Basic Bio-Mechanics For Long Jumping

All jumps trains and jumpers need to have some understanding of basic bio-mechanical principles. It helps in the knowing as well as understanding of the occasion.

1. STRAIGHT SPEED

In theory this would indicate that the greater the sprint speed we could get in the method run, the greater will be the speed and also therefore the range. We do require height in the air in order to get the finest liftoff angle and also this means we need to have time to create enough force for some vertical velocity too.

Several more youthful jumpers are UNABLE to create this upright element if they run as well fast and produce a reduced skimming jump, achieving much less distance compared to they would have if they had run much more gradually or with a much shorter run up.

2. TRANSFER OF RATE

In lengthy leaping, the PLACING of the jumping foot significantly ahead of the centre of gravity does cause the reducing of the horizontal speed. This reactive pressure is soaked up by the sustaining leg, and, if strong enough, is returned as springtime, currently partly upright, right into the air.

In order that this change could occur, lengthy jumpers tend to sink down somewhat on the last yet one stride and tend to gain time for a higher impulse because of this, in addition to making the switch of the velocity from horizontal to upright much easier to acquire.

An INDIVIDUAL OBSERVATION: In my point of view based upon training leaps for 30 plus years this ‘sinking’ takes place normally and ought to not be trained. Having observed as well as filmed/videoed numerous jumpers throughout this last three strides to the liftoff board, this sinking happens without any wonderful idea from the jumper. The sink is a natural reaction when preparing to direct all the straight rate obtained on the runway right into a vertical impulse.

3. FORCE APPLIED

The short time that a lengthy jumper carries the board limits his/her ability to establish power. This 0.11-0.13 of a 2nd is ‘all the time’ they need to establish upright pressure by expanding the assistance leg and also ankles, as well as in which to create force from a solid thrust-up of the totally free upper leg and also the counterbalancing arm.

A lengthy jumper needs quick reactions of the nerve system to pass on an upright impulse in so short a touchdown time.

KEEP IN MIND: Once a certain drill has actually been introduced, practiced as well as recognized, any short strategy job done from 4-10 strides NECESSITY be done a broadband. This will certainly have the impact of educating the body’s nerve system to respond really rapidly in a short time period.

4. TRANSFER OF ENERGY

The parts of the body [limbs] can create energy [mass x speed] in an offered instructions which could be passed on in quantity and also direction to the body as a whole. For lengthy leaping the time we touch with the ground at take-off is so brief that we should use faster, shorter bars so we shorten the moment arm using bent-knee swings and normally bent-arm swings. Brief bars fast and also dynamic although a long lever is more effective yet not necessarily quicker.

5. ANGLE OF FORECAST

The angle on the Long Jump Runway is a concession in between the requirement for straight speed and also the requirement for elevation. The straight rate lowers the moment on the board and for that reason the moment to acquire height. When it comes to the more youthful jumper, too much speed is typically the root cause of inadequate leaping because there is little or no time at all to obtain the optimal liftoff angle.
We are looking at angles of between 18 ° and 22 °. This angle is measured from the C of G.

6. UPRIGHT ELEVATION OF THE CENTRE OF GRAVITY

Theoretically this should go to its maximum so that call with the ground is shed as the C of G passes over the supporting foot. THIS NEVER OCCURS. The faster the technique the more likely the C of G is to be before the assistance foot and thus lower than maybe.

Certainly, a taller jumper has a benefit. All motions which increase limbs at take-off raising the C of G additionally. So a fully extended as well as raised lead leg, a high upward drive of the cost-free thigh and also arms well elevated up are aiding here.

AFTERTHOUGHT:

I really feel that it is essential that a horizontal dives trainer understand these basic bio-mechanical principles. An understanding of them could just enhance the training procedure.

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