• 보건교육건강증진학회지
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• 제33권3호
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• pp.95-107
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• 2016

Objectives: Physical activity is well known as one of the most effective health behaviors for maintaining and promoting health. The purpose of this study was to investigate the regional variation, compositional and contextual factors on physical activities in Korea. Methods: This study analyzed data of 6,353 adults in 4th-1, 2 Korea National Health and Nutrition Examination Survey (KNHANES). Independent variables were compositional factors that included general characteristics, health behaviors, health status, and contextual factors that included physical environment, political environment, and social safety net. Dependent variables were vigorous physical activity, moderate physical activity, and walking activity. Multilevel analysis were used to determine a variation of physical activity between levels of compositional factors and contextual factors. Results: Physical activities of the Korean people were affected by the regional variables. Financial independence and population density were related with moderate physical activity significantly. Population density, school sport or rally spaces, cultural facilities, and social safety concerns were related with walking activity significantly. These variables impacted on physical activities along with variables at the individual level. Variance Partition Coefficient were 9.94% at moderate physical activity and 2.91% at walking activities, respectively. Conclusions: The results suggest that the regional variables should be considered when planning public intervention to promoting physical activities in Korean adults.

• 산업융합연구
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• 제22권5호
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• pp.79-88
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• 2024

이 연구의 목적은 청소년의 신체활동과 주관적 건강인지와의 관계를 알아보고 그 관계에서 비만 관련 지표인 체질량 지수(BMI)가 매개효과 혹은 조절효과가 있는지 규명하는 것이다. 이 연구의 목적을 달성하기 위해 2022년 제18차 청소년건강행태온라인조사 통계의 원시자료를 활용하였으며, 최종적으로 23,612명의 자료를 연구 대상으로 선정하였다. 자료 분석은 확인적 요인분석과 구조방정식 모형을 적용하였으며, 매개효과를 검증하기 위해 Bootstrapping 기법을 활용하였다. 또한 조절효과를 검증하기 위해 구조방정식모형의 다중집단 분석을 적용하여 pairwise parameter comparison 값을 산출하였다. 모든 통계적 유의수준은 .05로 설정하였다. 이 연구의 결과는 다음과 같다. 첫째, 청소년의 신체 활동량이 많을수록 주관적 건강 인식은 긍정적인 효과가 있는 것으로 나타났다. 둘째, 신체활동과 주관적 건강 인식 관계에서 주관적 체형 인식은 부분매개효과 있는 것으로 나타났다. 셋째, 신체활동과 주관적 건강 인식에서 주관적 체형은 조절효과가 있는 것으로 나타났으며, 구체적으로 주관적 체형을 보통으로 인식하는 사람이 약간 혹은 매우 살이 찐 편으로 인식하는 사람보다 신체 활동량이 많을 수록 주관적 건강 인식에 더 긍정적으로 응답하는 것으로 나타났다. 결론적으로 청소년기에는 충분한 신체활동을 통하여 비만을 예방하고, 주관적인 건강 상태를 긍정적으로 변화할 수 있도록 노력하는 것이 중요하다.

• 복식문화연구
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• 제21권1호
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• pp.31-41
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• 2013

By researching Western equestrian clothing, this study investigated the process in which styles of menswear are introduced into women's sportswear. In addition to women's equestrian clothing shown in paintings and illustrations kept in overseas museums, this study also analyzed books addressing 200 years of Western dress style history, from the late $17^{th}$ century to the $19^{th}$ century. The analysis data present the design characteristics of women's equestrian clothing according to different periods. A total of 21 works were used as research data: two from periods prior to the $17^{th}$ century, three from the $17^{th}$ century, ten from the $18^{th}$ century, and six from the $19^{th}$ century. The research results show that items of trendy menswear were commonly used in women's equestrian clothing during the late $17^{th}$ century - to be specific, in all forms of clothing worn on the upper body, including coat and cravat, tricomhat, and accessories. Women's equestrian clothing after the $18^{th}$ century took the form of menswear. However, the uniform was also generally worn with a fitted, tailored redingote on top of the robe, along with pants. In the $19^{th}$ century, women's equestrian clothing became longer in length, like men's styles. The uniform gradually lost volume, and the jacket became shorter and narrower. In addition, the drawers were replaced with pants that came down to the ankles, which were similar to men's trousers. Breeches also became knee - length, thus following the style of menswear. These results show that women's equestrian clothing, worn during horseback riding, a sport previously enjoyed by Western aristocrats, were similar to what men wore. Also, in contrast to the distinct differences seen between men's and women's daily clothing, the equestrian uniforms of women showed a tendency to follow the clothing style of men.

