From published research and manufacturer specifications, not from a review unit on my desk. Where I have used something myself, the article says so. Links can earn a commission; the disclosure explains what that does and doesn't buy.
If you read nothing else
- Amplitude between 10 and 16mm and stall force matter more than how many speed settings there are.
- The evidence supports short-term soreness relief and small range-of-motion gains. Not tissue repair.
- A $90 device with honest specs beats a $400 device with a marketing department.
- Never on the front of the throat, directly on the spine, on bony points, or on a swollen calf.
- If you want one recovery purchase, a foam roller costs a sixth as much and has comparable evidence.
The massage gun is the most successful piece of recovery hardware of the last decade, and the category where the gap between the spec sheet and the object is widest. Almost nobody publishes the two numbers that determine whether the thing works.
This is about how to read the category rather than which one to order. I’ve used devices across the price range but not every model, and I won’t pretend otherwise by writing a listicle.
Amplitude
This is stroke length, how far the head travels per percussion, expressed in millimetres. It’s the single best predictor of whether a device feels like therapy or like a toy.
Under 10mm is superficial. Fine for a forearm, useless on a glute. Ten to twelve is the practical minimum for general use. Twelve to sixteen is what you want for larger muscle groups. Above sixteen you get diminishing returns and more discomfort on bony areas.
Plenty of cheap devices advertise 16mm while producing something closer to eight. You can’t verify it from the listing, but you can verify it by sound. A real 12mm stroke at 2,500 percussions per minute produces a distinct low mechanical thud, and you can hear the difference on a video before you buy.
Stall force
How much pressure the motor takes before it stops oscillating. Measured in pounds or kilograms, and published almost never.
A device with high amplitude and low stall force works beautifully in the air and dies the moment you press it into a calf, which is the only thing anyone does with one. If a listing gives you five speed settings and a touchscreen but no stall force, the manufacturer is optimising for the wrong thing.
What the evidence actually covers
Percussion therapy has a real but narrow evidence base. Systematic reviews generally find a small to moderate short-term reduction in perceived soreness after exercise, small temporary increases in range of motion comparable to foam rolling, and no meaningful effect on strength recovery or tissue repair.
There is no evidence for adhesion release, fascial unwinding, or lactate clearance. The last one is physiologically implausible, since lactate clears within an hour on its own.
None of that makes the device worthless. Feeling better is a legitimate outcome and feeling better often means moving more, which is where the actual benefit lives. It makes the device a comfort tool with a plausible mechanism rather than a treatment.
A massage gun changes how a muscle feels for twenty minutes. It doesn't change what the muscle can do next week. If your recovery problem is five hours of sleep and no walking, no device fixes that, and the $400 one doesn't fix it faster than the $120 one.
The three other specs worth checking
Noise, in decibels at arm’s length. Under 50 is quiet enough to use while watching television. Above 60 is annoying, and you’ll use it less. Most underrated number in the category.
Weight and balance. Under a kilogram is comfortable for self-use on your own back. Above 1.3kg you fatigue before the muscle does. Balance matters as much as weight; a nose-heavy device is tiring to hold at the angle you need.
Warranty. One year minimum, two better. These are motors in a plastic shell.
You need three attachments: a large round head, a small bullet for trigger points around the shoulder blade, and a flat head. Anything beyond that is packaging.
Where not to put it
Not optional.
The front of the throat and the carotid triangle, where vessels and nerves do not want to meet percussion. Directly on the spine, meaning the spinous processes and the cervical spine; work beside the spine, not on it. Bony prominences: shin, collarbone, the point of the shoulder, the sacrum. It hurts because there’s no muscle there.
A swollen, hot, painful calf, because that combination can be a deep vein thrombosis and mechanically disrupting a clot is dangerous. An acute injury, bruise or fresh strain in the first two or three days. Any area where you can’t feel pressure.
Also not on the abdomen during pregnancy, and not on anyone with a bleeding disorder or on blood thinners without asking their clinician.
When you don’t need one
If you want it because it feels good after training, that’s legitimate. Buy a mid-range one.
If you have a specific pain you’re hoping it will fix, it won’t. Read the body-part page instead, or see someone.
If you already own a foam roller and use it twice a month, you’ll use the gun about as often.
If you’re buying it instead of sleeping, walking, or training consistently, it’s the expensive version of not addressing the problem.
The order to buy things in
A foam roller, $25 to $40, covers more muscle mass per minute with comparable evidence. A lacrosse ball, $6, is better than the gun for glutes and feet. A resistance band, $12, does more for most pain than any percussion device. The gun comes fourth, and it comes fourth because it’s a comfort product with a real but limited effect.
That’s not a knock on the category. It’s a ranking of dollars per unit of outcome, and the gun loses to three things that cost less than a fifth as much.
General consumer information, not medical advice. With a diagnosed condition, a bleeding disorder, or pregnancy, ask a clinician before using percussion therapy.
Common questions
Do massage guns actually work?
For short-term comfort and a modest temporary increase in range of motion, yes, with moderate evidence. For reducing delayed onset muscle soreness the effect is small and inconsistent. For breaking up adhesions or flushing lactic acid there's no good evidence, and the physiology doesn't support it.
Is amplitude or stall force more important?
Both, and they solve different problems. Amplitude is how far the head travels; under 10mm feels superficial, 12 to 16mm reaches deeper tissue. Stall force is how much pressure the motor takes before it stops. High amplitude with weak stall force is useless the moment you lean on it.
How much should I spend?
Most people are well served between $100 and $200. Above that you're paying for build quality, battery and quietness, which are real but rarely change outcomes. Below $70, expect exaggerated specs and a motor that stalls under light pressure.
Can I use it on my neck?
On the upper trapezius and the muscles beside the spine, gently, yes. On the front of the throat, over the cervical spine itself, or over the carotid artery, no. There are structures there that don't respond well to percussion.
General information, not a diagnosis or a treatment plan. If pain is severe, came on suddenly, followed an injury, or hasn't improved in a few weeks, see a clinician. Full medical disclaimer.
Vefit Life