• Korean Journal of Applied Biomechanics
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• v.31 no.1
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• pp.37-43
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• 2021

Objective: The purpose of this study was to investigate the effect of mobile phone text messaging on the collision avoidance strategy for an approaching and stationary pedestrian. Method: Eighteen healthy young adults participated in this study. Each participant was asked to perform a task to walking with/without mobile phone text messaging and a task to avoid collisions with another pedestrian who was approaching or stationary during walking. Results: When text messaging with avoidance collision, it showed an early onset time, a larger mediolateral COM trajectory, trunk rotation angle and trunk rotation velocity (p<.05). Also, compared to an approaching pedestrian, when avoiding collision with a stationary pedestrian, it showed a later onset time, a lager avoidance displacement, mediolateral COM trajectory, trunk rotation angle (p<.05). Conclusion: Results suggest that mobile phone text messaging while collision avoidance leads to delay the perception stage and alters the adaptation stage. Consequently, pedestrian executed in an exaggerated avoidance action to create a greater safety margin when attending to mobile phone test messages while avoiding another pedestrian.

• Journal of Digital Convergence
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• v.19 no.6
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• pp.363-372
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• 2021

The Purpose of this study was to analyzed the possibility of sport leaders cooperative model promote life sport through the creation of stable jobs for sports leaders. For the study, a questionnaire in preceding study was revised through the advisory committee and used to survey 20 life sports leaders in D city and 10 operators of sports cooperatives. After analyzing and categorizing of the survey results, the following conclusions were obtained. Sports leaders' cooperatives can be a model for revitalizing life sports, if more than 5 life sports leaders recognize the clear purpose and necessity through education, and operate the cooperative through communications in unity of members. It is thought that this can a new method for the development of the diversity of sports participation and the development of life sports.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.21 no.3
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• pp.41-45
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• 2013

In this study, we surveyed the operating status of the Runway for the Light Sport Aircraft(LSA) in Korea, and analyzed the Airfield Facilities Manual for the Air Leisure and the Standard Specification for Recreational Airpark Design. Based on the information, we presented the displacement of the threshold concept, to ensure the Runway Length and the Runway Safety Area, and operation of LSA in Korea.

• Proceedings of the Korean Society of Life Science Conference
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• 2005.04a
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• pp.135-136
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• 2005

• Journal of Distribution Science
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• v.15 no.10
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• pp.93-103
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• 2017

Purpose - Sports and the media have been developed together through a close relationship. During the past decade, the media landscape and the coverage of sports events have been changed. Sports fans can use the sports content at the time they want, on the platform they prefer. Furthermore, thanks to the advanced information technology, sports fans are likely to be more engaged in sport in communication technology-friendly stadium. However, the literature on the relationship between sports and the media has heavily focused on the differences of media types, clear distinction between media suppliers and consumers, and the limited media extension. Given the limitation of prior research, therefore, it has not fully reflected the change in society and culture, the importance of media recipients or consumers, and the mediating characteristic of the media. In order to generate further insights for sport media related industry and its society, it is necessary to comprehend the contemporary phenomena of real world situation in new media and sport and to discuss how new media influence sport and how their relationship is changing in managerial context. The purpose of this study is to identify new media cases as distribution channels in sports context and is to develop insights by discussing its role and meaning of new media in sport society. Research design, data, and methodology - The study employed the theory-centered review and case analysis. In order to explain phenomena of the role of new media in contemporary sport and to generate related insights in sport context, the study reviewed the new media cases applied in sport industry and interpreted their meaning by employing medium theory, remediation theory, and new media theory. Results - The study discussed the limitation of prior sport media research and identified the characteristics of sport as new media such as remediating, extending sensory organs, reiterating physical space and electronic space. Conclusions - The study derived the characteristics of sport as new media, in a sport setting, and through sports settings. Findings would assist to comprehend the role of new media in spectating sport and provide insights for sport media study.

• Korean Journal of Applied Biomechanics
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• v.29 no.4
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• pp.227-235
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• 2019

Objective: The purpose of this study was to evaluate the effect of passive-acute temperature therapy of the femoral muscle and dynamic warm-up on the countermovement jump performance. Method: Twenty male track and field athletes from national team underwent three treatments applied on the femoral muscles; cold temperature treatment, thermal treatment and dynamic warm-up. The variables extracted at 2 time points (pre-measurement and post measurement) were the temperature of the left and right femoral muscle, displacement & velocity of centre of mass, peak power out, range of motion and moment & power of the knee joint. Results: There was a statistically significant difference in the temperature of the femoral muscle according to measurement time which was high in the order of thermal treatment, dynamic treatment and cold treatment. The jump height was the highest in the dynamic warm-up with no statistically significant difference for the range of motion of the knee joint. The peak power out at dynamic warm-up and the power of the knee joint were statistically significant according to the treatment and measurement time. Conclusion: Local cold and thermal treatment of femoral muscles at ambient temperature did not improve jump performance, while dynamic warm-up was considered to be effective for maintaining the performance of the activities that require strong muscular power.

