How to calculate a curved 8 stride high jump run-up for the flop technique.
1 Curve length
2 Take-off position
3 Take-off angle
Are all important in a good run-up. This video shows how to measure the average curve thength. Then using the calculation programme the correct dimensions can be measure and marked out.
[youtube=http://www.youtube.com/watch?v=ezLnSF6xj7o]
VIDEO DOWNLOAD 15 Mb
Using the Excel file change the numbers in the red boxes. Use the technique in the video to measure straight and curve length. A good take-off angle is 30 - 35 degrees, below 30 increases the risk of medial ankle injury. The take-off position depends on run-up speed and the bar height. Higher speeds (7.5 m/s +) and bars (2.20m +) require a take-off position over 1m out from the bar (position 'y')and less than 30cm from the end of the bar (position 'x'). Junior jumpers should practice jumping from approx. x = 0,35m y = 0, 70m. This position should be decided by a high jump coach or using video analysis.
The resulting figures are the measurement where the run-up markers should be placed to visually guide the athlete through the predetermined and practiced run-up.
No comments:
Post a Comment