• 한국운동역학회지
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• 제20권4호
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• pp.447-455
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• 2010

The objective of this study was to analyze the difference in kinematic variables for successful and unsuccessful golf putting strokes. The study population included 8 male secondary school golf players who had played golf for over 3 years and whose handicap was 4 or lower. A hole was made on a 5-m-long artificial flat mat for practice, and an environment similar to that of a real green was created. The participants' motions were analyzed through 3D image analysis, and the difference in kinematic variables for successful and unsuccessful putting strokes in the same direction was determined. Data analysis revealed the following findings: The time spent for a segment of putting was the greatest for the backswing segment for both successful and unsuccessful strokes. During address and impact, the both changed to a larger extent. For successful putting strokes, the change in the elbow angle during the downswing was greater for the right elbow than for the left elbow. For both successful and unsuccessful putting strokes, the left shoulder angle increased during the segment from address to the turning point and decreased during the segment from the turning point to impact. In contrast, the right shoulder angle significantly differed between successful and unsuccessful putting strokes only during address. During successful and unsuccessful motions, the swing was executed with the moving displacement of the X-axis of the club head maintained almost constant along a straight light without back and forth movement. In the backswing segment, moving displacement of the Y- and Z-axes was greater in successful strokes than in unsuccessful strokes; however, this difference was very small for the Y-axis. The velocity of the club head for successful and unsuccessful motions significantly differed during address and at the turning point. The highest velocity of the ball was greater for successful than for unsuccessful putting strokes.

• 한국운동역학회지
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• 제23권2호
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• pp.117-123
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• 2013

The purpose of this study was to provide data to increase the success rate of penalty kicks through quantifying the shape of skilled kicks by performing a kinematic analysis on the change of movement during the kicking phase which the goalkeeper uses as a vital clue. Three high definition video cameras(GR-HD1KR, JVC, Japan) were used for the study and 18 reflective markers were attached to the body joints. Corners of the goal, difficult for goalkeepers to block, were set as aims and 1 m by 1.2 m targets were installed. Each subject had five sets of kicks at random, and the analysis was done on the movements that hit the target. Time, speed of the right lower limb's center of mass, joint angle, and angular velocity were chosen as factors and the results of the analysis showed statistical significance. The player taking a penalty kick should train to avoid leaning one's body towards the kicking direction and change the angle of the right foot right before the impact to decide the direction of the ball. The goalkeeper can increase the save success rate by studying the angle of the kicker's body and the right foot as well as the timing of the kick.

• 한국체육학회지인문사회과학편
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• 제55권2호
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• pp.11-22
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• 2016

루만의 체계이론에 입각해서 기존의 반-도핑 커뮤니케이션을 분석한 결과 다음과 같은 결론에 도달하였다. 기존의 반-도핑 커뮤니케이션은 도핑의 원인과 책임을 개인에게 귀속시키는 개인화 전략을 구사하고 있다. 따라서 문제 해결 방법도 적발, 처벌, 교육을 통한 계몽 같이 철저하게 선수나 지도자 같은 개인에게 초점을 맞추고 있다. 이와 같은 전략은 스포츠체계와 그 주변 체계들의 이해관계가 거미줄처럼 복잡하게 얽혀져 생겨나는 도핑현상을 개인의 자유의지에 따른 결정의 결과로 단순화시킬 뿐만 아니라, 스포츠 및 주변체계들의 성찰 기회를 차단함으로써 체계 내부의 구조적 문제를 은폐시키는데 기여하고, 선수나 트레이너 같은 개별 행위자에게 받아들여지기 어려운 무리한 요구를 부과함으로써 도핑방지노력이 실효를 거둘 수 없게 만든다. 도핑 퇴치 노력이 효력을 발휘하기 위해서는 주체 중심 차원을 넘어서 스포츠조직과 사회적 기능체계들의 차원에서 전략을 구상하고 실행해야 한다.

• 한국콘텐츠학회논문지
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• 제5권6호
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• pp.223-229
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• 2005

강한 체력과 고도의 기술이 필요한 농구경기는 휴식시간중 보다 빠른 피로회복과 큰 신장이 경기의 승패를 결정짓는 중요한 요소라 할 수 있다. 따라서 본 연구는 선수들이 도핑의 위험성이 없고 우수한 효과의 ergogenic aids를 알아보고자 하계훈련기간중 사군자탕의 섭취가 피로 유발물질인 ammonia 농도의 변화와 성장에 관련 있는 IGF-I에 미치는 영향을 알아보기 위해 고교 농구선수에게 6주간 사군자탕을 섭취시킨 결과 ammonia는 섭취기간에 따른 기간에 유의한 차이를 나타냈고, 섭취 기간에 따른 안정시 IGF-I의 농도가 통계적으로 유의한 차(p<.01)를 나타내 사군자탕이 경기 중 피로회복과 선수들의 성장에 보다 효과적인 것으로 나타났다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.720-724
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• 2007

Recently, in accordance with increase of the desire for Sports for All(Life Sports), the swimming pools in many areas are under construction. However, since they used many of the reflexible finish-materials on account of the characteristics of hydrophilic space, most of the Indoor Swimming Pools are generating the excessive reverberation. Such reverberation is bringing about the problem that obstructs the oral communication between the coach and the player, and the Clearness of Sound, besides the sport activity. On this viewpoint, on the object of the actually built indoor swimming pool, after the conduct of an optimized acoustics design by the remodeling through a computer simulation, and by carrying out the Psycho-Acoustics Experiment utilizing of Auralization Technique which is able to experience Virtual Sound Field at the stage of designing, then this thesis has attempted to appraise on the acoustic condition after the completion of construction. It is considered that such result of the study could be utilized as the useful data that enables to improve the curtailment effect of construction cost as well as the acoustic capability, by means of the presupposition control on the acoustic problem from the stage of design, for the occasion when the similar indoor swimming pool is planning to build, henceforth.

