What is a vibration plate? It is a motorized platform that moves very fast while you stand on it, and each small movement makes your leg muscles tighten by reflex. Plates come in two kinds that move differently, linear and oscillating. Lab studies have measured that reflex, and how your stance changes what travels up your body.
How does a vibration plate work?
A vibration plate works through a reflex in your leg muscles. Each tiny movement of the platform stretches those muscles slightly, and they answer by tightening on their own. The platform moves fast, but the muscles respond with a slow, steady tightening. Researchers call this the tonic vibration reflex, and you do not choose to make it.
One small randomized trial showed the reflex directly (Zaidell et al., 2013). It tested 8 healthy men in a lab. They were lying or seated, with one leg pressed against a vibrating plate. Vibration through the feet caused the same reflex as vibrating the Achilles tendon, the cord at the back of the ankle. The men were not standing, so the authors could not say how much standing adds to the reflex.
Some researchers have questioned whether muscle readings during vibration are real. The sensors on the skin shake too, so the signal might just be noise. A second small lab study tested this in 10 people, on four leg muscles (Ritzmann et al., 2010).
The researchers compared the signal with a normal stretch reflex, and the timing was almost the same. It differed by less than 1 millisecond. Pressing on the muscle weakened both signals by a similar amount. Dummy sensors placed nearby picked up only about 7% of the muscle signal. So the authors concluded the signal came from real stretch reflexes.
Your position changes how hard the muscles work. A randomized study measured leg muscle activity in 15 healthy middle-aged and older women (Liu et al., 2022). Holding a half squat with the plate on raised activity in every leg muscle they measured. Moving slowly in and out of the squat raised the measured activity in some muscles even more.
The study in those 15 women measured muscle activity during one session. It did not follow anyone over weeks, so it shows what happens in the moment.
What do frequency and amplitude mean on a vibration plate?
These two settings describe how the platform moves. Frequency is how fast it moves, counted as movements per second and measured in hertz. Amplitude is how far it travels with each movement, measured in millimeters.
In a lab study of 16 adults doing slow squats, the plate ran at 30 hertz, which means 30 movements a second (Abercromby et al., 2007). In that study, the platform moved 4 millimeters each time. So the movement on a plate is small and very fast, closer to a buzz than a bounce.
What does standing on a vibration plate feel like?
You will probably feel a steady buzz coming up through your feet. Your calves and thighs may feel switched on, as if they are working on their own. If you bend your knees, the buzz tends to stay lower in your legs.
After a few minutes, your legs might feel warm. Your feet might tingle a little when you step off.
What is the difference between oscillating and linear vibration plates?
The difference is how the platform moves under your feet. A linear plate, also called a vertical plate, moves the whole platform straight up and down. Both feet rise and drop together.
An oscillating plate, also called a side-alternating plate, pivots in the middle like a seesaw. As one foot rises, the other foot drops. So each leg gets pushed up in turn.
A lab study used both kinds of movement with 16 healthy adults doing slow squats (Abercromby et al., 2007). One setting pushed both feet up at the same time. The other pushed up only one foot at a time. The researchers measured how much movement reached the head with each kind.
Is a vibration plate low impact?
Yes. Your feet stay on the platform the whole time, so you never jump or land.
How you stand changes how much movement travels up your body. A small lab study tested this in 6 healthy adults on three types of vibration machines (Muir et al., 2013). On all of them, bending the knees meant much less vibration reached the head. The authors also urged caution, because some machines shook far harder than international guidance allows.
A lab study of 16 healthy adults doing slow squats on a plate points the same way (Abercromby et al., 2007). Its estimate of how much vibration reached the body was lower in a half squat than when people stood up straight. So a soft bend in your knees changes how the vibration travels through you.
What does a vibration plate do for your body?
In the moment, a vibration plate raises the activity of your leg muscles. Whether that adds up to changes over weeks is a separate question. We cover what trials found for strength, balance and other goals in our guide to vibration plate benefits.
Interactive vibration boards are a related category, explained in what an interactive vibration board is.
We'd start in a half squat on the lowest setting. Pay attention to the buzz in your calves and thighs.
Our own board is one of those interactive plates. Kiwii Move is an interactive whole-body vibration board — a vibration plate with four pressure sensors that turns 10 minutes a day into games you play with your body. You can read more about our interactive vibration board.
Sources
Zaidell LN et al., PLoS One. Experimental Evidence of the Tonic Vibration Reflex during Whole-Body Vibration of the Loaded and Unloaded Leg. 2013. pmc.ncbi.nlm.nih.gov
Ritzmann R et al., European Journal of Applied Physiology. EMG activity during whole body vibration: motion artifacts or stretch reflexes?. 2010. europepmc.org
Liu Y et al., Dose-Response. Effects of Whole-Body Vibration Training with Different Body Positions and Amplitudes on Lower Limb Muscle Activity in Middle-Aged and Older Women. 2022. pmc.ncbi.nlm.nih.gov
Abercromby AF et al., Medicine and Science in Sports and Exercise. Vibration exposure and biodynamic responses during whole-body vibration training. 2007. europepmc.org
Muir J et al., Journal of Science and Medicine in Sport. Safety and severity of accelerations delivered from whole body vibration exercise devices to standing adults. 2013. pmc.ncbi.nlm.nih.gov