• Safety and Health at Work
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• v.12 no.4
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• pp.511-516
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• 2021

Background: Difficulties in walking and balance are risk factors for falling. This study aimed to predict dynamic balance based on demographic information and anthropometric dimensions in construction workers. Methods: This descriptive-analytical study was conducted on 114 construction workers in 2020. First, the construction workers were asked to complete the demographic questionnaire determined in order to be included in the study. Then anthropometric dimensions were measured. The dynamic balance of participants was also assessed using the Y Balance test kit. Dynamic balance prediction was performed based on demographic information and anthropometric dimensions using multiple linear regression with SPSS software version 25. Results: The highest average normalized reach distances of YBT were in the anterior direction and were 92.23 ± 12.43% and 92.28 ± 9.26% for right and left foot, respectively. Both maximal and average normalized composite reach in the YBT in each leg were negatively correlated with leg length and navicular drop and positively correlated with the ratio of sitting height to leg length. In addition, multiple linear regressions showed that age, navicular drop, leg length, and foot surface could predict 23% of the variance in YBT average normalized composite reach of the right leg, and age, navicular drop, and leg length could predict 21% of that in the left leg among construction workers. Conclusion: Approximately one-fifth of the variability in the normalized composite reach of dynamic balance reach among construction workers using method YBT can be predicted by variables age, navicular drop, leg length, and foot surface.

• Journal of Chest Surgery
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• v.15 no.3
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• pp.316-320
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• 1982

We had operated 5 cases of residual ventricular septal defect after primary repair of isolated ventricular septal defect from 1975 to 1981. Three were male and two were female. Their ages ranged from 7 to 25 years old. In 4 cases previous patch was detached and one case had left ventricular - right atrium communication. They had had residual symptoms after primary operation and chest x-ray showed cardiomegaly. Cardiac catheterization was performed in all cases. Residual left to right shunt was more than 1.4: 1 with pulmonary hypertension. Their postoperative course were uneventful and long term follow up revealed that they were good health until one to 4 years.

• Journal of the Korean Society of School Health
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• v.28 no.3
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• pp.211-219
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• 2015

Purpose: The purpose of this study was to examine the effect of health education based on life skill training (LST) on middle school students' health knowledge, attitude, and behavior. Methods: For this study, 961 middle school students, residing in Seoul, Korea, were selected. The students received health education one day a week for 7 weeks from September 1, 2014 to October 25, 2014. Before and after the whole education program, the students filled out questionnaires surveying on their health knowledge, attitude, and behavior. Excluding inappropriate data, the data of 843 students was analyzed through Paired t-test. Results: After the education program based on LST, there were statistically significant increases in the scores for knowledge about drinking, body image distortion, good eating habits, right usage of smartphone, and prevention of smartphone addiction (p<.05). There were also statistically significant increases in the scores for attitude toward smoking, drug, good eating habits and prevention of smartphone addiction (p<.05). There were statistically significant increases in the scores for behavior regarding drug, good eating habits, right usage of smartphone and prevention of smartphone addiction (p<.05). Conclusion: Health education based on life skill training was especially effective in improving the subjects' scores for health knowledge, attitude, and health behavior. Therefore, various and systemic LST educational programs should be developed and implemented and their effects should be evaluated in further studies.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.25 no.4
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• pp.554-565
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• 2015

Objectives: The purpose of this study was to measure estheticians' grip and pinch strength in the hand parts and identify related factors according to general characteristics. Methods: A Jamar dynamometer was used to measure grip strength and a Jamar pinch gauge was used to measure tip, palmar and lateral pinch strength. General data were collected through a questionnaire survey among 116 estheticians from 31 skin care centers and spas. Results: The subjects' mean grip strength was 23.95 kgf for the right hand and 23.42 kgf for the left hand with the dominant right hand recording slightly higher mean grip strength. Their mean pinch strength was the highest with lateral pinch(right 4.89 kgf, left 4.69 kgf), which was followed by palmar pinch(right 3.77 kgf, left 3.88 kgf) and tip pinch(right 2.29 kgf, left 2.25 kgf), in that order. Conclusions: The grip and pinch strength of the hand parts was high when estheticians' commonly used both hands for massage instead of just one. The use of both hands is recommended to protect the hand parts during massage.

