Manual Kettler Run 7 - 07883-600 (page 16 of 84) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Spanish)

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iomechanics

Phase Beginning End Hints /

escription of movement

Biomechanics - treadmill

Form of training and execution of movement

On the treadmill the most different forms of training can be exe-

cuted, from walking to running to sprinting. The execution of

movement of walking, running and sprinting is divided into four

phases:

Front swing phase Support leg under the

body's centre of gravity

Touching the ground

with the foot

Here the knee is maximally lif-

ted and the leg is mainly

swung forwards. When tou-

ching the ground with the foot

the lower extremities will be

cushioned within a period of

10 - 20ms by a passive dece-

leration movement.

Front support phase Touching the ground with

the foot

Vertical posture

Touching the ground with the

foot causes forces which are 2

to 3 times higher than the

body weight. Therefore you

should make sure to wear the

suitable shoes in order to ade-

quately absorb the arising for-

ces and guarantee a healthy

pronation of the foot.

Rear support phase Vertical posture Pushing off from the

ground with the foot

In the final phase the foot is

straight and pushed off from

the ground via the first toe

Rear swing phase Pushing off from the

ground with the foot

Vertical posture

Running styles

The motion sequences while running cannot be standardised

and therefore the choice of the economic running style is very

individual and significantly depends on the running speed and

the physical constitution. One distinguishes between different

types of touchdown of the heel.

• Touchdown of the front foot: Initial floor contact starts with

the front foot. The knee is slightly bended when the foot hits

the ground and therefore a major part of the arising forces is

cushioned via the muscular system.

• Touchdown of the rear foot: Initial floor contact starts with the

heel. The knee is almost stretched when the heel hits the

ground and the movement is cushioned by the passive loco-

motor system and the shoes.

• Touchdown of the midfoot: Initial contact with the ground via

the midfoot Combination from touchdown of front and rear

foot.

It is a fact that an economisation of the running technique pre-

vents early fatigue and injuries and that the biomechanical

requirements during running and the occurring forces depend on

the following points:

• Running speed

• Floor conditions / route profile

• Physical constitution

• Running technique

• Shoes

• Statics of the lower extremities

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Kettler Run 7 - 07883-600 Manual

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