• Journal of the Korean Society of School Health
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• v.12 no.2
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• pp.217-230
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• 1999

The purpose of this study is to find out problems in obesity management through survey and analysis of the actual conditions from the view of a elementary schools school-nurses and to establish fundamental data for efficient obesity management. The subjects for this study were 313 numbers of elementary school-nurses in Kyung-Sang-Pook-Do. The data were collected through mail questionaries from November 1 to November 30, 1997. The major findings in this survey were as follows: 49.8% of the school-nurses who responded in the survey were in their 30s. The average career was 7.3years. The average service duration in their present school was 2.3 years, 55.6% of them were serving at schools which have less than ten classes total 77.2% of them were serving rural areas, 79.6% of them were serving at schools with fewer than 100 obese students. The total obesity prevalence rate was 11.4%, 13.3% were girls, 9.3% were boys. The measurement of height and weight is performed once a year for all surveyed students (91.7%), but obese students were measured as much five times (51.1%). The rate of obesity management planning was 74.1%, however the rates of evaluation and role assignment were 41. 2%, and 24.3%. 79.6% of the surveyed schools have health education classes for obesity, the rate compared (8.0 periods per year) to the whole of health education (79.1 periods per year) is 10.1%. 99.9% of the schools had counseling rooms for obesity (combined with nursing rooms) but they were used. The roote of individual counseling was 84.3%. The frequency counseling was six times a year for about 15 minutes. Obesity counseling records were kept 93.6% of the time and individual information cards were kept 98.7% of the time. The frequency of parents counseling was 42.8% and the survey shows that the main problem here was insufficient counseling facilities. The frequency of dietary guidance and exercise therapy was 84.3% and the dietary instructor was usually the school nurse at 51.7%. The frequency of obesity student exercise was 1-2 times a week and more-than-10-minutes at a time. They skip rope during the morning self-study class. The number on problem of exercise guidance at 56.2% was students' non-cooperativeness. School-nurses, 87.9%, answered that obesity management at school is necessary and 86.9% mentioned the shortage of obesity related information in present physical exercise books. From the plural responses of executing the obesity management, there are many similar problems: lack of knowledge and non-cooperation in parents at 41.9%, is predominant followed by of knowledge and non-cooperation in the children. The third problem is the lack of funds and facilities.

• Journal of Korean Public Health Nursing
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• v.14 no.2
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• pp.415-430
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• 2000

From March 10 to April 3, 1999. questionnaires were sent to 157 students at an university located in Hongsong. South Choongchung Province in order to find out their eating habits and exercise patterns. The analysis of the questionnaires collected reveals the followings. 1. Eating Habits 1) 76 out of total 157 respondents (48.4%) said that they skipped breakfast. The significant difference was shown in the frequency of breakfast eating based on respondents' sex. Male students had higher rate of going without breakfast (73.92%) than their female counterparts (28.41%). 2) Most respondents finished eating their meals within 20 minutes. with 58.5% spending 10 to 20 minutes. followed by 28.0% taking less than 10 minutes. 3) With respect to the frequency of eating snacks. 1 to 2 times per day came on top with 63.7%. Significant difference was shown based on sex. with male students having more frequent snacks than female students. 40.1% of those surveyed said they ate snacks because they were either bored or hungry, respectively, 67.5% took snacks after school followed by 23.6% who had snacks after dinner. 4) Concerning the frequency of taking food. 1 to 2 times per week recorded the highest mark for beta-carotine. fruits. fish. beans. milk. seaweeds and fries. As for vegetables. 6 to 7 times a week received the highest points. Males showed significantly higher frequency of taking fruits than females. while the opposite was true for beans. 5) More than 50% of the respondents chose rice and fruits as the food they could eat really well. All those surveyed ate fruits and vegetables. More than 10% of students said they did not eat donut. chocolate. candies. fries. coke and clear carbonated beverage. milk. ham and sausage. The food that revealed significant difference based on sex included ramyon, coke and clear carbonated beverages, ham and sausage, yogurt and milk, with males showing greater preference than their female counterparts. 6) The most preferred by respondents was spicy taste (49.04%), followed by sour (36.31%), sweet (25.48%), and salty tastes(21.1%). Those surveyed shunned sweet taste the most (21.02%), followed by sour (14.65%), spicy (8.92%), salty (5.10%) tastes. 2. Workout Patterns 1) 14.01% of the respondents said they took exercise. Based on sex, males showed significantly higher rate of 21.74% than 7.95% of females. Those who took exercise did so mostly three times a week. With regard to the time spent on workout. 'within 2 hours' received the highest points. Soccer was found to be the most popular sport among the respondents. The above analysis demonstrated that the students surveyed selected relatively sound answers in the categories of the food preference and taste. However. some skipped breakfast and liked eating snacks. and most did not take exercise, which may raise health problems including the weight increase. Therefore, ways should be devised to tackle such problems to ensure healthy lives.