• Journal of Korean Physical Therapy Science
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• v.16 no.4
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• pp.59-65
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• 2009

Background: Human body is formed of symmetric bilateral structures that are comprised of eye, upper arm, lower arm and etc. but, we are used only dominant components. The purpose of this study was to analysis length cognition ability in dominant eye & hand. Method: Total 180 persons (male 32, female 138) were participated in this study. They were tested with 'hole in the card' test for identification of dominant eye's side and the question for identification of dominant hand's side, then the length cognition ability was measured in right & left axillary level by describing 10cm line. Results: The results by independent t-test were as follows. In difference of length cognition ability in right axillary level between right dominant eyed group & left dominant eyed group, right dominant eyed group was superior to left dominant eyed group, but significant difference was not existed statistically(p>.05). In left axillary level, right dominant eyed group was superior to left dominant eyed group, but significant difference was not existed statistically(p>.05). In axillary level of dominant eye's side, non-crossed group was superior to crossed group, but significant difference was not existed statistically(p>.05). In axillary level of non-dominant eye's side, non-crossed group was superior to crossed group, but significant difference was not existed statistically(p>.05). Conclusion: These result can be applied to the learning of palpation & observation skill in physical therapy.

• Korean Circulation Journal
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• v.48 no.11
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• pp.1014-1024
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• 2018

Background and Objectives: Intense exercise (IE) induced myocardial fibrosis (MF) showed contradictory findings in human studies, making the relationship between IE and the development of MF unclear. This study aims to demonstrate exercise induced MF is associated with cardiac damage, and inflammation is essential to the development of exercise induced MF. Methods: Sprague-Dawley rats were submitted to daily 60-minutes treadmill exercise sessions at vigorous or moderate intensity, with 8-, 12-, and 16-week durations; time-matched sedentary rats served as controls. Enzyme-linked immunosorbent assay (ELISA) was used to measure serum cardiac troponin I (cTnI) concentration. After completion of the exercise protocol rats were euthanized. Biventricular morphology, ultrastructure, and collagen deposition were then examined. Protein expression of interleukin $(IL)-1{\beta}$ and monocyte chemotactic protein (MCP)-1 was evaluated in both ventricles. Results: After IE, right but not left ventricle (LV) MF occurred. Serum cTnI levels increased and right ventricular damage was observed at the ultrastructure level in rats that were subjected to long-term IE. Leukocyte infiltration into the right ventricle (RV) rather than LV was observed after long-term IE. Long-term IE also increased protein expression of proinflammation factors including $IL-1{\beta}$ and MCP-1 in the RV. Conclusions: Right ventricular damage induced by long-term IE is pathological and the following inflammatory response is essential to the development of exercise induced MF.

• Journal of Acupuncture Research
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• v.23 no.5
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• pp.79-92
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• 2006

Acupuncture has acupoints to treat, prevent, and reduce disease and to recover health by meridian guidance and reflexion. In the oriental medicine, meridian and acupoints are the foundations of treatment. Therefore, in the clinical treatment, we have to decide the therapeutic methods, meridian, acupoints, acupoint place, and acupoint match according to the disease. This study was designed to investigate the combined effects of ST36, ST37, and ST39 using electroacupuncture in rats. The present study was conducted to see the effects produced by combined electro-acupuncture(EA) at ST36, ST37, and ST39 on small intestine transportation in rats. EA(2 Hz, 5mA, pulse duration 1 ms) was applied for 30 minutes at acupoints of ST36, ST37, and ST39. The results are as follows. Compared to other acupoint place matches, ST36(left)+ ST37(right), ST36(left)+ST39(right), and ST37(left)+ST39 (right) were more effective than ST36(right)+ST37(left), ST36 (right)+ST39(left), and ST37(right)+ST39(left) for small intestine transporation(+ means acupoint place match). In terms of acupoint placement, ST36(left), ST37(right), and ST39(right) were more effective than the other sides for small intestine transporation. The data suggests that we have to consider acupoint place and acupoint match for acupucture therapy.

