• International journal of advanced smart convergence
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• v.13 no.1
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• pp.185-193
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• 2024

This study aimed to investigate the immediate physiological responses, including heart rate, blood pressure, and rate pressure product (RPP), following squat exercises performed at three water depths (ground, knee depth, waist depth) and two speed conditions (60bpm speed, Max speed). The participants consisted of 10 men in their 20s with over 6 months of resistance exercise experience. For the 60bpm speed squats, participants performed 30 repetitions in 1 minute at a rate of 2 seconds per repetition, while for Max speed squats, they performed at Max speed without a set limit on the number of repetitions for 1 minute. All experiments were conducted with a random assignment. The study results showed that immediately after the aquatic squat exercise, the average heart rate, blood pressure, and cardiac load were higher in the order of knee depth, ground level, and waist depth at both 60bpm speed and Max Speed. At 60bpm speed, the heart rate was higher in the order of ground level, knee depth, and waist depth. Overall, exercise in an aquatic environment was considered to impose relatively lower physical burden compared to land-based exercise. Therefore, it is suggested that depending on individual fitness levels and exercise goals, appropriately combining aquatic exercise, which imposes lower immediate physiological burden, and land-based exercise may lead to safer and more effective exercise methods.

• Journal of Nutrition and Health
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• v.20 no.5
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• pp.309-317
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• 1987

The Purpose of this study was to investigate physical conditions and related factors of 5th grade, in Korea. The number of students surveyed was 10.751 . School health records of 63 grade schools were used. The school health record of 5th grade contains results of physical examination from 1st grade to 5th grade and results of physical fitness assessment for 5th grade. A questionnaire was also administered to the student. 1) The proportion of mother who has a job was 29% of students surveyed. Since some of mothers were working at odd hour, it is hard to take care of student's meal and nutritional intake. The proportion of students who didn't eat breakfast everyday was 5.8% . Students who took medicine for health were 26% of total students surveyed. 2) Male students were taller than female students until 4 th grade. At 5 th grade, the mean height was 137.1cm for male students and 137.6cm for female students . At 5 th grade, the mean weight was 31.5kg for male students and 31.2kg for female students. The 10, 25, 50, 75.90 percentile of the total distribution was examined . By rising in grade, the height velocity was decreased for male student and increased for female students . The weight velocity was increased sharply for male and female students and the increasing velocity was larger in female than male students. Using heights and weights from 1st grade, BMI, RI, and RW were calculated. 3) The proportion of students who drank milk everyday was 49%, The \intake frequency of cookies, eggs, ice cream, chocolate were higher than the intake freguency of cheese, ham and soy bean milk

• The Journal of Korean Society for School & Community Health Education
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• v.2 no.2
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• pp.57-78
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• 2001

The purpose of this study is to analyze hygiene education contents of elementary schools in Korea, USA, Japan and compare this and to provide with basic material present improvement method when hygiene education contents of elementary schools in Korea are organized. For this purpose the problems as following are selected centering on the hygiene education contents of the 7th education process in Korea and Japan and the hygiene text of public school in California, USA. First, this study tries to analyze the composition classified by 12 guidance contents each grade of hygiene education contents of elementary schools in Korea, USA, and Japan. Second, this study tries to analyze the composition classified by fields(physical, mental, social) of hygiene education contents of elementary schools in Korea, USA, and japan. As a result of the analysis and comparison on the matters stated above, the conclusion as following was gotten. First, as a result of searching the hygiene education contents system of elementary schools in Korea, USA, and Japan classified by 12 guidance contents each grade, the subjects which have good contents composition classified by class step by step were safe life and disease prevention. And the subjects such as growth development and health, physical fitness, drug use and health were weak and the parts such as consumer health and the careers concerned with are not dealt in the present education process of Korea at all. Second, as a result of analyzing the composition classified by fields of hygiene education contents of elementary schools in Korea, USA, Japan, all the three countries put great on physical part. And there are 57 units about mental part in USA, 27 units in Japan, only 17 units in Korea. And this fact reveals that there was lack of understanding about the need of mental part in Korea. This study tries to suggest improvement method as following through the study results stated above. First, as it is grasped in the analysis classified by guidance part of hygiene education contents, community and environment preservation, physical aptitude and stress management are to be emphasized more strongly and about the parts like consumer health and the persons concerned with hygiene new education programs as contents satisfying the need of age are to be inserted or complemented Second, because the hygiene education contents in Korea are still lack in comparing contents of mental parts compared with those of the two countries, the contents proper to the level and the requirement of learners to each grade are to be developed and complemented. Third, hygiene education units which were reduced in the 7th curriculum in Korea are lack compared with those in the two countries. Therefore, it is necessary that teachers should recognize the need of hygiene education so that the hygiene education can be separated and be taught out regularly.