• Journal of Preventive Medicine and Public Health
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• v.38 no.3
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• pp.291-297
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• 2005

Objectives : The effects of exercise on bone density have been found to be inconsistent in previous studies. We conducted a cross-sectional study in premenarcheal girls to test two hypotheses to explain these inconsistencies. Firstly,'the intensity of mechanical strain, in terms of the ground reaction force(GRF), has more important effects on the bone mass at a weight-bearing site', and secondly, 'calcium intake modifies the bone response to exercise'. Methods : The areal bone mineral density was measured at the Os calcis, using peripheral dual energy X-ray absorptiometry, in 91 premenarcheal girls aged between 9 and 12 years. The intensity of mechanical strain of exercise was assessed by a self-report questionnaire and scored by the GRF as multiples of body weight, irrespective of the frequency and duration of exercise. The energy and calcium intake were calculated from the 24-hour dietary recall. An analysis of covariance(ANCOVA) was used to determine the interaction and main effects of exercise and calcium on the bone density, after adjusting for age, weight, height and energy intake. Results : The difference in the bone density between moderate and low impact exercise was more pronounced in the high than low calcium intake group. The bone density for moderate impact exercise and high calcium intake was significantly higher than that for low impact exercise (p=0.046) and low calcium intake, after adjusting for age, weight, height and energy intake. Conclusions : Our study suggests that the bone density at a weight-bearing site is positively related to the intensity of mechanical loading exercise, and the calcium intake may modify the bone response to exercise at the loaded site in premenarcheal girls.

• Journal of Life Science
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• v.26 no.1
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• pp.129-139
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• 2016

Exercise increases the expression and interaction of major neurotrophic factors such as brain-derived neurotrophic factor (BDNF), insulin-like growth factor-1 (IGF-1), and vascular endothelial growth factor (VEGF) at both central and peripheral tissues, which contributes to improved brain and neural plasticity and cognitive function. Previous findings have been to understand the effect of light or moderate intensity aerobic exercise on neurotrophic factors and cognitive function, not that of high intensity aerobic exercise. However, recent findings suggest that high intensity interval training is a safe, less time-consuming, efficient way to improve cardiorespiratory fitness and weight control, thus American College of Sport Medicine (ACSM)’s guidelines for exercise prescription for various adult populations also recommend the application of high intensity interval training to promote their overall health. High intensity interval training also enhances the expression of BDNF, IGF-1, and VEGF at the brain and peripheral tissues, which improves cognitive function. Increased frequency of intermittent hypoxia and increased usage of lactate as a supplementary metabolic resource at the brain and neural components are considered a putative physiological mechanism by which high intensity interval training improves neurotrophic factors and cognitive function. Therefore, future studies are required to understand how increased hypoxia and lactate usage leads to the improvement of neurotrophic factors and what the related biological mechanisms are. In addition, by comparing with the iso-caloric moderate continuous exercise, the superiority of high intensity interval training on the expression of neurotrophic factors and cognitive function should be demonstrated by associated future studies.

• Journal of Integrative Natural Science
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• v.3 no.3
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• pp.181-185
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• 2010

This study was conducted to find associations of obesity, exercise pattern and nutrient intakes in Korean American immigrants residing in North Western parts of USA. The structured survey forms and food frequency questionnaire that covered 67 food items were used. There was a significant difference in height for subjects by gender and age. However, the weight of females became heavier with increasing age in contrast to males. There was a great difference in BMI between the male and female group in the youngest adult group compared to the aging adults. Significant age difference in exercise pattern was shown. Dietary fiber and sodium intakes were higher in the elderly than young ones in female group. In the same young adult group Zn intakes was the highest in the male group and the lowest in the female group. Folate intakes were higher in females than in males. Strong positive correlations among height, weight and BMI were shown. Zn intake was significantly correlated with weight, height, and exercise pattern in the study. Furthermore, Zn was correlated with sodium, vitamin B6, folate, vitamin E and cholesterol.

