• Korean Journal of Applied Biomechanics
• /
• v.18 no.2
• /
• pp.59-64
• /
• 2008

D. W. KANG, J. S. CHOI, and G. R. TACK, A Study on Real-Time Sports Activity Classification & Monitoring Using a Tri-axial Accelerometer. Korean Jouranl of Sport Biomechanics, Vol. 18, No. 2, pp. 59-64, 2008. This study was conducted to study the real-time sports activity classification and monitoring using single waist mounted tri-axial accelerometer. This monitoring system detects events of sports activities such as walking, running, cycling, transitions between movements, resting and emergency event of falls. Accelerometer module was developed small and easily attachable on waist using wireless communication system which does not constrain sports activities. The sensor signal was transferred to PC and each movement pattern was classified using the developed algorithm in real-time environment. To evaluate proposed algorithm, experiment was performed with several sports activities such as walking, running, cycling movement for 100sec each and falls, transition movements(sit to stand, lie to stand, stand to sit, lie to sit, stand to lie and sit to lie) for 20 times each with 5 healthy subjects. The results showed that successful detection rate of the system for all activities was 95.4%. In this study, through sports activity monitoring. it was possible to classify accurate sports activities and to notify emergency event such as falls. For further study, the accurate energy consumption algorithm for each sports activity is under development.

• Korean Journal of Applied Biomechanics
• /
• v.12 no.2
• /
• pp.361-380
• /
• 2002

The purposes of this study were to a analysis of friction relation between tennis outsole and tennis playing surfaces. Tennis footwear is an important component of tennis game equipment. It can support or damage players performance and comfort. Most importantly athletic shoes protect the foot preventing abrasions and injuries. Footwear stability in court sports like tennis is incredibly important since it is estimated that as many as 45% of all lower extremity injuries occur in the foot and ankle. The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. The friction force opposes the motion of the object. Friction results when two surfaces are pressed together closely, causing attractive intermolecular forces between the molecules of the two different surfaces. The outsole provides traction and reduces wear on the midsole. Today's outsoles address sport specific movements (running versus pivoting) and playing surface types. Different areas of the outsole are designed for the distinct frictional needs of specific movements. Traction created by the friction between the outsole and the surface allows the shoe to grip the surface. As surfaces, conditions and player motion change, traction may need to vary. An athletic shoe needs to grip well when running but not when pivoting. Laboratory tests have demonstrated force reductions compared to impact on concrete. There is a correlation between pain, injury and surface hardness. These are a variety of traction patterns on the soles of athletic shoes. Traction like any other shoe characteristic must be commensurate and balanced with the sport. The equal and opposite force does not necessarily travel back up your leg. The surface itself absorbs a portion of the force converting it to other forms of energy. Subsequently, tennis court surfaces are rated not only for pace but also for the percentage of force reduction.

• 한국체육학회지인문사회과학편
• /
• v.54 no.3
• /
• pp.439-452
• /
• 2015

The purpose of this study is to encourage continuous participation in sports and to provide basic data for the promotion of participation in leisure sports. To achieve the purpose, this study conducted factor scaling analysis on participation motives for leisure sports and subdivided them to analyze psychological reactions of participants. As for study methods, this study collected master and doctor's degree theses and academic journals on motives for sports participation that were conducted from 1997 to 2012 from Korean major search engines. On the search engines, a keyword 'motive' was searched first and then studies on participation motive for leisure sports were collected. Key words that appeared when searching 'motive' were combined with other key words and word spacing between them were checked before conducting a literature analysis. The study results showed that participation motives for leisure sports were divided into a participation motive, an internal motive, an external motive, a leisure motive and other motives. It was identified that there were 23 factors for the participation motive, 17 factors each for the internal motive and the external motive, 8 factors for the leisure motive and 57 factors for other motives. It was found out that 76 factors were used to study a participation motive for leisure sports, excluding the factors that have similar or overlapping meaning based on each factor.

• 한국항공운항학회:학술대회논문집
• /
• 2016.05a
• /
• pp.217-220
• /
• 2016

본 논문은 고공강하 훈련장치인 수직 풍동 장비의 현황 및 실내 스포츠로서의 활용방안에 대하여 논의하였다. 고공강하는 군의 특수낙하훈련이나 일반인의 스포츠 레저 활동으로 이루어지며. 극한의 스포츠를 즐기려는 사람들이 증가하하여 외국의 경우에는 활성화되어 있는 스포츠의 하나이다. 특히 북유럽 지역에서는 겨울에 실내 고공낙하를 위해서 사용할 수 있는 장비로서 수직 풍동이 사용된다. 수직풍동은 개방식과 폐쇄 회로형으로 개발되어 활용되고 있으며, 최근에는 놀이시설의 일환으로 회로형의 고가수직풍동이 많이 설치되는 추세에 있다. 수직풍동은 고공강하 체험 및 훈련을 위한 장비로서 미래에는 더욱 많이 이용되게 될 것으로 보인다. 극한 스포츠를 즐기려는 사람들이 증가하고 오락기구로서도 매력적인 장비이기 때문에 앞으로 국내에서도 이러한 시설의 설치 및 활용이 이루어질 것이다.