• Journal of the Korean Institute of Navigation
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• v.25 no.4
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• pp.347-360
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• 2001

The purpose of this study is to find out the subjective and objective fatigue level and the characteristics of seamen's physical strength with the service period on board, to have a new understanding of the vocation, and to explore a physical exercising program for the seamen. The questionnaire survey for the seamen who had been in service on the ocean going vessels was conducted and the results are fumed out as the followings. Total number of seamen who had answered the questionnaire was 64 persons and the distribution status of service period group was identified as 16 persons for each of 4 groups； the group was classified as the group of less than 5 years, 5 - 10 years, 10 - 15 years, and more than 15 years. 1. Working conditions Working hours in a week was identified as 44－56 hours(45.3%) and the number of 45.3% of the seamen answered the working hours in week is more than 56 hours. The seamen of 25.0% are unsatisfied or very unsatisfied with their vocation. The seamen of 65.6% are smoking, and 45.3% of them drink. The seamen of 44.,3% drink once or more in a week. And the seamen of 67.2% do not take any exercise in a week. 2. Contribution to the seamen's fatigue and subjective symptom The most contributive factor to the seamen's fatigue was identified as the short of sleeping(21.5%), overwork(19.2%), poor working conditions (18.6%), and the friction in human relations also becomes one the contribution to the fatigue(14.0%). The subjective symptom by fatigue was identified as the feeling of languid, sleepy and tiredness of eyes. 3. Characteristics of the seamen's physical strength and Interrelations The grip strength and back strength of the seamen whose service period is less than 5 years were measured as 40.44kg and 127.8kg. The sit ups in the group of service period less than 5 years was measured as 36.84 times, and the vertical jump for the seamen in this group was measured as 46.55cm. The closed-eyes foot balance was measured as 33.64 seconds in the group of service period between 5 and 10 years, and side-step was measured as 35.31 times in the group of service period less than 5 years. The standing trunk flexion was measured as 10.54cm for the seamen whose service period is between 10-15 years, and the trunk extension was measured as 50.70cm for the seamen whose service period is less than 5 years. And the step test of the seamen whose service period is between 10-15 years was measured as 54.44 numbers, and the number of flickers of the seamen whose service period is less than 5 years was measured as 32.94.

• Journal of Life Science
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• v.21 no.6
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• pp.838-844
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• 2011

The purpose of this study was to investigate gender-specific changes of plasma MDA, SOD, and lymphocyte DNA damage during high intensity exercise. In this study, 17 healthy male and 18 healthy female college students ran on a treadmill at 85%$VO_{2max}$ until the point of all-out. Blood-collecting was carried out five times (Rest, Ex-Exha, R0.5h, R4h and R24h), and with the collected blood, plasma malondialdehyde (MDA), superoxide dismutase (SOD), and lymphocyte DNA damage were analyzed. Plasma MDA and SOD concentration increased significantly at the Ex-Exha (p<0.05), and there were no significant differences in gender. For the degree of lymphocyte DNA damage, all %DNA in the tail, tail length and tail moment increased significantly at the Ex-Exha (p<0.05), and %DNA in the tail and tail length were significantly higher in the male group than in the female group (p<0.05). These results suggest that acute high intensity exercise not only causes oxidative stress but also brings about lymphocyte DNA damage. In addition, it was found that males showed higher DNA damage than females in terms of oxidative stress subject to high intensity exercise. Nevertheless, further subsequent studies are required in order to better understand the mechanism behind DNA damage varying with gender, in a way that takes into consideration physical fitness, hormonal level, exercise intensity and duration - additional factors which might affect DNA damage.

• Journal of Life Science
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• v.16 no.5
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• pp.850-855
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• 2006

The purpose of this study was to develop a exercise program adapted from pelvic muscle exercise, and to analyze the effect of the exercise program on the physical fitness and the physiological parameters including bone density total estrogen and progesterone. The exercise program was composed of warming-up(10 min), main exercise(40 min) and warming-down(10 min). The 20 middle-aged women between 40 and 60 years old were divided into four group; the control group(6 women), the exercise group (7 women), and exercise group with soybean milk supplement(7 women). The exercise group with soybean milk group was applied three times a week and two packs of the soybean milk per day were given. The result of this study were as follows. In the percent fat change of within group, the exercise group showed significant decreased before than after the exercise. In the change of between group, the control group showed significant decreased than the exercise group with soybean milk group. In the body composition change of between group, the exercise group with soybean milk group showed significant decreased in body mass index than the control group. In the total estrogen change of within group, the pelvic muscle exercise with soybean milk group showed the decreased before than after the exercise.

