• 한국운동역학회지
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• 제28권3호
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• pp.181-185
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• 2018

Objective: The purpose of this study was to investigate the effect of types of drive-in initial steps in basketball on technical factors, to provide basic information for the enhancement of basketball skill. Method: Ten men (age: $24.70{\pm}2.26years$; height: $181.00{\pm}5.72cm$; weight: $75.70{\pm}8.23kg$; career length: $10.00{\pm}3.59years$), each with a career length of over five years and no history of injury to the lower extremities within the prior six months, participated in this study. They were asked to perform four types of drive-in movements at $35{\sim}60^{\circ}$, wearing their own shoes, after running from a start line 5 m away and catching a basketball passed by an expert passer. The drive-in movements were measured by eight infrared cameras (Oqus 300, Qualisys, Sweden). Collected raw data were used to calculate total initial step time, displacement, velocity, center of mass (COM) height, and COM velocity. Results: Total initial step displacement and velocity of cross drive-ins (JC, SC) were greater than that of direct drive-ins (JD, SD; p < .05). COM velocity of cross drive-ins (JC, SC) was also greater than that of direct drive-ins (JD, SD; p < .05). Conclusion: Our results indicated that cross drive-ins, regardless of stop step type, are more effective than direct drive-ins. This is because cross drive-ins are technically bold due to less influence from walking violations and double dribble rules in basketball. However, using one-sided movement is too difficult to play in competitive game; therefore, basketball players should develop the ability to choose appropriate movement frequency.

• 한국콘텐츠학회논문지
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• 제16권1호
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• pp.319-328
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• 2016

본 연구의 목적은 댄스스포츠 지도자 매력성에 대하여 참여자의 지각수준이 기본심리욕구와 운동지속 행동의도에 미치는 영향에 대하여 알아보고, 기본심리욕구가 운동지속 행동예측에 어떠한 영향을 미치는지에 대해 규명하는데 있다. 이를 위하여 대전광역시 소재 댄스스포츠 교육센터 프로그램 중 동호회 활동으로 참여하고 있는 성인을 대상으로 본 연구에 참여의사를 밝힌 교육센터 6곳을 선정하고 직접 방문하여 총 306명의 자료를 확보하였으며 타당도, 신뢰도 검증 및 다중회귀분석(multiple regression analysis) 등의 통계기법을 이용하여 다음과 같은 결론을 도출하였다. 첫째, 댄스스포츠 지도자 매력성은 참가자의 기본심리욕구에 유의미한 영향을 미친다. 둘째, 댄스스포츠 지도자 매력성은 참가자의 운동지속 행동의도에 유의미한 영향을 미친다. 마지막으로, 댄스스포츠 참가자의 기본심리욕구는 운동지속 행동의도에 유의미한 영향을 미친다.

• 대한방사선기술학회지:방사선기술과학
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• 제40권1호
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• pp.143-153
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• 2017

대학 태권도 선수들의 스포츠 상해 실태 중 발생시기와 주요원인은 체급과 선수경력에서 차이가 나타났으며, 발생상황은 학년과 체급, 선수경력에서 차이가 나타났다. 스포츠 상해 대처능력 방안 중 응급처치는 학년에서 차이가 나타났으며, 상해예방은 학년과 선수경력에서 차이가 나타났다. 치료방법은 차이가 없는 것으로 나타났다. 대학 태권도 선수들은 연습 시가 스포츠상해 발생시기이며, 넘어지는 상황에서 스포츠 상해가 가장 높게 나타난다. 또한 기술부족이 스포츠 상해의 주요원인이 된다는 것이 스포츠 상해 실태의 결론이다. 더불어 스포츠 상해의 대처능력 방안은 얼음찜질로 응급처치를 하고, 본인 마사지로 치료하였다. 또한 상해예방을 위해서는 충분한 피로회복이 상해예방의 최선으로 인지하였다.

• 디지털융복합연구
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• 제14권8호
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• pp.527-536
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• 2016

본 연구는 골프 종목의 엘리트 선수들을 대상으로 도핑에 대한 사고방식 및 성향에 미치는 요인을 확인하기 위해 136명 (남 75명, 여 61명)의 골프선수들을 대상으로 면담 및 설문을 통해 도핑에 대한 사고방식 및 성향과 완벽주의성향, 지각된 동기 분위기에 대한 정보를 수집하였고, 위계적 다중회귀분석을 통해 분석하였다. 그 결과, 남성 골프선수들은 코치의 차별대우가 도핑에 대한 사고방식 및 성향에 정적인 영향을 주는 반면, 경쟁의식은 부적인 영향을 주고, 여성 골프선수들은 코치의 비난이 도핑에 대한 사고방식 및 성향에 정적인 영향을 주는 것으로 나타났다. 이러한 결과는 도핑 교육의 필요성이 제기되고 있는 골프 종목의 엘리트 선수들에게 효율적인 반도핑 프로그램 개발에 유용한 정보로 이용될 것으로 생각된다.