• 한국치위생학회지
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• 제9권3호
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• pp.545-557
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• 2009

Objectives : This study was to investigate the use of mouth-guards and maxillofacial injuries and to examined the relationship among variables in athletes group. Methods : The subjects were 459(86.5%), who were 18 years or older with mean age of 20.7 years. Data was collected using a self administrated questionnaire from May 25 to June 15, 2009. We surveyed maxillofacial injuries(temporo-mandibular disorders contained) and mouth-guards usage and confidence concerning mouth-guards in athletes. The data were analysed with chi-square analysis, fisher's exact test and logistic regression using the SPSS 15.0 windows. Results : Prevalence of body or maxillofacial injuries experiences was 54.5% for athletes and 47.1% for non-athletes groups(p>0.05). The other hand, the incidence temporo-mandibular disorders was 67.0% for athletes and 49.8% for non-athletes groups(p<0.05). The experience of the use of mouth-guards was 83.3% for athletes and 78.8% for non-athletes, there were not significant differences between athletes and non-athletes groups (p>0.05). Risk factors found to be significantly related to the occurrence of maxillofacial injury were: unused mouth-guards(OR=2.83), no rules for use of mouth-guards(OR=2.46). Conclusions : Based on the findings, maxillofacial injuries experience is highly associated with mouth-guards usage, not only athletes also general people should be educated on the use of mouth-guard in order to reduce the incidence of maxillofacial injuries.

• 디지털융복합연구
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• 제15권1호
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• pp.527-536
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• 2017

연구는 체육계열 대학생이 인식한 경력개발지원과 구직강도의 관계에서 구직효능감의 매개효과의 관계를 규명하는데 목적이 있다. 이러한 연구 목적을 달성하기 위한 연구대상은 서울, 충남, 경상권에 소재한 대학교의 체육전공자 중 3, 4학년을 대상으로 223명의 자료를 수집하였다. 수집된 자료는 SPSS 20.0 프로그램을 이용하여 설문지의 신뢰도와 타당도검사, 상관분석을 실시하였으며, 경로분석은 AMOS 20.0 프로그램을 이용하여 분석을 실시하였다. 이러한 과정을 통해 얻어진 결과는 다음과 같다. 첫째, 체육계열 대학생이 인식한 경력개발지원은 구직효능감에는 통계적으로 정적인 영향을 미치고, 구직강도에는 통계적으로 유의미한 영향을 미치지 못했다. 둘째, 체육계열 대학생의 구직효능감은 구직강도에 통계적으로 정적인 영향을 미쳤다. 셋째, 체육계열 대학생이 인식한 경력개발지원과 구직강도 사이에서 구직효능감은 완전 매개효과가 있는 것으로 나타났다.

• 한국통신학회논문지
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• 제27권8A호
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• pp.836-845
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• 2002

Video Summary는 길이가 긴 Video를 고속으로 효율적으로 열람할 수 있도록 하는 도구의 하나이다. Video Summary는 대표 프레임(Key-frame)들의 집합으로 볼 수 있는데 대표 프레임은 Video의 Genre에 따라서 달리 정의 및 생성될 수 있다. 즉 모든 Genre의 Video에 대해서 획일적인 방법으로 Summary를 만드는 것은 적절하지 못한 결과를 초래할 수 있다. Video의 Genre를 구별해내는 기술은 위와 같이 효율적인 Video Summary 생성에 유용한 처리 과정이라 할 수 있다. 본 논문에서는 이와 같이 효율적 Video 관리를 위해 MPEG 부호화 영역에서 MPEG Video의 Genre를 분류하는 방법을 제안한다. 제안된 방법은 프레임을 복호하지 않고 비트스트림을 직접 처리하여 기존 방법들에 비해 계산이 비교적 단순하고 처리시간을 단축시키는 장점을 가지고 있다. 또한 제안된 방법은 대부분의 작업을 시각 정보만을 이용하여 수행하며 이 정보들의 시, 공간적 해석을 통해 Genre를 확인하게 된다. 실험은 만화(Cartoon), 광고(Commercial), Music Video, 뉴스, Sports, Talk Show의 6개 Genre Video에 대하여 실행하였다. 실험 결과, 구조가 명확한 Talk Show와 Sports의 경우 90% 이상의 결과를 얻었다.

• International Journal of Computer Science & Network Security
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• 제22권5호
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• pp.154-162
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• 2022

Digital marketing tools are actively used in managing the development of park and recreation complexes to familiarize the population with the objects of natural heritage. This article aims to empirically evaluate digital marketing tools for popularizing the park and recreational complexes. The methodology was based on the concept of ecosystem value of park and recreation complexes as a natural heritage site. These methods included: identifying and selecting websites with information about park and recreation complexes in Slovakia and Ukraine. structural analysis of the main channels of online details about natural parks. Assessing the current state of online identity of the studied sites from the perspective of Internet users. The results indicate that to manage the development of park and recreational complexes developed their driven official websites in the Internet space, on which sections structure the information with the allocation of data on tourism and recreational potential. The article identifies additional digital marketing tools for managing the development of park and recreation complexes, particularly social networks and tourist websites. There is a sufficient amount of information about tourist recreation sites within these natural parks and tourist routes. Among the main problems of the websites: the information on the websites is entirely textual, there is a lack of sufficient data on social networks, despite the created official pages, there is no video content, which was more attracted tourists and visitors, allowing a visual assessment of the tourist potential; there is a problem of many communication channels to present the natural heritage of the countries. The research proves that the website is the primary and most common digital marketing tool for natural heritage, structuring information about tourism potential and recreation.