• Journal of the Korea Society of Computer and Information
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• v.29 no.1
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• pp.211-218
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• 2024

This study attempted to derive a new policy paradigm of life-span sport of disabled children. For that purpose, collecting and analyzing related preceding researches and literatures from 2008 to present (2022), this study firstly found out past life-span sport policy paradigms for disabled children and the causes of their changes, and secondly found out social problems which present policies could not deal with. Through those study process, this study suggested life-span sport in response to the demands and needs of children with disabilities which could include life-span sport centered on disabled children, life-span sport with family members, the realization of the essential value of life-span sport for the human rights of children with disabilities, and the development of new methodologies using smart technologies.

• International Journal of Contents
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• v.6 no.2
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• pp.53-58
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• 2010

Social capital is regarded as the alternative plan and the index of healthy society for constructing social tie through solving social problems on the basis of causal relationship between sports, social capital, and healthy society, in order to accomplish sound society. The role of sports to construct healthy society and social capital is emphasized here. To accomplish healthy society amid various social deviations nowadays, the value of sports should be newly recognized and highlighted among the general public. To attain this purpose, organizing sports club as a voluntary association and facilitating its activities, securing confidence for the sports organization and policies, developing and popularizing sports program to form community and civil society should be embodied. The research field of sports sociology should inquire into the most suitable condition in constructing healthy society and social capital, and should make efforts to find out realistic solutions to satisfy this that purpose. To examine this aspect, cooperative research on micro scale and macro scale of trust as social capital interdisciplinary research into the field of psychology and sociology, research on the methodology of the social network, and critical research are required.

• IMMUNE NETWORK
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• v.5 no.2
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• pp.117-123
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• 2005

The immune response to any stimulus is complex, requiring coordinated action by several types of cells in a tightly regulated sequence. Thus, a physical stress such as exercise may act at any number of points in the complex sequence of events collectively termed the immune response. Although exercise causes many propound changes in parameters of immune function, the nature and magnitude of such changes rely on several factors including the immune parameters of interest; type, intensity, and duration of exercise; fitness level or exercise history of the subject; environmental factors such as ambient temperature and humidity. Although regular moderate exercise appears to be important factor for increasing immunity, Athletes are susceptible to illness, in particular upper respiratory track infection, during periods of intense training and after competition. In addition, in elite athletes, frequent illness is associated with overtraining syndrome, a neuroendocrine disorder resulting from excessive training. Through this paper, we want to investigate the effects of exercise on the immunosuppression such as exercise induced lymphopenia, asthma, anaphylaxis, URT (upper respiratory track), and TB (tuberculosis) infection. and also, we want to suggest a direct mechanism, protection and therapy of exercise induced immunosuppression.

• Journal of Nutrition and Health
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• v.45 no.5
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• pp.437-442
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• 2012

The purpose of this study was is to investigate the arthritis treatment and prevention of the effects the herbral administration to experimental animals induces arthritis 4 weeks for medicinal herbs (Scutellaria baicalensis Georgi, Acanthopanacis cortex, Achyranthis Radix). To investigate the prevention of histopathological examination and molecular biological examinations for arthritis improvement in vivo New Zealand, white rabbits were divided into a normal (Normal, n = 7), or a collagen-induced arthritis (CIA, n = 7), or a collagenase injection and medicinal herbs (SAA, n = 7). It was confirmed that induced arthritis was treated with Gross examination, and the measurement of average arthritis index (MAI) and improved arthritis by medicinal herbs. TNF-${\alpha}$ and IL-$1{\beta}$ were significantly increased in the CIA and SAA groups, compared to the normal group (p < 0.05). MMP-1 and TIMP-2 were significantly increased in the CIA, compared to the other groups (p < 0.05). MMP-1 and TIMP-2 were significantly decreased in the SAA group, compared to the CIA group (p < 0.05). As a result, Herbal administration used in this study might be able to help in the treatment of arthritis induced by inflammatory and immunosuppressive effects, that which can be expected.