• Journal of Korean Academy of Rural Health Nursing
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• v.9 no.1
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• pp.19-32
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• 2014

Purpose: The strudy was done to determine the effect of an exercise program using the muscle strengthening flowchart on flexibility and hand strength and depression of rural elderly women. Methods: For 11 months, from January 9, to November 29, 2013, a survey was done of 37 voluntary participants who were elderly women living in rural areas. This study was a one group pretest-posttest Quasi-experimental research design to identify the effectiveness of self-directed programs. The Korean version of the depression measurement tool (Jo and Kim, 1993) was used. The collected data were analyzed using frequency, descriptive statistics, and paired t-test with SPSS /PC 17.0 program. Results: Comparison of before and after the self-directed program showed that flexibility (p <.001), left grip strength (p <.001), and right grip strength (p <.001) were significantly increased. Depression (p <.001) was significantly reduced. Conclusion: The results of the study show that the exercise program using the muscle strengthening flowchart resulted in of significant muscle strengthening and reduction in depression in rural elderly women. Future use of the muscle strengthening flowchart is recommended to provide long-term operational exercise programs.

• Journal of Preventive Medicine and Public Health
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• v.43 no.4
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• pp.362-365
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• 2010

2010 is the year when the Korean baby boomer generation faces retirement. With the need for affective strategies to keep this population healthy, the government has placed much effort to increase the regular physical activity (PA) level of older adults. Yet the prevalence of active seniors is still relatively low. This paper reviews the recent government strategies and efforts to enhance the physical activity levels of older adults and the PA programs provided in the community settings by major organizations and institutions. In addition, the problems of the current approaches are shown, and based on a review, the author provides five suggestions for promoting the PA level of older adults as follows. First, specific physical activity goals and objectives for older adults should be included in the National Health Plan 2020. Second, the recommendations for PA for seniors, which include a proper intensity, duration and frequency of exercise, should be provided. Third, the role of organizations and institutions should be rearranged for the proper dissemination of government provided community-based exercise programs. Fourth, a standard quality-control system should be provided, and finally, an evidence-based exercise program, which should be specifically created for the older Korean population, should be developed. Physical activity offers opportunities for people to extend the years of their active independent life and reduce functional limitations. To maximize the effects of government efforts to promote PA for seniors, we feel the comments provided in this paper should be closely examined.

• Journal of Electrical Engineering and Technology
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• v.9 no.1
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• pp.334-343
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• 2014

In this paper, we suggest a method to improve the fusion of an accelerometer and gyro sensor by using a Kalman filter to produce a more high-quality respiration signal to supplement the weakness of using a single accelerometer. To evaluate our proposed algorithm's performance, we developed a chest belt-type module. We performed experiments consisting of aerobic exercise and muscular exercises with 10 subjects. We compared the derived respiration signal from the accelerometer with that from our algorithm using the standard respiration signal from the piezoelectric sensor in the time and frequency domains during the aerobic and muscular exercises. We also analyzed the time delay to verify the synchronization between the output and standard signals. We confirmed that our algorithm improved the respiratory rate's detection accuracy by 4.6% and 9.54% for the treadmill and leg press, respectively, which are dynamic. We also confirmed a small time delay of about 0.638 s on average. We determined that real-time monitoring of the respiration signal is possible. In conclusion, our suggested algorithm can acquire a more high-quality respiration signal in a dynamic exercise environment away from a limited static environment to provide safer and more effective exercises and improve exercise sustainability.

• Journal of The Korean Society of Integrative Medicine
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• v.5 no.3
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• pp.63-70
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• 2017

Purpose : The purpose of this study was to investigate the effects of the virtual reality exercise program on ankle balance with ankle taping or microwave. Methods : This study was performed on 18 subjects. Eighteen subjects were divided into two groups; conducted virtual reality exercises with taping (n=9), and performed virtual reality exercises after microwave application (n=9). Both groups performed the exercise three times a week for four weeks. The data was analyzed by the Wilcoxon signed-rank test for comparing before and after changes of factors in each group and performed the Mann-Whitney test for comparing groups. Result : Taping and microwave groups were increased dynamic balance after virtual reality exercises (p<.05). There was no significant difference in balance after applying taping and microwave for virtual reality exercises (p<.05). Conclusion : Reducing the frequency of recurrent ankle sprain in functional ankle subjects, it is recommended to perform virtual reality exercise after applying taping and microwave.

• Journal of Digital Convergence
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• v.13 no.2
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• pp.361-369
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• 2015

For the research object of this study 112 university shooting athletes, registered with Korea Shooting Federation in 2014, have been selected. Statistics processing was carried out through SPSS 16.0 and AMOS 7.0. The following results were obtained by analysis of frequency, exploratory factor analysis, confirmatory factor analysis, correlation analysis and structural equation model analysis to serve it's purpose. First, task orientation had passive influence on self-management. Second, task orientation and ego-orientation had passive influence on perceived exercise performance. Third, self-management had passive influence on perceived exercise performance.