Double dynamical take-off technique theory and experiments research of fosbury flop high jump

 

Introduction:

Supreme advantage of Fosbury flop high jump is increase the purpose of take-off that can most utilize speed of run up. the aim is increasing the speed of run up alone the arc line. the investigation through the analysis on the technique structure of Chinese best Fosbury flop high jump athletes, and practice the technique in high jump teaching and training for many years.

Methods:

Using the high-speed photographer, research and analysis on the take-off technique of Chinese best Fosbury flop high jump athletes. training on 7 master sportsman and 16 stair sportsman in many years

Results:

The take-off phase of Fosbury flop high jump is from the last step at run up when the swing leg upright to the jump leg take off the ground, through the "two support" and "two swing" and "one short time take -off". the jump is "double dynamical" that two legs both play the function. the most advantage of Fosbury flop high jump is economically depress and hoist gravity of body at run up along the arc phase, and creative the advantage for the change the direction movement of body gravity and cumulating of upright velocity. after the training practice, the atheles can take the achievement of 220 cm, the average height preponderate body height of the athletes over 30-40cm.

Discussion:

The take-off technique of Fosbury flop high jump is "double dynamical" take-off. At the last step take-off phase in run up alone the arc, for the inertia of run up and the athletes body change from inner incline to upright, the body gravity not depress instead of hoist. creative the advantage for the change the direction movement of body gravity and cumulating of upright velocity.the faster of take-off speed at run up alone the arc, the faster of the body gravity raising speed and range when the body gravity change from inner incline to upright. the raising upright speed is accelerate at the body gravity raising phase

 

References:

[1]. Bin su, yilin lu. Journal of guangzhou physical education institute. Volume 18,104-108.

[2]. Shouzheng sun, eryu bai. Journal of Beijing physical education nomal college. Volume 22,36-38.