• 한국운동역학회지
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• 제25권2호
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• pp.183-190
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• 2015

Objective : Walking with a Material handling is an activity frequently undertaken by agricultural workers in Korea, due to the nature of their work. This study aimed to investigate differences in biomechanical variables according to the mechanical alignment of the lower limbs when walking with a heavy load, and to use this as basic data in the design of various working environments to reduce the skeletomuscular burden on the knee joint. Method : The study subjects comprised of 22 right-foot dominant adult men and women aged between 20 and 23 years. The subjects were divided into a varus or valgus group according to the mechanical alignment of the lower limb by using radiographic findings. The subjects walked without any load and with a load of 10%, 20%, or 30% of their body weight held in front of them. The Kwon3d XP program was used to calculate biomechanical variables. Results : The flexion/extension moment of the knee joint showed a decreasing trend with increased load, irrespective of the mechanical alignment of the lower limb, while the varus group did not show normal compensatory action when supported by one leg at the point of maximum vertical ground reaction force. In addition, in terms of the time taken, subjects showed no difficulties in one-foot support time up to 20%/BW, but at 30%/BW, despite individual differences, there was an increase in single limb. The increased load resulted in a decrease in the ratio of standing phase to ensure physical stability. The valgus group showed a trend of increasing the stability of their center of mass with increasing load, through higher braking power in the early standing phase. Conclusion : In conclusion, although there was no statistical difference in biomechanical variables according to the mechanical alignment of the lower limbs, the varus group showed a more irregular walking pattern with a Material handling than the valgus group, partially proving the association between lower limb alignment and walking with a Material handling.

• 한국운동역학회지
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• 제17권2호
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• pp.217-226
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• 2007

Putting score counts about 43 % of the golf score. The dominant idea of the putting motion to amateur golfers as well as to many professional golfers is a pendulum-like motion. If a golfer's putting stroke motion is a pendulum-like motion, the putting motion should be straight-back-and-through, the same backswing, downswing, and follow through length and period, and a swing with a fixed hinge joint. If the putting motions of the human are different from the pendulum motion, there could be confusion in understanding and teaching golf putting. The purpose of this study was to examine the center of rotation(COR) of the putter head to reveal whether professional golfers really putt like a pendulum. Thirteen male professional golfers were recruited for the study. Each golfers executed 10.94 m putts six times on an artificial grass mat. Putter head position data were collected through a 60 Hz three-dimensional motion analysis system and low pass filtered with cut-off frequency of 6 Hz. COR of the putter head was mathematically acquired. Each golfer's last five putting motions were considered. The results show that the COR of the putter head was neither fixed nor located inside of the golfer. The medio-lateral directional component of the COR of the putter head fluctuated in the range of 10 cm during downswing and follow through. The anterior-posterior directional component of the COR of the putter head was fixed from the beginning of the downswing through impact. Just after impact, however, it moved to the target up to 60 cm. The superior-inferior directional component of COR of the putter head moved in a superior direction with the beginning of the downswing and showed peak height just prior to impact. During the follow through, it moved back in an inferior direction. The height-normalized peak value of the COR of the putter head was $1.4{\pm}0.3$ height. Technically speaking, male professional golfers' 10.94 m putting motion is not a pendulum-like motion. The dominating idea of a pendulum-like motion in putting might come from the image of the flawless, smooth motion of a pendulum.

• 한국운동역학회지
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• 제12권1호
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• pp.15-30
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• 2002

The purpose of this study was analyzed the effect of kinematical and kinetical factors of lower extremity of form change in the cause of growth an unborn child during in pregnancy. Three pregnant women were selected from pregnant 24 weeks as subjects. Each subjects were required to walk with usual walking speed. Cinematographic and GRF data were collected during walking, and the kinematical and kinetical variables were calculated using Kwon3d. Based on the results of the study, the following conclusions were drawn : 1. Step width and Step length The change of form during the period of pregnancy was not statistically found significant in the step width and the step length. 2. Angle of lower extremity 1) The change of form during the period of pregnancy was not statistically found significant in the hip angle at right heel contact, mid stance, but it was statistically found significant in the hip angle at toe off on p<.05. 2) The change of form during the period of pregnancy was not statistically found significant in the knee angle at right heel contact, mid stance, but it was statistically found significant in the knee angle at toe off on p<.05. 3) The change of form during the period of pregnancy was not statistically found significant in the ankle angle at right heel contact, mid stance, but it was statistically found significant in the ankle angle at toe off on p<.05. 3. Ground reaction force 1) The change of form during the period of pregnancy was statistically found significant in medial-lateral force(Fx) on p<.001. 2) The change of form during the period of pregnancy was not statistically found significant in post-anterior force(Fy). 3) The change of form during the period of pregnancy was statistically found significant in impulse force and minimum peak of vertical reaction force on p<.001, p<.01 but it was not statistically found significant in second maximum force.