Manual DKN XG-5 (page 24 of 60) (English, German, Dutch, French, Italian, Spanish)

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All you need to know

WHOLE BODY VIBRATION: How it works

The Plate produces a vibration through which energy is

transferred from the platform to the body. By standing on

the Plate, your body automatically adjusts to the vibrations.

Remember that human bodies are made to absorb vertical

vibrations due to gravity acceleration effect. This

mechanical stimulus produces an involuntary stretch reflex

which, depending on the selected frequency, results in

muscles vigorously contracting 30 to 50 times per second.

The mechanical stimulation generates acceleration forces

working on the body. These forces cause the muscles to

lengthen, and this signal is received by the muscle spindle,

a small organ in the muscle. This spindle transmits the

signal through the central nervous system to the muscles

involved. It is described as Involuntary. Neuromuscular

stretch reflex

Basically the Whole Body Vibration platform recreates the

muscle stretch reflex according to the following process:

1. Stimulus: a tap on tendon causes a muscle stretch

reflex

2. Receptor:

the receptors in muscles and joints note this

shift in length

3. Spinal cord: they pass the information on to the spinal

cord

4. Brains: The response to this sensory stimulus via the

spinal column is a direct contraction of the stretched

muscle. The brain is not directly involved in this process.



Immediate and short term effects of WBV

Because more muscle fibers (also known as motor units)

are activated under the influence of vibration than in

normal, conscious muscle contractions the muscles are

incited more efficiently. The immediate effect of WBV is

therefore that the muscles can be used quickly and

efficiently, allowing them to produce more force.

Another immediate effect of WBV is an improvement of

blood circulation. The rapid contraction and relaxation of

the muscles at 20 to 50 times per second basically works

as a pump on the blood vessels and lymphatic vessels,

increasing the speed of the blood flow through the body.

Subjects often experience this as a tingling, prickling,

warm sensation in the skin.



Long term effects of WBV

In order to have any effect on the body in the long term it is

vital that the body systems experience fatigue or some sort

of light stress. As in other kinds of training, when the body

is overloaded repeatedly and regularly, the principle of

super compensation

will occur. This principle is the

cause of the body adapting to loading. In other words:

performance will increase.

This effect has been proven several times in scientific

research for both young and elderly subjects. Studies have

shown that using WBV leads to a significant increase in

strength. This is a clear indication that the vibrations

actually do have added value when performing static

exercises. Better results may even be achieved with WBV

in the area of

explosive power.

This graph shows the gain in maximal strength attained by

professional and casual athletes after training 2/3 times a

week for a period of 6 weeks on a Whole body vibration

platform. Strength is considerably improved after the

vibration training for the 6 exercises tested & the results

are even higher for the professional.

Another important difference between conventional training

methods and WBV is that there is only a minimum of

loading. No additional weights are necessary, which

ensures that there is very little loading to the passive

structures such as bones, ligaments and joints. That is

why WBV is extremely suited to people that are difficult to

train due to old age, disease, disorders, weight or injury.

On the other hand, it is also very suitable for professional

athletes who want to stimulate and strengthen their

muscles without overloading joints and the rest of the

physical system.

Other than its influence on the muscles, WBV can also

have a positive effect on bone mineral density. The

vibrations cause compression and remodeling of the bone

tissue Mechanostat, activating the osteoblasts (bone

building cells), while reducing the activity of the osteoclasts

(cells that break bone down). Repeated stimulation of this

system, combined with the increased pull on the bones by

the muscles, will increase bone mineral density over

time. It is also likely that the improved circulation and the

related bone perfusion due to a better supply of nutrients,

which are also more able to penetrate the bone tissue, are

contributing factors.

Joints Mechanoreceptors

Vibratory Stimulus

Motor

Higher Centers

4. Brains

2.Recepto

3.Spinal

Cord

1.Stimulu

Muscle

Gain in Maximal Strength (%)

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DKN XG-5 Manual

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