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Massage Chair Technology Explained in Simple Terms

When comparing massage chairs, you’ll come across terms that are used everywhere but never explained: 4D, L-Track, Zero Gravity, Amma. Here’s what they actually mean—explained in a way that will help you make informed decisions during a sales conversation.

How a massage chair works

Two things determine what an armchair is capable of: how the casters move and how far they go.

With Video2D, 3D, 4D, and 5DWhat the numbers really mean. First things first: 4D refers to speed, not dimension. With video.S-Track, L-Track, SL, and iOpenThe track determines whether the rollers end at the lower back or extend all the way under the buttocks.

Types of Massage

It's impossible to tell which technology suits you best. But it is possible to tell what each one does.

Kneading MassageTwo heads move in opposite directions along an elliptical path. Most similar to a hand massage.Tapping MassageShort, quick taps against the back. Relaxes the surface muscles and tends to invigorate rather than tire you out.Rolling and StretchingThe gentlest technique. Good for warming up and for anyone who finds kneading too intense.ShiatsuSustained pressure instead of stroking movements. Origins, procedure, and what a massage chair can replicate.Air pressure massageAir cushions on the arms, calves, and feet—where rollers can’t reach.Amma MassageThe Japanese pressure massage from which Shiatsu later emerged.Lymphatic drainageGentle, wave-like pressure directed toward the lymph nodes.

Location and Operation

Zero GravityThe position in which the legs are raised above heart level and the back is lying flat.Automatic ProgramsWhat’s behind the preset programs and when they’re useful.Manual OperationWhen you want to target a specific area.

Where the Limits Lie

A massage chair is not a medical device and is not a substitute for medical treatment. There are situations in which it should not be used.

Contraindications for Using a Massage Chair: Please read this before getting a daily massage , especially if you have a herniated disc, osteoporosis, a recent injury, or are pregnant.

After that, only one thing matters

Whether the rollers align with your shoulders or miss them by a little depends on your height and where your pelvis sits in the chair. None of these articles mention this because it can’t be mentioned in any of them. Your body will notice it within the first few minutes.

That's why every armchair is set up here, and you can try them out one after another : Test them out at seven showrooms.