• 전기학회논문지
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• 제66권11호
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• pp.1628-1633
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• 2017

The purpose of this study was to identify the difference and correlation in elbow joint maximal flexion strength according to measurement methods and characteristics of muscular contraction, and to develop the predictive equation of elbow joint maximal flexion strength for the optimal exercise intensity setting and accurate measurement. Subjects were 30 male university students. Elbow joint maximal flexion strength of isokinetic contraction, isometric contraction at $75^{\circ}$ elbow joint flexion position, isotonic concentric 1RM, manual muscle strength (MMT) were measured with isokinetic dynamometer, dumbbell, and manual muscle tester. Pearson's r, linear regression equation, and multiple regression equation between variables were calculated. As a result, the highest value was isometric contraction. The second highest value was MMT. The third highest value was isokinetic contraction. 1RM was the lowest. Predictive equations of elbow joint maximal flexion strength between isometric and isokinetic contraction, between isometric contraction and 1RM, among isometric contraction, 1RM, and body weight were developed. In conclusion, 1RM and isokinetic elbow joint maximal flexion strength could be seemed to underestimate the practical elbow joint maximal flexion strength. And it is suggested that the developed predictive equations in this study should be useful in criteria- and goal-setting for resistant exercise and sports rehabilitation after elbow joint injury.

• 한국운동역학회지
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• 제23권1호
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• pp.85-90
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• 2013

Efficient gait is compensate for a lack of exercise, but the wrong walking can cause disease that joints, muscles, brain and body structure(Scott & Winter, 1990). Also many researchers has been studied gait of positive mechanism using analytical methods kinetic, kinematic. This study is to identify nature of knee adduction moment, depending on different foot progression angle and the movement of rotation of pelvis and body. Health study subject conducted intended walking with three different angles. The subjects of this study classified three types of walking; walk erect, pigeon-toed walk and an out-toed gait. Ten university students of K without previous operation and disease record selected for this study. For accuracy of this study, three types of walking carried out five times with 3D image analysis and using analysis of ground reaction force to analyze nature of knee adduction moment and the movement of rotation of pelvis and body. Firstly, the HC(heel contact) section value of intended walk erect, pigeon-toed walk and an out-toed gait was not shown statistically significant difference but TO(toe off) section value was shown that the pigeon-toed walk statistically significant. The value of pigeon-toed walk was smallest knee adduction moment(p< 0.005). Secondly, X axis was the change of rotation movement body and pelvis when walk erect, pigeon-toed walk and an out-toed gait. Shown statistically Y axis was not shown statistically significant but Z axis statistically significant(p<0.05). These result show the significant differences on TO section when walking moment reaches HC, it decides the walking types and rotates the foot.

• 대한인간공학회지
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• 제34권1호
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• pp.63-73
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• 2015

Objective: The goal of this study is to evaluate the comprehensibility of the newly introduced water-sport prohibitive signs by the Ministry of Knowledge Economy (MKE, later merged into the Ministry of Trade, Industry and Energy) among Koreans and westerners, and to check whether the comprehensibility is affected by cultural differences. Background: The Ministry of Knowledge Economy had newly introduced fourteen water-sport prohibitive signs at the end of 2011 to alert people to potentially dangerous situations. However, no studies had been found so far to review or assess their comprehensibility. Method: Comprehensibility tests of fourteen water-sport prohibitive signs were conducted with forty Koreans and forty Westerners in two sequential sessions. In session I, participants were asked to guess the meaning of each sign verbally in an open-ended test. In session II, participants were encouraged to provide feedback for each sign after its intended meaning was given. Results: Only two out of fourteen signs satisfied the comprehension rate (67%) recommended by ISO standard for both groups (Koreans and Westerners). Cultural difference between Koreans and westerners significantly affect the comprehension rates of the investigated signs, and Westerners exhibit better overall comprehension than Koreans. Five poorly comprehended signs for both Korean and Western groups were identified. Conclusion: The recently introduced water-sport prohibitive warning signs by MKE still need a lot of improvements in order to be implemented nationally or internationally. There were significant differences in the signs' comprehensibility between Koreans and westerners. Application: The findings may serve as a useful input for researchers and watersport sign designers in creating easy-to-comprehend safety signs.

