architecture during the MVIC. For the mechanical muscle strength measurements, the MVIC was obtained using a dynamometer. Results: There was a significant correlation between the MVIC and the muscle area (r=0.498, p<0.01) and muscle volume (r=0.602, p<0.001). There was a significant correlation between the MVIC and density (r=-0.429, p<0.05). The area showed significant correlations with the muscle volume (r=0.699, p<0.001) and density (r=-0.429, p<0.05). In addition, there was a correlation between the volume and muscle density (r=0.555, p<0.01). Conclusion: There is close relationship between the MVIC and the muscle architecture in the extensor carpi radialis longus muscle during the MVIC.

• Carbon letters
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• v.3 no.3
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• pp.127-132
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• 2002

Unidirectional polymer composites were prepared using high-strength carbon fibers as reinforcement and phenolic resin as matrix precursor with keeping fiber volume fraction at 30, 40, 50 and 60% respectively. These composites were carbonized at $1000^{\circ}C$ and graphitised at $2600^{\circ}C$ in the inert atmosphere. The carbonized and graphitised composites were characterized for mechanical properties as well as microstructure. Microscopic studies were carried out of the polished surface of carbonized and graphitised composites after etching by chromic acid, to understand the effect of fiber volume fraction on oxidation at fiber-matrix interface. It is found that the flexural strength in polymer composites increases with fiber volume fraction and so does for the carbonised composites. However, the trend was found to be reversed in graphitised composites. In all the carbonized composites anisotropic region has been observed at fiber-matrix interface which transforms into columnar type microstructure upon graphitisation. The extension of strong and weak columnar type microstructure is function of fiber volume fraction. SEM microscopy of the etched surface of the sample reveal that composites containing 40% fiber volume has minimum oxidation at the interface, revealing a strong interfacial bonding.

• Journal of the Korean Society of Physical Medicine
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• v.7 no.2
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• pp.157-164
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• 2012

Purpose : The Purpose of this study was on determine whether thoracic expension exercise might increase the pulmonary function of the patients with stroke. Methods : Fourty paients with stroke were randomly assigned to experimental(n=20) and control group(n=20). During four weeks, each group participated thirty minutes for five times per week. Subjects were assessed using pre-value and post-value measurement pulmonary function(Forced vital capacity, Forced expiratory volume at one second, FEV1/FVC, Peak expiratory flow, Tidal volume, vital capacity, Inspiratory capacity, Expiratory reserve volume, Inspiratory reserve volume). Results : These finding suggest that experimental group was significant increase in FVC, FEV1, PEF, TV, IC, IRV, ERV($p$<.05). In comparison of two group, experimental group was high pulmonary function than control group. Conclusion : This study showed experimental group can be used to improve pulmonary function than control group. Thus it indicates that the thoracic expension exercise will be more improved through the continued respiratory exercise program.

• The Journal of Korean Physical Therapy
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• v.14 no.4
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• pp.119-130
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• 2002

The purpose of this study was to evaluate hemodynamics of intracranial blood flow for obtain clinically useful reference values and assess cerebral hemodynamics change with aging. 81 normal Korean subjects(age, 14$\thicksim\∼\thicksim$70 years) examined who han no history of neurologic disease and the subjects divided into group A(age, 14$\∼$39 years), group B(age, 40$\∼$59 years) and group C(age, 60$\∼$70 years). Transcranial doppler was use for measured the maximum velocity(Vmax), mean velocity(Vmean), pulsatility index(PI), resistive index(RI), stenosis index(SI) and depth of sample volume. Vmax was 99.1 1cm/s, Vmean was 63.57cm/s, PI was 0.85, RI was 0.56, SI was 31.94 and depth of sample volume was 52.35 in middle cerebral artery. Vmax was 85.54cm/s, Vmean was 52.52cm/s, PI was 0.82, RI was 0.55, SI was 34.48 and depth of sample volume was 73.62 in anterior cerebral artery. Vmax was 75.45cm/s, Vmean was 45.60cm/s, PI was 0.82, RI was 0.58, SI was 36.14 and depth of sample volume was 62.35 in posterior cerebral artery. Vmax was 70.44cm/s, Vmean was 47.07cm/s, PI was 0.87, RI was 0.58, SI was 29.83 and depth of sample volume was 75.23 in basilar artery Vmax was 63.92, Vmean was 42.42, PI was 0.89, RI was 0.58, SI was 29.89 and depth of sample volume was 66.65 in vertebral artery. Vmax and Vmean was significantly decreased with increasing age in middle cerebral artery, anterior cerebral artery, posterior cerebral artery, basilar artery and vertebral artery And PI and RI was significantly increased with increasing age in basilar artery and vertebral artery. And I suggest that transcranial doppler sonography can be used as one of useful clinical tool for detection of cerebral hemodynamics.

