Massage, Foam Rolling and Stretching: What They Do

Massage, foam rolling and stretching are the three things most people reach for when they are sore or stiff. All three feel good. The question worth asking is what each one actually changes in the tissue, and the answer is less than most people think. That does not make them useless.

What they do to soreness

The soreness after a hard session, the kind that peaks a day or two later, comes from small amounts of damage in the muscle fibers and the inflammation that follows while they repair. Massage and foam rolling both reduce how sore people report feeling, by a modest amount. The likely reason is not that they flush anything out. Pressure on the muscle changes how the nervous system reads the signal coming from it, in the same way rubbing a bumped shin makes it hurt less. The damage is the same. The volume is turned down.

That is a real effect and a useful one. Feeling less sore means moving more normally the next day, and moving is what actually speeds recovery.

What they do to flexibility and performance

Stretching is sold as a way to lengthen tight muscle. Measured carefully, the muscle itself changes very little. The gain in range of motion after a few weeks of stretching comes mostly from the nervous system tolerating a longer position before it signals a stop, not from the fibers getting longer. Foam rolling produces a short term increase in range of motion that is gone within an hour.

Strength training through a full range of motion improves flexibility about as well as stretching does, and it builds strength at the same time. For most people with a desk job and tight hips, a deep split squat does more than ten minutes of hip stretches.

For performance, the evidence is the thinnest. Massage before an event does not improve strength, power or endurance. Foam rolling before training does not measurably change performance either way. Long static stretching right before lifting or sprinting tends to reduce force output slightly for the next several minutes, which is why we move it to after the session or to a separate time of day.

How to use them

Use them for comfort and for consistency. If a weekly massage is what keeps someone showing up to train, it is worth the money. If five minutes of foam rolling makes the warm up feel better, do it. If stretching in the evening helps someone wind down and sleep, that is a benefit.

What none of them replaces is the work: training, protein and sleep. A 50 year old who is sore all the time usually needs a look at how much they sleep and how hard they are training, not a better roller.

That's the kind of thing we look at.

This article is educational and is not medical advice.

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