• Journal of Environmental Health Sciences
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• v.16 no.2
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• pp.83-87
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• 1990

This study was carried out to investigate the pollution of heavy metals in soil of seven stations from the upper spot (Yeungchun Dam) of Kumho River to the downstream(Gangchang Bridge). The results obtained were as follows: 1. The content of heavy metals in soil of Kumho River basin was highest at Gangchang Bridge [expresed in $\mu$g/g : Mn(246.0), Cd(1.90), Fe(551.2), Cu(108.2), Zn(86.4), Cr(80.2), respectively]. Whereas, the content of heavy metals expect for Mn, Cu was lowest at Yeungchun Dam [Cd(0.40), Fe(548.0), Zn(30.7), Cr(6.2), respectively] Also, the content of Cr, Zn was increased when the sampling areas are changed from upstream to downstream except for Hayang Bridge, and Hayang Bridge was the diverging point of the heavy metals content. 2. There were relatively correlated between Mn : FE, Cu, Zn, Cr, Fe : Cu, Zn, Cr(0.40 < $\left$\mid${r}\right$\mid$$ < 0.70), and were high correlated between Cd : Mn, Fe, Cu, Zn, Cu : Zn, Zn : Cr(0.70 < $\left$\mid${r}\right$\mid$$ < 0.90). Particularly, there was higest correlated between Cd : Cr, Cu : Cr(0.90< $\left$\mid${r}\right$\mid$$ < 1.0)

• Journal of Korean Clinical Health Science
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• v.11 no.1
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• pp.1632-1638
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• 2023

Purpose: The aim of this study was to determine the distribution of the cornea thickness and intra ocular pressure Korean adult of 20 to 24 year old using the Pentacam and tonometer. Methods: The subjects of this study were 43 Korean adults with healthy eyes. Corneal thickness was measured with Pentacam device. The intra ocular pressure was measured with tonometer. Data was analyzed by means of the Pearson's correlation cofficient. P-values<0.001 were considered statistically significant. Results: Mean age of subjects was 20.41±0.86 years. The mean +/- intra ocular pressure of the right eye and left eye were 16.236±2.523mmHg and 16.971±1.992mmHg, respectively. The mean central corneal thickness of the right eye and left eye was 545.324±38.682㎛ and 547.442±33.778㎛, respectively. No significant difference in central corneal thickness was found between the right and left eyes. But, there was a statistically significant difference between central cornea thickness and peripheral cornea thickness around 4 mm of central cornea(p<0.001, Pearson's correlation). However there was no statistically significant difference between central cornea thickness and intra ocular pressure. Conclusion: The results of this study could be used as a clinical reference data for diagnosis and treatment of cornea in Korean adult.

• International journal of advanced smart convergence
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• v.12 no.4
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• pp.426-433
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• 2023

The purpose of this study was to investigate the muscle activity of the lower extremity during driver swing in three-foot positions (Feet Open Stance, Feet Straight Stance, Lead Foot Open Stance). The electromyograms of gastrocnemius, tibialis anterior, and vastus lateralis during swing were measured and analyzed in three sections (take away - back swing, back swing - down swing, and down swing - follow swing). There was no significant difference in muscle activity according to foot position. Muscle activity according to phase was significantly higher in right gastrocnemius and tibialis anterior, and the left and right vastus lateralis in down swing - follow swing. In conclusion, the difference in muscle activity according to foot position is insignificant, and it is considered that the muscle activity to maintain the balance of the body increases toward the end of swing.