• Membrane Journal
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• v.29 no.4
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• pp.191-201
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• 2019

Before the commercialization of polymeric membranes applicable for industrial application, the homework remains for the high-performance polymers to overcome the practical challenge: long-term stability for prolonged service time. Polymers of intrinsic microporosity (PIMs), exhibiting exceptionally high fractional free volume and high permeability, are susceptible to physical aging where the extra volume created by the inefficient ladder-type packing will lead them from the volumetric equilibrium and reduce the free volume/permeability over time. Here, we will re-examine the physical aging of polymers of intrinsic microporosity, and discuss some of the most prominent attempts to mitigate physical aging in PIMs.

• Journal of the Korean Society of Physical Medicine
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• v.6 no.3
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• pp.247-256
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• 2011

Purpose : The purpose of this study were to determine whether changes of position might effect the chest expansion and pulmonary function of the 20s men obesity. Methods : Thirty subjects with obesity(M:30, % fat>25.0) and thirty normal subjects(M:30, % fat<24.9) were participated in experiment. Subjects were assessed according to position changes(supine position, $45^{\circ}$ lean sitting position, $90^{\circ}$ sitting position) using chest length(chest length for resting, chest expansion) and pulmonary function (Tidal volume, Inspiratory capacity, Vital capacity, Inspiratory reserve volume, Expiratory reserve volume) by the CardioTouch 3000S(BIONET, USA). Repeated measure ANOVA was used to compare each region data of chest length and pulmonary function according to changes of position with obesity and normal subjects. Results : These findings suggest that the obesity can be appear to low chest expansion and pulmonary function than normal subjects on position method. In comparison of three experimental position, supine position was more low. Conclusion : This study showed position of the obesity appear low chest expansion and function of pulmonary volume than normal subjects, and thus it indicates that the pulmonary function of the obesity will be suggest objective respiratory data through the exercise program.

• Journal of Korean Physical Therapy Science
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• v.9 no.4
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• pp.73-81
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• 2002

The purpose of this study was to investigate factors affecting physical therapist's job satisfaction at public health center. The data were collected from May 10 to 12, 2002 and 117 valid questionnaires were obtained and analyzed. They were analyzed by the percent, frequency, t-test, one-way ANOVA and Pearson correlation coefficiency. The results of the study were as follows: 1. The average marks by their job satisfaction factors indicated 3.56 for identity guarantee, 3.20 for administration, 2.78 for duty volume, 2.53 for relation with colleague. 2. There was statistically a difference of the education degree in relation with colleague. 3. There were statistically a difference of the age, total career, grade in rank, the number of colleague in identity guarantee. 4. No statistical significance were observed with the factors of incumbent satisfaction, duty volume, flexibility at work, administration.

• The Journal of Korean Physical Therapy
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• v.14 no.2
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• pp.98-106
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• 2002

To understand the trends in research in the fields of physical therapy, all issues of the Journal of Korean Society of Physical Therapy were reviewed from volume 1 in 1989 to volume 13, number 2 in 2001 in regard to research themes, research objects, and research designs. The number of articles dramatically increased in recent years. Although exercise physiology, biomechanics, and therapeutic exercise were major subjects of interest, alternative treatment modalities such as massage, taping, acupuncture were fields of increasing interests. There were also increasing interests in medical engineering and basic science. Cerebrovascular accidents, elderly people, sportsmen were research objects of increasing frequency. In regard to research designs, experimental research designs such as randomized controlled designs and nonequivalent controlled designs were increasingly adopted in clinical research.