• 한국생활과학회지
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• 제13권3호
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• pp.407-415
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• 2004

The purpose of this study was to investigate the effect of kindergarten's factors on athletic movement ability in early childhood. The factors included teacher's perception of athletic movement, length of time for physical activity, and number of athletic facilities in the kindergarten. The subjects consisted of 551 children aged from four to five years in 8 private kindergartens. The instruments used for this study were the obstacle course of Project Spectrum for measuring athletic movement ability, and the questionnaire to investigate the teacher's perception, length of time for physical activity, and number of athletic facilities in the kindergarten. The data from all the tests were analyzed by correlation and regression analyses. The results of this study exhibited that the length of time for physical activity was the most important factor among three factors, and the teachers' perception of athletic movement and the number of athletic facilities in the kindergarten were also deciding factors for the children's athletic movement ability.

• PNF and Movement
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• 제9권2호
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• pp.21-27
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• 2011

Purpose : The purpose of this study was to investigate PNF exercise, the athletic performances and the ability of exercise capacity in Taekwondo. Methods : This is a literature study with books and articles, seminar note and books for PNF international course. Results : The PNF exercise was efficient at improving flexibility and muscle strengthening in Taekwondo athletes. Kinematic characters of Yupchagi and Dollyuchagi in Taekwondo were analogous to Lower extremity Flexion-Abduction-Internal Rotation patterns in PNF, and the kinematic character of Apchagi was to analogous to Lower extremity Flexion-Adduction-External Rotation pattern in PNF. Movements of Upper extremities and Lower extremities during kicking were similar to PNF patterns. The PNF is efficient at improving athletic performances and the ability of exercise capacity in Taekwondo. Conclusion : The result of this study showed that PNF patterns and kicking that is one of the basic movement in Taekwondo have many similarities. With that PNF patterns was the training methods to improve flexibility and muscle strengthening, PNF patterns are considered to improve athletic performances and the ability of exercise capacity in Taekwondo.

• 대한인간공학회지
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• 제21권3호
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• pp.1-12
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• 2002

Recently, EEG gains much interests due to its applicability for people to communicate directly with computers without detouring motor output. This study was designed to address this issue if EEG can be successfully used to predict limb movement. It was found that ordinary people appeared to show significant difference in brainwaves between right hand (foot) and left hand (foot) movement. Lateral asymmetry was also found to interact significantly with EEG. Further research is urged with refined method to provide more useful insights into EEG-based BCI.

• 한국산업경영시스템학회:학술대회논문집
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• 한국산업경영시스템학회 2002년도 춘계학술대회
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• pp.291-296
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• 2002

The midsole hardness of athletic footwear affects capability of absorbing impact shock and controls rearfoot movement during running and walking. The prior studies were focused on examining the proper hardness of footwear for rearfoot movement or to finding effective hardness for absorbing impact shock. The displacements of maximal Achilles tendon angle described a amount of pronation motion is decreased when medial hardness of midsole is large more than lateral. Increasing hardness of footwear midsole are effected to reduce maximum and intial pronation angle, but declined the ability of impact shock during heelstrike. For determination of effectiveness hardness of midsole, therefore, the study that makes a compromise between rearfoot movement and absorbing impact during footstrike must be performed. The purpose of this study is to examine quantitative values of rearfoot control and absorbing impact shock with different hardness of medial and lateral midsole on heel portion. The results are useful to define biomechanical hardness of midsole for developing running shoes. As variable for impact shock, accelerations onto shank and knee are measured during 4 running speeds (5, 7, 9, 11km/h). Also, maximum and $10\%$ pronation angle (Achilles tendon angle) were measured using high-speed camera.

• 한국의상디자인학회지
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• 제7권1호
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• pp.55-63
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• 2005

