• Journal of Practical Engineering Education
• /
• v.12 no.2
• /
• pp.309-319
• /
• 2020

Billiards is a fun and popular sport, but both route planning and cueing prevent beginners from becoming skillful. A beginner in billiards requires constant concentration and training to reach the right level, but without the right motivating factor, it is easy to lose interests. This study aims to induce interest in billiards and accelerate learning by utilizing billiard path prediction and visualization on a highly immersive augmented reality platform that combines a stereo camera and a VR headset. For implementation, the placement of billiard balls is recognized through the OpenCV image processing program, and physics simulation, path search, and visualization are performed in Unity Engine. As a result, accurate path prediction can be achieved. This made it possible for beginners to reduce the psychological burden of planning the path, focus only on accurate cueing, and gradually increase their billiard proficiency by getting used to the path suggested by the algorithm for a long time. We confirm that the proposed AR billiards is remarkably effective as a learning assistant tool.

• Journal of the Korean Applied Science and Technology
• /
• v.37 no.6
• /
• pp.1669-1677
• /
• 2020

The purpose of this study was to evaluate the effects of a 14-week proprioceptive resistance exercise on muscle endurance strength, dynamic balance and gait ability of elderly women in a social welfare facility. Thirty community dwelling elderly subjects (mean age 70.84±3.33) divided into experimental (n=15) and control (n=15) groups. The participants performed the muscle endurance strength(30sec hair stand), dynamic balance (3m up and go) and low extremity performance (10m walking, 400m walking) pre and after the training program. The exercise groups were submitted to 14 weeks proprioceptive training with a Swiss ball three times a week. As a results were as follow. Significantly improvements were observed in low extremity strength and dynamic balance. And there have significantly improvements in 10m walking, 400m walking. Conclusionly, the improvement of dynamic balance and gait ability by proprioceptive resistance training will reduce the possibility in female elderly people.

• Journal of the Korea Society of Computer and Information
• /
• v.27 no.4
• /
• pp.153-160
• /
• 2022

In this paper, we propose the relationship between self-determination, home training satisfaction, and reuse of police-related students who participate in home training and train their physical strength. The subjects of this study were students enrolled in the Department of Police Administration and Police Martial Arts at D, S, and K universities in Busan and Gyeongnam area. Among them, 349 students who had participated in home training were surveyed. As a result of verifying the relationship between self-determination, exercise satisfaction, and reuse factors using the collected data, SPSSWIN VER 25+, AMOS 20.0 program, First, autonomy, competence, and relationship, which are sub-factors of self-determination of home training participants, had a positive effect on home training satisfaction. Second, exercise satisfaction of home training participants had a positive effect on home training reuse. Based on the research results,It is essential to identify and manage what home training participants demand. It is believed that this can be a positive process for the development of home training.

• Journal of Convergence for Information Technology
• /
• v.12 no.4
• /
• pp.133-142
• /
• 2022

The purpose of this study was to verify the moderating effect of the challenging spirit on the relationship between fun factors and re-participation intentions of participants in traditional play. The subjects of this study were 164 participants in the traditional play Hanmadang contest held in Jeju Special Self-Governing Province in 2021. They measured fun factors, challenging spirit, and re-particitation intention to participate. In order to analyze the collected measurement paper, the analysis was performed using SPSS18.0, PROCESS Macro(V.2.13), Interaction program. The major results were as follows. First, the interaction between promote health and challenge spirit was found to have a significant effect on re-particitation intention at high and medium levels. Second, it was found that the interaction between the foster of social and the challenge spirit did not have a significant effect on the re-particitation intention. Third, the interaction between sense of achievement and the challenge spirit was found to have a significant effect on the re-particitation intention at the high and medium levels.

