• 한국식품영양과학회:학술대회논문집
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• 한국식품영양과학회 2004년도 Annual Meeting and International Symposium
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• pp.171-184
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• 2004

The silk amino acid supplementation is unknown to affect the release of several hormones related to energy production and metabolism during prolonged exercise. This study examined the effects of silk amino acid supplementation on the level of blood amino acid, energy substrates and hormones level during prolonged treadmill exercise in college taekwondo player. A prolonged treadmill test was carried out 60 min at 65% of maximal heart rate on 8 athletics. Blood samples were obtained form antecubital vein of subjects at rest bed 30 minute before test, after exercise and rest 1 hour. The subjects were supplemented silk amino acid (6,390 mg/day) fur 4 week. The silk amino acid supplementation did not produce significant changes on the levels of blood lactate, ammonia, amino acid, glucose, triglyceride, total cholesterol, HDL, LDL, seratonin and leptin at rest bed 30 minute before test, after exercise and rest 30 minute. The silk amino acid 4 week supplementation did not affect the levels of blood amino acid, energy substrates and hormones during prolonged treadmill exercise.

• 한국운동역학회지
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• 제13권3호
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• pp.311-325
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• 2003

A relation between the movement range of arms and arising moment has been studied to find out efficient movement range to minimize impact concerning arm landing in sports aerobics. Four male athletes who won top three in national-level sports aerobics competition were chosen for the experiment. They were allowed to jump in between two force platform so that the right hand and the right leg could land onto the front and rear force platform, respectively. The sampling frequency was 200 Hz. The main conclusions based on the analysis of the angle and joint moment parameters of wrist, elbow, and shoulder are as follows: 1. The wrist moment was small when its angle was small, indicating that the dorsi-flexion of the wrist joint offered a positive influence to reduce wrist moment. 2. The elbow angle increased as wrist angle decreased and vice versa. This means that the movement range of the wrist joint affects that of the elbow joint. The darsi-flexion of the wrist is the position to absorb the impact of the elbow effectively rather than to absorb the impact of the wrist itself. The impact is absorbed by the flexion of wrist joint rather than the wrist. 3. The degree of moment transfer of the shoulder joint, having absorbed the impact from the elbow and elbow joint, became dependent on the efficiency of the fore-joints impact absorption.

• 한국게임학회 논문지
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• 제19권6호
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• pp.15-24
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• 2019

전통적인 제조업은 물론, 정부의 지원 정책 없이 성장해 온 게임산업도 정부의 다양한 산업적, 사회적 정책에 의해 영향을 받는다. 본 논문에서는 게임산업에 대한 학계, 언론계, 산업계 등의 전문가를 대상으로 설문조사를 실시, 게임산업의 주무부처인 문체부의 2017년 이후 16개월 동안의 게임산업 정책에 대한 평가와 분석을 시도했다. 평균분석 결과 모든 항목에서 저조한 점수가 나왔으며, '게임 인식 개선 정책'이 1.97로 가장 낮은 점수가 나왔다. ANOVA에 의한 집단간 차이 검정 결과 '생태계 복구'와 '인력양성'을 제외한 나머지 항목에서 설문 집단간 차이는 존재하지 않았다.

• 한국운동역학회지
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• 제21권1호
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• pp.57-65
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• 2011

This research was conducted to biomechanically analyze Tippelt motion in parallel bars, and establish technical understanding. To achieve that goal, the performances of the Tippelt acts carried out by five world top-class national gymnasts in the parallel bars 3-dimensional cinematographic analysis and EMG analysis were conducted and following conclusion were obtained. The Tippelt motions of excellent national gymnasts perform tap motion through the down swing of a large circular movements, and perform kick-out motion rapidly extending shoulder joint angle and hip joint angle with the trunk in a position close to perpendicular position at the vertical downwardness of the grasping the bars. At this time, if handstand starting the movement is too delayed or rapidly down swung, it was shown that from the initial falling, unnecessary muscular power was wasted in trapezius, anterior deltoid, erector spinae, latissimus dorsi, upper rectus abdominis, lower rectus abdominis. The muscular parts in tap motion generating muscle action potential were pectoralis major, rectus femoris, upper rectus abdominis, lower rectus abdominis, and those in kick-out motion were upper rectus abdominis, lower rectus abdominis, trapezius and anterior deltoid.