• International Journal of Knowledge Content Development & Technology
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• 제9권4호
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• pp.31-45
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• 2019

In this study, a database was established by analyzing the record data research produced in ice hockey sports. The deployed data verification with Ice hockey reference service was demonstrated with ice hockey officials and players. This research utilized the data stored in the KNSU Datanest data repository and developed PDF parsers for batch processing of records. Among the types of records, the game summary, team roster, team statistics, and player statistics files were collected, and tables were extracted from the records. PDF records were converted to text in CSV format which are converted to DataFrame and loaded into the database. Out of the total 22 types of records, 4 types were constructed with OO data parsed as element values. Data verification has found no problems with the quality of the data deployed, showing a high satisfaction with providing 66 factors against the 30 factors provided by the service previously used.

• 한국응용과학기술학회지
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• 제37권5호
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• pp.1314-1322
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• 2020

Sports drinks help optimize and improve performance by delaying and eliminating the buildup of fatigue-causing substances in the body during exercise. Saengmaeg-san is a nature-friendly traditional beverage that has no side effects on the human body and can quench thirst. However, studies on the relationship between exercise ability and Saengmaeg-san are insufficient. The purpose of this study was to prescribe Saengmaeg-san during the summer training period of 4 weeks and to analyze the effect on body composition and exercise performance. Seventeen male participants were divided into 3 groups (Saengmaeg-san acid intake group [n=9], placebo group [n=8]), and body composition (height, weight, muscle mass, fat mass, BMI) and conducted exercise performance (total exercise time and HRmax). In our study, Saengmaeg-san intake had a positive effect on exercise performance, such as decreased body fat percentage, increased exercise time, and decreased HRmax. Therefore, Saengmaeg-san showed the potential as a sports drink. In the future, additional studies on fatigue-related substances, immune function-markers, and blood lipids are needed in order to clearly explain the change in exercise performance due to consumption of Saengmaeg-san.

• 대한정형외과스포츠의학회지
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• 제5권2호
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• pp.94-99
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• 2006

축구는 유산소와 무산소운동이 혼합된 형태의 구기이고, 축구에서 필요로 하는 신체 능력은 지구력, 근력, 스피드, 순발력 및 유연성 등이 있으며, 이중 골 결정력에 영향을 미치는 인자는 순발력이 필수적인 것으로 알려져 있다. 그러나, 최근 축구의 경향을 보면, 스피드를 중시하는 미드필더의 강한 압박을 기본으로 하는데, 따라서 체력적인 요소 중에서 스피드에 더 많은 관심이 모아지고 있다. 이런 스피드의 요소에 대하여 자세히 알아보도록 하자.

• 패션비즈니스
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• 제25권2호
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• pp.127-142
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• 2021

This study aims to organize the prototype design method of compression wear for women professional soccer players. Despite the excellent performance of female soccer players in world competition, most functional wear has been developed mainly for men, so professional female athletes have fewer choices. Soccer is a sport requiring core and lower body muscle strength, and muscular endurance for long periods of playing or walking on the field. Female soccer players did not differ much in upper body compared to other women, but their lower body had a smaller hip circumference than waist circumference and a larger thigh circumference, requiring compilation considering the physical characteristics and movement of athletes. Female soccer players wear sports bras while playing but regular bras and compression wear during normal exercise because they sweat on under their breast, which irritates sensitive skin. For core muscles in the upper body and to support for thigh and hip muscles in the lower body, the uniform in this study was designed by reducing the body size of a professional female soccer player in her 20s and the actual measurements of commercial compilation software to 81% of the chest circumference, 95% of the waist circumference, and 78% of the hip circumference. The design experiment in this study was a simple exercise and did not produce produce results for long-term exercise and performance improvement, but can be used to design a composition pattern system for other professional female athletes.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.181-189
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• 2022

The purpose of this study is to verify study models and examine a causal relationship among authenticity, job satisfaction, organizational commitment, quality of life and job achievement for amateur business team player. In order to achieve the purpose, this study conducted structural equation model analysis for study models consisting of extraneous variables after examining the authenticity(organization, leader) that amateur business players perceive and endogenous variables including job satisfaction, organizational commitment, quality of life, and job performance. The object of questionnaires in this study selected sports business team players nationwide as a population and 348 players were chosen as final effective samples by applying a convenient sampling method for offline and online questionnaires. The research tool for this study is a questionnaire. The two dimensions of authenticity were used by developing a scale. For all endogenous variables, the scales used in previous studies were modified and used according to the purpose of the study. This study analyzed the collected data, applying SPSS Win ver. 23.0 and AMOS 20.0 programs in order to analyze the characteristics of the study objects, describe questionnaires, and verify selected study hypothesis, individual hypothesis was verified after identifying the reliability and validity of measurement model, and the fitness verification of study models. In the results, all of the 8 hypothesis were adopted and the reciprocal relationship among each factors in the study model were observed.