High Jump Fosbury Flop
The high jump comprises of three phases:- approach, take off and the flight.
The Approach
Factors to look for in the approach:| 2 or 4 stride lead into a checkpoint | |
| non take off foot hits this checkpoint | |
| followed by a curved 5 stride approach to the take off point | |
| in the last 3 to 4 strides the athlete is inclined away from the bar | |
| final strides to be fast and hips kept high |
Take off
Factors to look for on take off:| take off point is approx 0.5 metres to 0.75 metres from the near upright along the bar and out from the bar | |
| take off foot is slightly ahead of the athlete's body | |
| take off foot plant is heel first to provide the maximum lever | |
| take off foot is pointing towards a position halfway between the middle of the bar and the far upright (10° to 20°) | |
| take off foot is in alignment with the take off leg | |
| hips are forward | |
| inside shoulder is high | |
| the trunk is upright and leaning slightly back - not leaning towards the bar | |
| hips are at 45° to the bar and the shoulders at 90° | |
| there is quick and vigorous movement of free limbs | |
| the inside shoulder does not drop in towards the bar | |
| rotation comes from the non jumping side i.e. the free leg and shoulder pulling across the body | |
| the leg nearest the bar is driven up bent and high at the opposite upright, thigh and foot parallel with the ground and lower leg vertical | |
| both arms are swung forwards and upwards with the free leg |
Flight
Once off the ground factors to look for in the flight:| inside knee stays up at bar level | |
| heels are pulled back towards the head (arching the back) | |
| knees bent and wide apart | |
| arms in a crucifix position or held by the side | |
| head back and looking towards the far back corner of the mat (forces the hips to stay high) | |
| once the hips are over the bar the legs are snapped straight from the knees | |
| landing on the shoulders |
High Jump Drills
In all drills stress "Trunk upright, hips forward and head high".| 2 × 20m walking - lifting the heel and stretching the ankle quickly. Walk back to recover. | |
| 2 × 20m bouncing ankle extension | |
| 2 × 20m bounding arm drill | |
| 5 × 3 or 5 stride vertical jump drill (ankle extension, free knee drive, arm action) | |
| Three stride practice jumps, concentrating on specific body parts (5 to 10 jumps). |
High Jump Photo Sequence
The photo sequence of Heike Henkel was taken during a competition at Crystal Palace.| Three strides from take off. Leaning into the bend | |
Bouncing run in
| |
3 - Right foot placed out to the side to prevent the hips collapsing prior to take off
| |
4
| |
5 - Left foot heel strike approx one metre from the bar and upright
| |
6 - Lean back
Right shoulder is high Left foot is ahead of the body Hips are forward Hips are at 45° to the bar and the shoulders at 90° Trunk is upright and leaning slightly back Jumping foot is in alignment with the jumping leg | |
7 - flexion in the left leg to allow drive upwards
| |
8 - Right knee and both arms beginning the upward drive
Tall and upright Eyes focused above the bar | |
9 - Left extends
both arms are swung forwards and upwards with the right leg Right hip driven upwards and towards the far upright | |
10 - Rotation of body due to right hip/knee and arm action
Left hip is still extended | |
11 - Left knee is brought up to join the right knee
Back rotates towards the bar | |
12 - Arms remain high
Heels behind the knees Knees apart | |
13 - Arms driven down down to extend hips
heels pulled back towards the head (result in arched back) arms in a crucifix position Knees apart | |
14 - knees kept apart
Heels behind the knees Arms in a crucifix position | |
15 - knees above the hips
Arms in a crucifix position Heels coming in front of the knees to begin the pike position | |
Tidak ada komentar:
Posting Komentar