Basic Bio-Mechanics For Long Jumping
All jumps instructors and jumpers ought to have some understanding of basic bio-mechanical concepts. It aids in the learning as well as understanding of the occasion.
1. STRAIGHT VELOCITY
Theoretically this would mean that the better the sprint rate we could obtain in the approach run, the better will be the velocity and also therefore the range. We do need height in the air in order to obtain the finest take-off angle as well as this suggests we should have time to create sufficient pressure for some upright speed also.
Numerous younger jumpers are UNABLE to create this upright part if they run as well quick as well as produce a reduced skimming jump, accomplishing less distance compared to they would have if they had actually run much more slowly or with a shorter run up.
2. TRANSFER OF RATE
In long leaping, the PLACEMENT of the leaping foot significantly in advance of the centre of gravity does result in the decreasing of the straight speed. This reactive force is absorbed by the sustaining leg, as well as, if solid sufficient, is returned as spring, now partly vertical, right into the air.
In order that this shift could occur, lengthy jumpers have the tendency to sink down a little on the last however one stride and also have the tendency to obtain time for a better impulse as a result, along with making the change of direction of the speed from horizontal to upright less complicated to achieve.
An INDIVIDUAL OBSERVATION: In my opinion based on coaching leaps for 30 plus years this ‘sinking’ takes place naturally and also need to not be coached. Having actually observed as well as filmed/videoed many jumpers during this last three strides to the take-off board, this sinking takes place with no fantastic idea from the jumper. The sink is an all-natural reaction when preparing to transport all the horizontal velocity attained on the path right into an upright impulse.
3. REQUIRE APPLIED
The brief time that a long jumper has on the board limits his/her ability to create power. This 0.11-0.13 of a 2nd is ‘at all times’ they need to create upright force by prolonging the support leg as well as ankle joints, and also in which to produce pressure from a solid thrust-up of the free thigh as well as the reversing arm.
A long jumper requires quick reactions of the nerve system to present an upright impulse in so brief a touchdown time.
KEEP IN MIND: Once a specific drill has actually been presented, exercised as well as comprehended, any type of brief strategy job done from 4-10 strides NECESSITY be done a broadband. This will have the effect of informing the body’s nerve system to react extremely promptly in a brief amount of time.
4. TRANSFER OF ENERGY
The parts of the body [limbs] can generate energy [mass x velocity] in a provided instructions which can be given in amount and instructions to the body all at once. For lengthy jumping the time we touch with the ground at take-off is so brief that we must utilize much faster, much shorter bars so we shorten the moment arm using bent-knee swings and usually bent-arm swings. Brief bars are quick and also vibrant although a lengthy bar is much more powerful but not necessarily quicker.
5. ANGLE OF ESTIMATE
The angle on the long dive is a compromise between the demand for straight speed and also the requirement for elevation. The horizontal speed decreases the time on the board as well as consequently the time to obtain elevation. When it comes to the younger jumper, excessive rate is often the cause of bad jumping because there is little or no time at all to obtain the optimal take-off angle.
We are looking at angles of between 18 ° as well as 22 °. This angle is measured from the C of G.
6. VERTICAL HEIGHT OF THE CENTER OF GRAVITIES
In theory this should go to its maximum to make sure that contact with the ground is shed as the C of G overlooks the sustaining foot. THIS NEVER TAKES PLACE. The faster the method the more probable the C of G is to be before the assistance foot and also thus below maybe.
Certainly, a taller jumper has an advantage. All motions which increase arm or legs at take-off raising the C of G additionally. So a totally extended and also increased lead leg, a high upward drive of the complimentary upper leg as well as arms well raised up are aiding here.
I actually feel that it is very important that a straight jumps coach understand these basic bio-mechanical concepts. An understanding of them can only boost the training process. Read more about Long Jump Installers by visiting our website.