• Korean Journal of Health Education and Promotion
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• v.21 no.4
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• pp.35-49
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• 2004

The purpose of this study was to analyze variables associated with smoking and selected health behaviors. This study targeted adult men and women over 20 of age. The sample population was drawn from the national sample, and the samples were chosen from the telephone book. A total of 1,500 cases were collected through a telephone based interview survey. As a tool for this study, a structured questionnaire was developed. the variables included self-perceived health status, and selected 7 health behaviors; smoking behavior, physical activities, eating habit, weight control, alcohol consumption, stress management, and cancer exam. The healthy life practice actions of Trans-theoretical model have been classified into five stages. Smokers were more likely than non-smokers to positive attitudes toward smoking and the impact of smoking in this study. This means that smokers's awareness toward the impact of smoking is very week. Smoking behavior was significantly related to other health related behaviors based on the correlation analysis. However, gender, engaging in regular physical activities, moderate consumption of alcoholic beverages, and receiving a cancer examination were the variables that can explain and predict a person's stages of adopting a non-smoking behavior. Self perceived health status was closely related to other health behaviors. Gender, age, and monthly household income were important demographic variables that have significant relationship with the self-perceived health status. Among the health behaviors, regular physical activities and weight control were significant predictable variables. Similar results have been found in the National health and Nutrition examination survey in Korea. As a result of this study, it was found that among the selected health behaviors, engaging in physical activity was an important variable to increase positive sense of health and non-smoking behaviors. Educational and policy level input is needed to increase awareness and provide chances to participate in fitness activities. To those who maintain exercise, the environmental support and diffusion of knowledge information and education data should be strengthened. To change attitudes toward smoking, more in-dept awareness campaign and education should be provided according to people's different behavioral status. In addition, not only diffusing health education data and delivering knowledge information through related programs, but also environmental support system that helps an individual maintain his/her action is required. Such a support system means settlement of the health enhancement base of school, workplace and community should be carried out, and the policy level support and regular programs should be provided and spread to the unit of community.

• Culinary science and hospitality research
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• v.16 no.4
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• pp.190-205
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• 2010

The purpose of this study is to understand the effect of physical environment of family restaurant upon customers' emotions, satisfaction and revisit intent. Based on total 438 samples obtained from the empirical research, this study reviewed the reliability and fitness of the research model using Amos program. The hypothesized relationships in the model were tested simultaneously by using a structural equation model (SEM). The proposed model provided an adequate fit to the data, $x^2$ 592.898(p<0.001), df=239, CMIN/DF 2.481, RMR 0.103, GFI 0.900, NFI 0.952, CFI 0.970, RMSEA 0.058. SEM resulted that the physical environment showed a significant effect on customers' positive emotions($\beta$=0.388, p<0.001) and negative emotions($\beta$=-0.148, p<0.001). Also, customers' positive emotion($\beta$=0.828, p<0.001) bad a positive significant effect on customer satisfaction, and customer satisfaction($\beta$=0.771, p<0.001) bad a positive significant effect on revisit intent. Limitations and future research directions are also discussed.

• 한국체육학회지인문사회과학편
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• v.55 no.5
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• pp.249-262
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• 2016

The policy regarding school sport club participation that was implemented in 2007 to mitigate reductions in fitness has been reported to be satisfactory at improving the physical, mental, and social health of elementary, middle, and high school students by the students as well as by their teachers and parents. The purpose of this systematic review is to investigate the association between participation in school sport club and character-building among adolescents in Korea, and to provide evidence to inform physical education policies in the future. Using "School Sport Club" as the key word, the Korean electronic databases were searched, and this systematic review included a total of 13 articles. School sport club participation among school students is closely correlated to character-building, prevention of school violence, attitude towards life and attitude toward education. The findings of this study support the Ministry of Education's new policy (2015) to extend and expand school sport club participation and highlights the importance of physical activity.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.467-472
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• 2024

This paper examines the history of karate, its utilization as military training, and its value as a national defense sport. Originating from Okinawa, karate was introduced into Japanese military training in the modern era and spread worldwide. During World War II, the Japanese military intensified karate training for close-quarters combat. Post-war, karate was introduced to Western society through the U.S. military presence in Japan. In contemporary militaries, various martial arts, including karate, are utilized in training programs such as the U.S. Marine Corps Martial Arts Program (MCMAP) and the Israeli military's Krav Maga. These programs integrate techniques from karate, judo, boxing, and other martial arts to create systems optimized for real combat. In military education, karate enhances individual physical and mental capabilities and improves unit combat effectiveness. Rigorous training develops physical fitness, mental resilience, and practical skills for close-quarters combat. Group training fosters camaraderie and unit cohesion. However, due to the changing nature of modern warfare, it is necessary to reconsider the proportion and methods of martial arts training in military education. With the advancement of high-tech weaponry, team operations have become more critical than individual combat skills. Rather than applying traditional karate techniques unchanged, it is essential to modify and develop them to suit modern warfare. Nevertheless, the value of martial arts training, including karate, remains significant in cultivating key soldier qualities such as physical strength, indomitable spirit, and camaraderie. It is anticipated that militaries worldwide will continue to evolve their martial arts training systems in line with changing times.