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Originally Posted by
pshotsb17
Many SS professionals have good, data (or lack of data)-based arguments for why foam rolling is a waste of time. I found this interesting explanation for why "knots" occur in muscles and why massaging helps release them. Assumig the explanation below is correct, why does this not apply to foam rolling? And if it does, why is it still valid to say foam rolling is a waste of time? Looking at you here, Reverend Dr JFeigs.
"Our muscles are made up of bundles of cells. They are long and skinny like the hairs on your head. Wrapped around each muscle cell is an organelle called a sarcoplasmic recticulum.
One of the things the sarcoplasmic recticulum does is to control calcium flow within the cell. So when there is an electrical signal from the brain for the muscle cell to contract the sarcoplasmic recticulum exudes calcium from its membrane and that calcium mixes with a protein in the cell called myosin. That starts a chain reaction, and then the muscle cell (fiber) contracts.
Then when there is an electrical signal from the brain for the muscle cell to relax or lengthen the sarcoplasmic recticulum reabsorbs the calcium separating it from the myosin, and the muscle fiber relaxes.
Now about stress:
Stress is a big issue (emotional tension, repetitive movements, a blow from an accident, sudden movement, or whatever) that can cause the sarcoplasmic recticulum to rupture or break. And when it breaks, the calcium just leaks out and mixes with the myosin thats present in the area so whatever muscle fibers run through that mixture contract. And that's your knot- an area of contracted muscle fibers within a relaxed muscle.
Anyway, when you find a knot (trigger point, sore spot or whatever you wanna call it) when you press on it you are pushing that calcium myosin mixture out of the area back into the venous system. Then the muscle fibers can open up and lengthen. The cellular damage is still there but now the fresh blood can get in and repair the damage (broken sarcoplasmic recticulum).
That's why trigger points tend to linger until they get stretched out or pressed out- the capillary flow is cut off."