• 한국체육학회지인문사회과학편
• /
• v.58 no.3
• /
• pp.123-141
• /
• 2019

The purpose of this study is to explore the ways of savoring of physical activities in middle-aged women based on the savoring theory of positive psychology. The first step was to understand the background of exercise participation experience and to provide basic information about savoring method. In the second stage, we used the open questionnaire to collect the savoring methods used during the exercise, and then, in-depth interviews were used to specify the savoring method. Open questionnaires were categorized according to the similarity of content and then nominated based on the savoring method. In-depth interviews were conducted to explore the cases of each method in detail. As a result, middle-aged women were found to use the savoring methods such as sharing with others, celebrating, comparing, feeling fine, blessing, expressing with behavior in physical activity. Through in-depth interviews, each case of savoring was embodied based on the savoring theory of positive psychology. Based on the results of the study, the possibility of applying the savoring method in the field of exercise instruction of middle-aged women and possibility of developing the savoring related program were discussed.

• The Korean Journal of Physiology and Pharmacology
• /
• v.28 no.4
• /
• pp.295-302
• /
• 2024

Walking can have a positive impact on cognitive function in adolescents. This study aimed to compare the effects of walking with sneakers and barefoot on cognitive ability in adolescents. Fifty-nine adolescent male students were included in the study and assigned to the control (n = 20), sneaker (n = 19), and barefoot (n = 20) groups. The barefoot and sneakers group performed a 40-min walking exercise four times a week for 12 weeks during the morning physical activity time, while the control group performed self-study. Electroencephalogram (EEG) and brain activity variables were measured before and after the exercise program. The results showed that after 12 weeks, the barefoot group had a significant decrease in Gamma and H-beta waves and a significant increase in sensorimotor rhythm (SMR) and Alpha waves. Conversely, the control group showed a significant decrease in SMR waves and increase in Theta waves. The sneaker group showed a significant decrease in SMR waves alone. In an eyes-open resting state, the barefoot group showed a significant increase in H-beta, M-beta, SMR, and Alpha waves. The barefoot group also had a significant increase in cognitive speed and concentration and a significant decrease in brain stress. Taken together, barefoot walking can effectively enhance cognitive ability in adolescents, as demonstrated by the significant variation in EEG activity. This research highlights the potential benefits of barefoot walking as a simple and effective form of exercise for enhancing cognitive function in adolescents.

• Korean Journal of Applied Biomechanics
• /
• v.12 no.2
• /
• pp.159-177
• /
• 2002

The purpose of this study was to investigate the relations between the segments of the body, the three dimensional anatomical angle and the angular velocity of the air born phase and understand the control mechanism of the high-bar movement, the somersault, the double somersault, the double somersault with full twist. For this study seven well trained university gymnastic volunteered, Zatsiorky and Seluyanov(1983, 1985)'s sixteen segment system anatomical model was used for this study. For the movement analysis three dimensional cinematographical method(Arial Performance Analysis System : APAS) was used and for the calculation of the kinematic variables a self developed program was used with the LabVIEW 5.1 graphical profromming(Johnson, 1999) program. By using Eular's equations the three dimensional anatomical Cardan angles of the joint and angular velocity were defined. As a result of this study 1. As the rotation of the body increased in the air born phase the projection angle of the CM of the total increased, this resulted the increased of the max hight of the CM. 2. In three dimensional angular velocity the Z axis(vertical direction) projection angular velocity increased as the rotation of the body increased in the airborn phase, but the Y axis and the X axis projection angular velocity did not show significant differences. 3. As the rotation of the body increased in the air born phase the angular movement of the shoulder and the hip showed significant change. These movement act as the starter in the preparation phase. 4. The somersault angle, the twist angle, the tilt angle of the upper body related to the global reference frame in the releas phase the average somersault angle of the three types of high-bar movement was $57.7^{\circ}$, $38.8^{\circ}$, $39.7^{\circ}$, the average tilt angle was $-1.5^{\circ}$, $-5.4^{\circ}$, $-8.4^{\circ}$, the average twist angle was $13.4^{\circ}$, $10.6^{\circ}$, $23.3^{\circ}$. This result showed that the somersault with full twist had the largest movement.