The outcome of modem sports events are reliant on not only the athletic ability and technology of individual players but their sportswear proterties. State-of-the-Hitech sportswear has started to be introduced in the 1950s, and in addition to the athletic capability of players, sportswear is one of the primary factors to affect the results of sports games, as a wide variety of Hi-Tech functional materials have come out since the 1990s. The purpose of this study was to development into the concept of active sportswear, to sort out hitech functional product lines in this field, to look into sports stars and Hi-Tech functional sports brands, and finally to identify the major characteristics of recent active sportswear. The result of this study were as follows: 1. There were largely four characteristics in recent functional sportswear materials: fast-drying cooling, minimized resistance, ultralight comfortableness, and water vapor permeable/waterproof function. 2. Besides the athletic capability and technology of players, Hi-Tech functional products are one of the major factors to determine the outcome of modem sports events. Functional synthetic fiber is preferred, instead of cotton, since the former is easier to manage and retains humidity better. 3. The major features of recent trend in active sportswear products are, functional, diversity and value. That is, those products are functional, since they are easy to manage and retain proper humidity, and they are for multipurpose, since they are fashionable and practical at the same time. And they are valuable, being expensive but appropriate for the movement of the body and having a high quality.

• 수산해양교육연구
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• 제27권2호
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• pp.537-545
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• 2015

The purpose of this study is to investigate how effects creatine dosage has on the improvement of rowing athletes' performance ability. Rowing athletes were administered with creatine, through which to examine the change of athletic performance ability, blood fatigue substances, and muscular activity. The subjects (participants) of this Study consisted of 12 male rowing athletes at P University, with at least 5 years of rowing experiences, which divided into two groups - creatine dosing group of 6 persons and control group of 6 persons - for random sampling measurement. Enzymatic-colorimetric method using lacrate oxidase and 4-aminoantipyrine was performed for blood lactate level analysis, and wireless EMG system (QEMG-4: Lxtha Korea) for muscular activity analysis, with 4 channels set for data analysis. As body parts to be measured, two muscular parts - latissimus dorsi and lumbar spinel - were chosen. Then, on the 5th day from the date of administering them with creatine (that is, 4 days after dosing them with creatine), rowing movement with the highest level of activity was calculated as peak value, which was measured twice. The test data used for this Study were SPSS/PC 18.0, pre-movement and post-movement two-way ANOVA for repeated measurement for comparative analysis of each muscle, with significant level at .05. As a result, the change of blood lactate level was significantly higher in creatine dosing group than in non-dosing group (p<.05). As for the change of muscular activity, both latissimus dorsi and lumbar spinel showed a significantly higher change of muscle in creatine dosing group than in non-dosing group (p<.05 and p<.05, respectively).

• Journal of Preventive Medicine and Public Health
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• 제4권1호
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• pp.1-18
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• 1971

Eleven nonathletes and eleven athletes were exercised on a standardised Harvard step test, and the average rate of change in QRS amplitude in lead III of the electocardiogram associated with heart rotation and the average change in rate of heart beat were observed. 1. After the Harvard step exercise, the average rate of change in QRS amplitude in lead III of both groups increased. This was due to the clockwise rotation of the heart and was associated with respiratory movement. The diaphragm was inferred to remain for a while in a relatively more inspiratory position. 2. After the Halved step exercise, a high correlation between the recovery of the average rate of change in QRS amplitude in lead III and the average change in rate of heart beat was observed in the athletic group. 3. In the nonathletic group there was no significant correlation between the average rate of QRS amplitude change and the average rate of change of heart beat. 4. Athletes were assumed to be trained to ventilate quickly at their maximum ability, using deep descending movements of the diaphragm and other respiratory musclature. Consequently, the average in rate of heart beat also recovered quickly. 5. Nonathletes were inferred not to have been trained to adjust quickly to ventilate so efficiently with their diaphragm movement and other respiratory musculature, and are characterised by their longer time to complete recovery.

• Archives of Plastic Surgery
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• 제34권4호
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• pp.436-440
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• 2007

Purpose: TRAM flap surgery has settled down as a common method for breast reconstruction after mastectomy. We investigated how TRAM flap surgery influences on the patients' physical movement capability by observing their capability of sit-ups as well as exercises they usually enjoy. Methods: A total of consecutive 375 patients were investigated who had breast reconstruction with unilateral pedicled TRAM flap surgery at Asan Medical Center from July 2001 to August 2005. The patients were asked to sit up right before the surgery and do it again 6 months later and 1 year later. 221 patients were followed up 6 month after the surgery. And 132 patients were followed up 1 year after the surgery. In addition, 155 patients who used to exercise before the surgery were also asked to show us the change in their physical movement capability one year after their surgery. Results: 139 patients showed decrease in the counted number of sit-ups, 48 increase, and 34 showed no change between 6 months in the first group of 221 patients. Among the second group of 132 patients, 64 showed decrease, 39 increase, and 29 no change a year later. There was a statistical significant decrease in the number of sit-ups between pre-operation and six months later and between pre-operation and one year later. According to the research on the exercise that 155 patients participated, 3 of them showed improvement in athletic ability, 7 showed decrease, while the rest, 145 patients, showed no change at all. Conclusion: Considering no difference in usual exercise ability, some patients' increase in the number of sit-ups and the effect of anticancer treatment, we found that the loss of abdominal wall function on this research is not too serious to exclude TRAM flap surgery in the field of breast reconstruction