• 한국운동역학회지
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• 제24권2호
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• pp.95-101
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• 2014

The purpose of this study was to investigate the training and detraining effects of a 8-week water exercise on lower extremities coordination during obstacle gait in the female elderly. Eight elderly participants (age: $76.58{\pm}4.97$ yrs, height: $148.88{\pm}7.19$ cm, body mass: $56.62{\pm}6.82$ kg, and leg length: $82.36{\pm}2.98$ cm), who stayed at the Seoul K welfare center, were recruited for this study. All participants had no history of orthopedic abnormality within the past 1 year and completed the aquatic exercise program which lasted for 8 weeks. To identify the training and detraining effect of 8 weeks of water exercise, a 3-D motion analysis with 7 infrared cameras and one force plate sampling frequency set at 100 Hz and 1,000 Hz, respectively, was performed. A two-way ANOVA was performed to find training and detraining effects among diferent obstacle heights. In this study significant level was set at .05. Significant training effects of LTS (lead foot thigh and shank) coordination in all obstacle height were found (p<.05). It is also found that the training effect of LTS remained 37%, 58%, and 25% in obstacle height of 30%, 40%, and 50%, respectively. Lead foot showed the greater detraining effect of coordination compared with trail foot, and SF (shank and foot) coordination revealed better detraining effects of coordination compare with TS (thigh and shank) in both feet. Based on the findings, a 8 week water exercise give an positive effects to the elderly in terms of segment cooperation which potentially helps reducing their accident falls. The magnitude of detraining may also help the elderly to find the retraining moment.

• 디지털융복합연구
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• 제19권4호
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• pp.339-347
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• 2021

본 연구는 객관식 문항이 폐지된 이후인 2014년부터 2020년까지 7년간 체육 중등교사 임용시험의 교과교육학 문항을 한국교육과정평가원에서 제시한 평가내용요소를 근거로 분석하였다. 연구결과로 교과교육학 문항은 7년간 48문항이 출제되었으며, 83개의 하위질문이 발견되었다. 시사점으로는 첫째, 하위질문 개수의 빈도가 높아지면서 통합형 문제가 출제되고 있다. 둘째, 출제 문항 영역의 심각한 불균형 문제가 드러났다. 셋째, 체육교수학습 및 평가, 체육교육과정 영역에 지나친 출제 의존도를 보이고 있었다. 넷째, 교과내용학과 중복되는 평가 영역이 존재함에 따라 혼란이 가중되었다. 그러므로 한국교육과정평가원의 기존 평가 영역별 분류표를 기반으로 평가 내용 요소에 대한 정의가 명확하게 내려져야 하며 신뢰로운 교사시험을 위해 특정 학자와 이론에 의존에서 벗어나 학교현장에서 도움이 될 수 있는 문항들이 개발될 필요가 있다.

• 한국운동역학회지
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• 제31권3호
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• pp.214-219
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• 2021

Objective: The aim of this study was to evaluate the differences in muscle activity of hamstring muscle depending on the position of the feet during Swiss ball hamstring curl exercise. Method: Total of 15 male participants with no history of hamstring muscle injuries and musculoskeletal disorders in the past 6 months were participated in this study (Age: 29.27 ± 4.96 yrs, Height: 173.47 ± 5.18 cm, Body mass: 75.47 ± 12.50 kg). The muscle activation of semitendinosus and biceps femoris with four different feet positions including neutral stance, internal rotation, external rotation, and wide stance were measured during a Swiss ball hamstring curl exercise. For the analysis, the Swiss ball exercise movement comprised of 3 events (90°→ 0°→ 90°) based on the knee angle and 2 phases relative to the mechanism of muscle contraction (eccentric/concentric contraction). To pursue the study goal, an one-way ANOVA with repeated measures was performed with statistical significance as α = 0.05. Results: There was no statistically significant feet position effect found during the Swiss ball hamstring curl with eccentric contraction phase (p>.05). It is, however, semitendinosus showed an enhanced muscle activation in concentric contraction phase, displaying the highest muscle activity in wide stance and the lowest in external rotation (p<.05). Conclusion: Our findings suggest that this exercise can be beneficial in selectively training the semitendinosus. In other words, Swiss ball hamstring curls performed in wide stance strengthens semitendinosus, which improves the stability of knee and are effective in preventing knee injuries and reinforces rehabilitation.