• Journal of Korea Entertainment Industry Association
• /
• v.13 no.7
• /
• pp.361-373
• /
• 2019

Falls are a threat to the physical health of the elderly as well as to their overall quality of life. The purpose of this study was to identify which type of exercise is effective for improving the balance of the elderly, and to obtain the basic data for developing the falls prevention exercise intervention program for the elderly. We compared to the differential effects between rhythmic step exercise and core muscle strengthening exercise in terms of functional balance test and self-reported balance test. Women older than 65 years and under 80 years of age were assigned to one of the step exercise group(21), core muscle exercise group(20), and control group(21), and for 8 weeks, twice per week, 20-30 minutes of exercise were treated. All participants performed one foot static balance test with open and closed eyes. And they responded to self-reported balance test, such as Fall Efficacy Scale(FES) and Activities-specific Balance Confidence(ABC) Scale. The results of statistical analysis are summarized as follows. First, rhythmic stepping exercise was more effective in improving functional balance than core muscle strengthening exercise. In particular, the effect of step exercise was obvious in the one-foot static balance test with open eyes. Second, the self-reported balance test showed better step exercise than core muscle exercise. Specifically, rhythmic step exercise was more effective in enhancing fall efficacy than core muscle exercise. In conclusion, the rhythmic step exercise was more effective in improving the balance ability of the elderly than the core muscle exercise. The rhythmic step exercise is more related to the lower extremity muscles, and especially since the rhythmic step exercise is performed in various ground changes, it seems to have a high similarity to the fall occurrence situation. For future research, we recommended the development of task-oriented ankle proprioceptive exercise intervention program and exercise equipment based on the specific motion situation in which the fall accident occurs in the elderly.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.11
• /
• pp.795-803
• /
• 2020

The purpose of this study is to verify the differences in learning capability according to the demand of learning programs. The participants of this study included 1,738 S University students. The results of the study are as follows. First, in learning capability according to participation in learning programs, we found statistically significant differences in the ability to organize information, resource utilization, self-awareness, self-improvement and sociality. Second, there were no statistically significant differences in the ability to organize information, resource utilization, self-awareness, self-improvement and sociality in participating in learning programs. Third, there were statistically significant differences in the ability to organize information, resource utilization, self-awareness, self-improvement and sociality in not participating in learning programs. Fourth, there were statistically significant differences in the ability to organize information, resource utilization, self-awareness, self-improvement and sociality in experiencing difficulties in learning. Fifth, learning capabilities in specific areas that students wanted to improve had no statistically significant differences in the ability to organize information, resource utilization, self-awareness. However, there were statistically significant differences in self-improvement and sociality.

• Journal of Life Science
• /
• v.17 no.4 s.84
• /
• pp.503-509
• /
• 2007

The purpose of this study was to investigate the effect of Gi exercises and soybean milk supplement on the body composition and the physiological parameters including blood level of lipids and related hormones in middle-aged women. The Gi exercise program was composed of warming-up(10 min), main exercise(40 min) and cooling-down(10 min). The 40 middle-aged women between 40 and 60 years old were divided into four groups; the control group(12 women), the Gi exercise group(14 women), the soybean milk supplement group(11 women), and the Gi exercise group with soybean milk supplement(14 women). The Gi exercise program was applied three times a week and two packs of the soybean milk per day were given. The result of this study was as follows 1. The control group showed the increase of body weight, percent body fat, and fat mass than other groups. 2. The blood level of T-C was increased in the control group and the Gi exercise group and exercise with supplemented group were decreased 3. The blood level of HDL-C was significantly decreased in the control group than other groups. 4. The blood level of LDL-C was significantly increased in the control group than other groups. 5. The level of TG were not significantly changed in all groups 6. The follicular stimulating hormone (FSH) and luteinizing hormone (LH) hormone levels were not significantly changed in all study groups