• 인지과학
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• 제29권2호
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• pp.121-135
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• 2018

무용수의 움직임은 시각적 처리 과정을 통해 관찰자에게 지각되며, 관찰자는 지각된 시각정보를 바탕으로 무용수의 동작에 대한 평가와 감상을 수행한다. 관찰자의 운동수행능력이 정확한 평가와 감상에 필요한 것인지에 관해 많은 논의가 있으나, 일관된 결론을 내리지 못하고 있다. 이에 본 연구에서는 타인의 동작결과를 예측하는 능력이 관찰자의 운동 숙련성에 따라 어떻게 달라지는지 살펴보고자 하였다. 연구참여자는 총 27명으로 무용 숙련도에 따라 세 집단(숙련자, 중간숙련자, 초보자)으로 각 9명씩 참여하였다. 연구참여자는 컴퓨터 모니터를 통해 제시되는 무용 동영상을 본 후 동작의 성공 여부에 대해 판단하였다. 영상의 길이를 달리 편집하여 동작의 성공 여부를 판단하는데 필요한 정보의 양을 체계적으로 조작하였으며, 시간차단 기법을 사용하여 영상 길이 조건별 연구참여자의 반응 정확도를 측정하였다. 연구결과 판단을 위해 활용할 수 있는 시각적 정보가 충분하지 않은 조건에서 숙련자들은 중간숙련자와 초보자에 비해 더 높은 정답 반응을 나타냈으며 초보자는 숙련자와 중간숙련자에 비해 더 높은 오답 반응을 나타내었다. 이러한 결과는 비슷한 수준의 지각 숙련성을 보유하고 있더라도 동작 숙련성에 따라 무용동작에 대한 결과예측 능력이 차이를 보이며, 높은 운동 숙련성을 가지고 있는 경우 동작결과에 대한 예측 능력이 높다는 것을 보여준다. 또한 높은 지각 숙련성은 주어진 정보가 불충분한 상황에서 성급한 반응을 유보하여 오답률을 낮추는 데 도움을 주는 것으로 생각된다. 결론적으로 본 연구를 통해 동작 숙련성과 지각 숙련성은 관찰된 동작의 결과예측 정확성에 각각 다른 방식으로 기여하고 있음을 알 수 있었다.

• 대한통합의학회지
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• 제9권3호
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• pp.111-124
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• 2021

Purpose : The purpose of this study is to evaluate whether physical ability is improved by body stabilization, develop training methods to improve physical fitness factors suitable for body conditions, and provide future management and exercise materials to improve Taekwondo athletes' performance, after conducting the Body stabilization exercise (BSE) program on 22 elementary school Taekwondo athletes for 10 weeks to strengthen core muscles and evaluating Visual response speed test (VRST), Functional movement screen (FMS), Y-Balance test (YBT) and Vital capacity (VC). Methods : In order to examine the impact of the BSE program on Taekwondo athletes' VRST, FMS, YBT and VC this study conducted individual evaluations on all subjects, including VRST, FMS, YBT and VC before applying the programs, and compared exercise effects before and after the program, before and after exercise by a certain period. Results : After exercising, strength and quickness were improved significantly and reaction time was significantly shortened (p<.001). The total score of FMS was improved from 10.86±1.17 before to 11.68±0.99 after exercising, was statistically significant (p=.014). YBT was significantly improved from 91.11±4.84 before to 95.68±5.15 after exercising (p<.001). VC improved was statistically significant (p<.001). Conclusion : In conclusion, the BSE athletic program is expected to help Taekwondo athletes perform well by preventing and reducing injuries through the improvement of muscular strength, strength, speed, agility, step, kick, balance, flexibility, full body endurance and the combination of technical abilities.