• 한국운동역학회지
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• 제30권3호
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• pp.265-273
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• 2020

Objective: The aim of this study was to investigate the effect of participation in contact sports on neurocognitive scores, dual-task walking velocity, and cognitive costs in retired athletes. Method: Forty-four retired athletes (mean age = 26.4±5.5 yrs) and thirty-eight controls (mean age = 26.1±4.9 yrs) participated in this study. Neurocognitive score was collected using computerized neurocognitive testing using RehaCom. Gait velocity was collected one single task, four dual-tasks, and two multi-tasks using Optogait. Mann-Whitney U test was performed to compared differences in cognitive scores among groups. A mixed-design two-way ANOVA and Bonferroni posthoc test were used to assess the effect of group and walking tasks for each condition. Results: The auditory divided attention of neurocognitive score of retired athletes was higher than the control group (p < 0.05). No statistical differences were observed in the other neurocognitive scores between groups. The changes in walking velocity and cognitive costs according to the dual-task walking tests differed between the two groups (p < 0.05). Conclusion: Although participation in contact sports did not affect the neurocognitive results of retired athletes, it could be confirmed that the reduction in walking velocity and an increase in cognitive costs during dual-task walking. Rather than observing only neurocognitive scores as a single evaluation item for cognitive evaluation of retired athletes in relation to daily life, the application of the dual-task gait test may provide useful information.

• 한국운동역학회지
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• 제30권3호
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• pp.217-223
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• 2020

Objective: The purpose of this study was to analyze the effect of postural sway on the kinematic variables of the putter head during golf putting and to provide information to the importance of postural sway control in the putting stroke for novice golfers. Method: The center of pressure (CoP) and Kinematics variables of the putter head were calculated during 2 m flat golf putting using 8 motion capture cameras (250 Hz) and 2 force plate (1,000 Hz). SPSS 24.0 was used to perform Pearson's correlation coefficient and simple regression analysis, and the statistically significance level was set to .05. Results: As a result of analyzing the correlation between CoP variables and the putter head rotation angle, the CoP moving length, CoP moving range (ML direction), and CoP moving velocity (ML direction) showed a positive correlation with the putter head rotation angle (yaw axis) and were statistically significant. Conclusion: Therefore, In order to perform the accurate putting stroke maintaining the ball's directionality, it is determined that it is important to control posture sway in the ML directions by minimizing the movement and velocity of the CoP.

• 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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• 제2권2호
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• pp.92-99
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• 2003

스포츠 활동과 사고로 인하여 전방십자인대 재건술이 많이 증가하고 있으며 여러 종류의 자가 및 동종이식건이 많이 사용되어지고 있다. 자가 골-슬개건-골을 이용한 전방십자인대 재건술이 제일 대표적인 이식건으로 사용되고 있으나 공여부의 합병증과 전방슬관절통 등의 문제가 발생될 수 있으며 환자에 따라서 이러한 문제를 줄일 수 있는 다른 이식건의 사용도 필요할 수 있다. 여러 이식건의 생역학적인 특성, 장점 및 단점, 합병증을 충분히 이해함으로써 환자 개인에 맞는 적절한 이식건을 선택할 수 있으며 수술후 환자의 만족도를 높일 수 있을 것으로 생각된다

• 한국융합학회논문지
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• 제12권4호
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• pp.179-190
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• 2021

이 연구는 국내 스포츠클라이밍에 대한 다양한 자료를 취합하여 역사 및 현황을 분석하고 이를 바탕으로 스포츠 클라이밍의 발전을 위한 융합적 방안을 제시하고자 하였다. 정책적인 측면에서는 스포츠클라이밍 단일 협회의 구성이 필요하며 대한산악연맹과 분리하고 독립적으로 활동할 필요가 있다. 학교 특기생으로 스포츠클라이밍 종목을 육성할 필요가 있으며, 특히 대학 운동부를 활성화해야 한다. 이러한 학교 운동부 선수들이 성장하여 각 생활스포츠지도자 및 전문스포츠 선수로 활발하게 활동하여야만 대회의 활성화는 물론이며 스포츠클라이밍의 활성화도 이루어질 것이다. 공공체육 시설에 대한 정확한 집계가 가장 필요하다. 공공체육 시설 관리주체인 문화체육관광부에서 먼저 스포츠클라이밍에 대한 현황파악을 정확히 실시하여야 한다.

• Physical Therapy Rehabilitation Science
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• 제11권1호
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• pp.1-7
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• 2022

Objective: The purpose of this study was to assess the validity of the global rating of knee function as a measure of participation restrictions experienced during activities of daily living and sports by patients with a history of anterior cruciate ligament reconstruction (ACLR). Design: Cross-sectional study. Methods: Forty-three subjects (33 males, 10 females, age=20.3 ± 1.3 years), at a mean of 31.2 ± 14.4 months following ACLR, participated in this study. During testing, subjects were first asked to provide a global rating of function by assessing their level of knee function on a 0 to 100 scale, with 0 points representing complete loss of function due to their knee injury and 100 points representing their level of function prior to their knee injury. After providing a global rating of function, subjects completed the Knee Outcome Survey (KOS) Activities of Daily Living Scale (ADLS) and Sports Activity Scale (SAS), which served as the measure of participation restrictions in this study. Results: Pearson product correlations revealed moderate relationships between the global rating of function and the ADLS (r=0.66, p<0.0001) and SAS (r=0.69, p<0.0001). Conclusions: The global rating of knee function provides a valid measure of participation restrictions experienced during activities of daily living and sports by patients with a history of ACLR.