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RISS 인기검색어
- 검색키워드
- 저자 : 백송원(Baek Song-Won) (검색결과 2 건)
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백송원(Song Won Baek) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.30
The purpose of this study was to analyze lower extremity muscle activities for heel raise during vibration exercise using surface electromyography(EMG). Four collegiate wrestlers were participated in this study and they performed heel rise motion with squat posture on vibration exercise machine. The vibration was activated for 30 seconds randomly to the subjects and the muscle activations were collected for 10 seconds each, with vibration and without vibration, respectively. The selected muscles for EMG were Vastus Lateralis, Biceps Femoris, Tibialis Anterior, and Gastrocnemius. The raw data were band pass filtered to remove noise and full wave rectified. Paired sample t-test were performed to see the differences of maximum and average EMG between non-vibration and vibration trials. The results indicated that all muscle activations with vibration were greater than those of non-vibration. Particularly, the activation of Biceps Femoris with vibration was 59% higher than those with non-vibration. This result implied that vibration exercise device users may consider to perform proper posture for training a certain muscle group and that posture can be applied carefully after pre-test due to the individual differences.
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백송원(Baek Song-Won),김창욱(Kim Chang-Wook) 한국체육과학회 2009 한국체육과학회지 Vol.18 No.2
This research introduced that It can recognize the weight shift type while golf swing and It can understand a special quality of golf swing. When they back swing, right and left weight variation which was showing that the beginning of take away they moved too much weight and the weight variation was reduced at the top of back swing. These cases are from right side movement of swing axis, lower body , and head sway. These effects bring about that they could not make a nomal orbit by the reverse pivot when they down swing. While down swing, It is the best way that they have to move a left foot quickly by lead of lower body. The beginners and plump people could not turn their left foot because the pelvis has slowed. As a special they moved with left foot at the beginning of down swing and they moved weight on the right foot at the impact and then it moved on left foot at follow through. These actual states are from the most young player and a long - ball hitter. It isn't from women's players. Generally, they put their weight in front when they swing. The most people moved the body in front about the weight distribution at backswing top. After follow through, they leap up the upper body behind the left foot quickly so many times.
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