VIBRATION TRAINING

Hi,
I have been thinking about Lateral & Frontal plate displacements and freequency lately...
If you have a certain freequency on a uniform vertical displacement plate that is not 100% vertical, than the part of the freequency is accounting for lateral and frontal displacements.
Therefore the vertical displacement is not true to the freequency!
For example, if 80% of the displacement is vertical on 30Hz, than you really only get 24Hz of vertical displacement since you lose the other 20% in lateral & frontal displacents!
If this deduction is true, than this gives us many other questions to answer:
- Does this effect G force?
- Does this loss of freequency effect the myotatic reflex?
- Does 100% vertical displacement demand more neural muscular activity than tri planar dispalcement?
What do you guys think?

Hey hey hey!



This is NOT correct. Let's talk about.

Only fake mechanical vibromassage machines lose frequency!!!! For the engine is really weak, such 200W chinese or some very known 9000 USD wellness center machines... I can't say the name.

Only vertical (or uniform plate magnitude) machines can have triplanar movement, but since the movement is not induced mechanically for the engines are fixed on the plate and for the movement is caused by the rotation of the flywheels, the frequency will never change or decrease. The plate moves because it floats on air or hard rubber joints.

The only thing that can decrease (on uniform machines) is the magnitude for a heavy load (the peak to peak vertical movement) so the G force.

The alternate or reciprocating machine, the serious ones like Galileo, have a 1400 watt to 2100 Watt (2 to 3 horses) engine. The engine is normally used at a 1/5 th of the max power and there is a sensor that pushes on the power when it is needed to maintain constant the frequency. Plus the 2 x 40kg mass rotating flywheels gives the extra kinetic force.

Means that when you step on the machine with 220 lbs or 100kg extra weight, (440lbs to 200kg) you can jump on the machine and it will not lose one Hz!

On the uniform plates machines, those called "vertical" by the vendors (uniform movement all over the plate, should be called) the strength of the vibration is determined by the rotating mass of the flywheels and of the plate's mass. Higher it is higher is the G force stability with heavy loads. Vibrogym EVOLUTION II is a good example of 2mm (MAGNITUDE, I confirm) very stable machine. Such as the Physioplate by Globus.

now details:

For example, if 80% of the displacement is vertical on 30Hz, than you really only get 24Hz of vertical displacement since you lose the other 20% in lateral & frontal displacents!

This is not true on serious reciprocating machines or alternate real VT machines. It is not true on vertical or uniform machines. You dont lose frequency you lose G force or acceleration, eventually for a decrease of the magnitude on vertical machines. You can lose Hz on fake vibromassage weak futile hateful machines from china, but we will never use for therapy or training. I hope any person with brain will never do that.

- Does this effect G force?

On weak powered machines YES, a lot!

- Does this loss of freequency effect the myotatic reflex?

YES, if eventually happen there is a loss of frequency or magnitude there is a decrease of acceleration and magnitude and, since the muscle contraction is engaged by the miotactic reflex, that occurs above a certain G force only it could happen it will not be engaged at all.

- Does 100% vertical displacement demand more neural muscular activity than tri planar dispalcement?

MAYBE NOT, but this is deduction. One thing is using the machine (alternate or reciprocating pivotal) at 6Hz where the brain have to decide what to do to stand and not to fall. Another thing is at 12Hz where is the central neuronal system to react (it is much easy to stay on one feet at 12Hz) an another thing is above 18Hz. Another is above 30 35Hz where the muscle seem not to react to every single input. Looks like at 40Hz the muscle reacts like at 20Hz. The thing is that at 40Hz the G force is higher than at 20Hz so there are many factors...

Too much confusion? Not for me. I thing the best frequency is at 22Hz with a displacement (magnitude) of 7mm peek to peek, with no weights load. Unless you want to bounce and float on the plate.

With weights, let say 40kg 80lbs you can go up to 26Hz with 8mm magnitude and work great. Alternate vibration.

OK? Any other questions?

Ok,
I follow your line of thought.
But I thought that the freequency of a tri planar platform was the sum of the displacement on the 3 axis (Z,X & Y). But you are telling me that the freequency is of the Z plane only.
Is this correct?
Rick

Horizontal movement of the platform don't engage any miotactic reflex. You have to measure on the Z plane or vertical movement to make comparisons. There is full of vibro-massage fake devices with horizontal movement greater than vertical.

In tests on the Power Plate NG it lost almost all amplitude and Fq at 80 kg.

Sasha is correct in saying that the direction of the vibration does not hinder Fq. Only load will do this.