Before revision: Mechanism The mechanism of delayed onset muscle soreness is not completely understood, but the pain is ultimately thought to be a result of microtrauma—mechanical damage at a very small scale—to the muscles being exercised or from the build up of acid in the muscle fibers, causing the tissues to be more sensitive .
After revision: Mechanism The mechanism of delayed onset muscle soreness is not completely understood, but the pain is ultimately thought to be a result of microtrauma—mechanical damage at a very small scale—to the muscles being exercised .