• Journal of Korea Game Society
• /
• v.19 no.1
• /
• pp.61-72
• /
• 2019

This study has meanings by adapting recreation specialized theory, focusing on outdoor recreation activities, on indoor recreation, e-sports. LoL is leading the e-sports fever now, and this study is targeting its spectators, reflecting and analyzing recent e-sports consumers' leisure feature statistically. For the further research, adapting a theory to various fields to generalize is required. Also, the researches on e-sports leisure need both quantitative and qualitative methods.

• 월간산업보건
• /
• s.267
• /
• pp.10-20
• /
• 2010

• The Journal of the Korea Contents Association
• /
• v.13 no.8
• /
• pp.386-395
• /
• 2013

This study examined social relation of cyber sports supporter's community and social capital as time passes. This study selected spectator sports supporters of cyber sports community based on number of number and history of cyber sports supporter. This community is a representative supporter's club of spectator sports. This study utilized 1,848 members accumulated during three month. To analyze data, Netminer 4.0 and social network analysis were used. The conclusion is following: First, social relation of cyber sports supporter's community showed up dynamic change. Second, social capital of cyber sports supporter's community shows Sports events and training schedules, player transfer, manager, record, game watching and TV watching, cheering, cheering uniform and tools, players, teams and clubs, game photos and video, etc. This is the poor-get-poorer and the rich-get-richer phenomenon.

• The Journal of the Korea Contents Association
• /
• v.9 no.6
• /
• pp.399-406
• /
• 2009

The goal of this research is to examine the influence degree of participant of sports on self-esteem of middle school students. By stratified cluster random sampling method 420, middle school student living in D city joined the survey; it was used to derive the result of this research. Among them, 25 results were excepted by the lack of reliability or un-enough answer rate, so 395 results were used for the research. To analyze collected data, used statistical technique statistical analysis technique frequency, factor analysis, t-test and ANOVA. Through such method of study and formality, this study deduced following result. First, self-esteem of middle school students shows change by the frequency of sports activity. Second, self-esteem of middle school students shows change by the interval of sports activity. Third, self-esteem of middle school students shows change by the intensity of sports activity.

• Proceedings of KHEA Conference
• /
• 2002.10a
• /
• pp.64-70
• /
• 2002

이와 같은 변화를 종합하여 보자면, 패션의 전반적인 흐름인 캐주얼 웨어와 스포티룩의 확산과 아울러 이러한 흐름이 더욱 세분화된다는 것으로 요약할 수 있겠다. 즉 같은 캐주얼웨어 안에서도 travel wear, town casual, outdoor wear등으로 나누어 질 것이고 또한 스포츠 웨어도 일반적인 체육활동을 위한 의복뿐만 아니라, 특정한 스포츠에 가장 적합한 전문 스포츠웨어가 개발될 것으로 예측된다. 그와 아울러, 정장은 더욱 격식과 품위를 강조하는 쪽으로 진행될 것으로 예상된다. 이러한 변화는 우리 사회의 의생활이 다양화되고 세분화되며, 서구의 TPO(time, place, occasion) 개념에 충실한 상황으로 전개되는 것이라고 할 수 있다. 그러나, 이 모든 예측은 주5일 근무제의 도입에 따라 많은 국민들이 여가활동을 증가할 것이라는 가정을 기반으로 하고 있으며, 따라서 새로운 제도 아래서 오히려 근무나 공부시간을 늘어나는 등의 예상치 못한 변화가 일어나는 경우에는 이런 변화가 일어나기는 어려울 것이다.

• The Journal of the Korea Contents Association
• /
• v.12 no.12
• /
• pp.771-778
• /
• 2012

The purpose of the study was to investigate the effects of the after school sports club activity on the school life satisfaction in the middle school students. A total of 640 middle school students in D city at september, 2012 were selected using the stratified cluster random sampling method. The survey instrument was utilized for the current study. Independent variables included participation or non-participation and the level of participation(frequency, duration, intensity), and dependent variables contained the school life satisfaction(classmate, teacher, learning activity, school event, and following rules). After the pilot test, the frequency analysis, exploratory factor analysis, reliability analysis, t-test, correlation analysis, and regression analysis were conducted with the SPSS 18.0 program. Main findings were as followed: First, the school life satisfaction of the middle school students participating in the after school sports club activity was higher than it of non-participants. Second, the level of participation in the after school sports clubs activity had an influence on the school life satisfaction. In detail, satisfaction with the school life of students who frequently, long, and intensively participated in the after school sports club activity was higher.