간행물
한국스포츠심리학회지 KCI 등재 Korean Society of Sport Psychology (KJSP)
- 발행기관 한국스포츠심리학회
- 자료유형 학술지
- 간기 계간
- ISSN 1226-685X (Print)
- 수록기간 1990 ~ 2023
- 주제분류 사회과학 > 경영학 사회과학 분류의 다른 간행물
- 십진분류KDC 692DDC 796
권호리스트/논문검색
제29권 제3호 (2018년 8월) 22건
21.
2018.08
서비스 종료(열람 제한)
Purpose: The possibility of interaction between physical and mental fatigues was investigated in this study. Should any interaction between the physical and psychological fatigue takes place, it must accompany the changes in the brain. Therefore, the level of central activation ratio (central fatigue) has been measured as a function of monetary reward to elicit the extrinsic motivation. Methods: Twenty four healthy young male subjects performed quadriceps isotonic extensions until they experience the muscular fatigue. Then, the notification of the monetary reward depending on the level of extension force for the next 3 attempts were given to the experimental group, while no such information was given to the control group. During these post-fatigue isometric maximum voluntary contraction trials, the transcranial magnetic stimulation was delivered on the motor cortex to measure the central activation ratio. Two-way repeated ANOVA were performed. Results: Pre- vs. Post-fatigue comparisons confirmed that the subjects regardless of the group experienced the peripheral fatigue although the level of peripheral fatigue was less pronounced in the group with extrinsic motivation. On the other hand, the central activation ratio of the extrinsic motivation group did not displayed any decrease as the control group did. Conclusion: The results from this study provided an evidence showing the effects of motivation on the muscular fatigue. What’s intriguing is, however, the level of fatigue at the brain level showed no significant sign of fatigue when the monetary reward was suggested. It is presumable to suggest that the high motivation made our subjects prone to the central fatigue, and such effects might have decrease the peripheral muscle fatigue in turn.
22.
2018.08
서비스 종료(열람 제한)
Purpose: The purpose of this study was to investigate the effect of attentional focus instructions on movement patterns in a ballet pirouette task. We were also interested on how the effects will apply in different skill levels: professionals and amateurs. Methods: Four amateur dancers (1-3 years of experience) and four professional dancers (more than 9 years of training) participated in this experiment. All were asked to perform a single pirouette turn on the non-dominant(left) side. Each dancers had 5 trials for each of the following three instructions: non-focus instruction (turn as you usually do), internal focus instruction (stretch your standing leg vertically, making a consistent turn-out with the working leg, make your head remain to the front as long as possible), and external focus instruction (push against the ground with your standing leg” and “imagine that your body spirals up to the ceiling”, and “try to keep gazing at a spot until you have to turn your head”). Data were collected with motion analysis systems having 10 cameras. We analyzed the qualitative change in individual movement patterns on each three conditions. Results: Professional dancers did not show any difference from the contrasting instructions. However, the amateur dancers showed varieties according to different focus instructions. For amateur dancers, it was possible that internal focus instructions as well as external focus gave positive effects. Conclusion: In order to apply these research findings, further research is needed with more challenging task in professional dancers. Moreover, individual tendencies on using attentional focus when learning and enhancing dance techniques should be clarified.
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