I had them who are 10 male business badminton team players and 10 male high school badminton players try the badminton smash motion in this study, and analyzed the kinematic factors by 3-dimension cinematography. The conclusions were follows. 1) It was shown that there is no significant difference i...
I had them who are 10 male business badminton team players and 10 male high school badminton players try the badminton smash motion in this study, and analyzed the kinematic factors by 3-dimension cinematography. The conclusions were follows. 1) It was shown that there is no significant difference in the aspects of right wrist joint angle between skilled group and unskilled group according to badminton smash motion when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was 57.52±16.82˚ and unskilled group was 38.62±17.15, in the level of p < .05 in only Follow through. There is no significant difference in angle speed. 2) It was shown that there is no significant difference in the aspects of right elbow joint angle between skilled group and unskilled group according to badminton smash motion when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was 139.92±7.82˚ and unskilled group was 157.11±17.34, in the level of p < .05 in only Follow through. There is no significant difference in angle speed. 3) It was shown that there is no significant difference in the aspects of right shoulder joint angle between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was -7.27±3.32rad and unskilled group was -3.24±3.32rad, in the level of p < .05 in only Follow through. 4) It was shown that there is no significant difference in the aspects of right knee joint angle between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Impact and Follow through. However there is significant difference between two groups, skilled group was 8.35±4.20rad and unskilled group was .41±5.82rad, in the level of p < .05 in only Backswing. 5) It was shown that there is no significant difference in the aspects of the racket and the angle of arm between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Impact and Follow through. However there is significant difference between two groups, skilled group was -18.67±5.25rad and unskilled group was -8.80±9.09rad, in the level of p < .05 in only Backswing. 6) It was shown that there is no significant difference in the aspects of the angle of front and back in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. 7) It was shown that there is no significant difference in the aspects of the angle of the pivot of trunk velocity in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. 8) It was shown that there is no significant difference in the aspects of action angle of each segment in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. Skilled group was faster unskilled group was about 0.03 second from Take-off to Backswing. Skilled group was faster than unskilled group 0.01 second from Backswing to Impact. Skilled group was faster than unskilled group about 0.06 second from Impact to Follow through. 9) It was shown that there is no significant difference in the aspects of action velocity of each segment in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. Skilled group was faster than unskilled group about 0.03 second from Take-off to Backswing. Skilled group was faster than unskilled group about 0.01 second from Backswing to Impact. Skilled group was faster than unskilled group about 0.06 second from Impact to Follow through. In conclusion, it was found that skilled subjects have to extend the range of their movements larger than unskilled subjects and have to promote efficiency of the levers of the human body. Skilled subjects have to do their best to get a big angle and it was found that it is the warming up movements enduring strong impact. When they try impact with big angle speed and relax the angle speed slowly, fast movement from Take-off to Follow through is technical movement for accuracy about target direction and accident prevention of each joint.
I had them who are 10 male business badminton team players and 10 male high school badminton players try the badminton smash motion in this study, and analyzed the kinematic factors by 3-dimension cinematography. The conclusions were follows. 1) It was shown that there is no significant difference in the aspects of right wrist joint angle between skilled group and unskilled group according to badminton smash motion when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was 57.52±16.82˚ and unskilled group was 38.62±17.15, in the level of p < .05 in only Follow through. There is no significant difference in angle speed. 2) It was shown that there is no significant difference in the aspects of right elbow joint angle between skilled group and unskilled group according to badminton smash motion when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was 139.92±7.82˚ and unskilled group was 157.11±17.34, in the level of p < .05 in only Follow through. There is no significant difference in angle speed. 3) It was shown that there is no significant difference in the aspects of right shoulder joint angle between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Backswing and Impact. However there is significant difference between two groups, skilled group was -7.27±3.32rad and unskilled group was -3.24±3.32rad, in the level of p < .05 in only Follow through. 4) It was shown that there is no significant difference in the aspects of right knee joint angle between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Impact and Follow through. However there is significant difference between two groups, skilled group was 8.35±4.20rad and unskilled group was .41±5.82rad, in the level of p < .05 in only Backswing. 5) It was shown that there is no significant difference in the aspects of the racket and the angle of arm between skilled group and unskilled group according to badminton smash motion. There is no significant difference in angle speed when Take-off, Impact and Follow through. However there is significant difference between two groups, skilled group was -18.67±5.25rad and unskilled group was -8.80±9.09rad, in the level of p < .05 in only Backswing. 6) It was shown that there is no significant difference in the aspects of the angle of front and back in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. 7) It was shown that there is no significant difference in the aspects of the angle of the pivot of trunk velocity in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. 8) It was shown that there is no significant difference in the aspects of action angle of each segment in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. Skilled group was faster unskilled group was about 0.03 second from Take-off to Backswing. Skilled group was faster than unskilled group 0.01 second from Backswing to Impact. Skilled group was faster than unskilled group about 0.06 second from Impact to Follow through. 9) It was shown that there is no significant difference in the aspects of action velocity of each segment in the level of p < .05 between skilled group and unskilled group according to badminton smash motion. Skilled group was faster than unskilled group about 0.03 second from Take-off to Backswing. Skilled group was faster than unskilled group about 0.01 second from Backswing to Impact. Skilled group was faster than unskilled group about 0.06 second from Impact to Follow through. In conclusion, it was found that skilled subjects have to extend the range of their movements larger than unskilled subjects and have to promote efficiency of the levers of the human body. Skilled subjects have to do their best to get a big angle and it was found that it is the warming up movements enduring strong impact. When they try impact with big angle speed and relax the angle speed slowly, fast movement from Take-off to Follow through is technical movement for accuracy about target direction and accident prevention of each joint.
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