Lactic acid is the influencing factor of acute muscle soreness. When people do strenuous exercise, the decomposition of muscle glycogen is accelerated and the oxygen consumption is increased, so that the muscle is temporarily in a relatively hypoxic state. At this time, muscle glycogen can be converted into lactic acid through pyruvate and accumulated in muscle. The muscles that accumulate lactic acid will contract, thus squeezing blood vessels, making blood flow blocked and producing the feeling of muscle pain.

However, lactic acid will be completely excreted within one or two hours after stopping exercise, so acute muscle soreness will not last long. Delayed muscle soreness is caused by muscle fiber injury, which generally reaches its peak 24 ~ 72 hours after exercise. A strong ache may mean that the action is wrong, or it may be overtraining, or it may be because the training level of a certain aspect has dropped, or the muscles have more centrifugal contractions.

Extended data

Mitigation methods:

(1), stretching exercise

Static stretching can accelerate muscle relaxation, relieve antagonistic muscles and help to recover tired muscles. Perform static stretching exercises on sore parts, keep stretching for 2 minutes, then rest for 1 minute, and repeat. Doing this stretching exercise several times a day is helpful to relieve spasm and lay the foundation for preventing strain during training.

(2), pat massage

Pat and massage sore parts, relax muscles, promote blood circulation, help repair muscle damage and relieve spasm.

(3), local hot compress

Hot compress is the most effective method. Hot compress on sore local muscles can promote blood circulation, accelerate metabolism, and accelerate the relief and recovery of muscle soreness, especially with slight stretching or massage, which will accelerate the elimination of delayed muscle soreness and promote it to return to normal.

(4) Take a proper rest

When the pain can't be eliminated or can't be eliminated slowly, you should take a proper rest. Because rest can slow down muscle soreness, and can slowly promote blood circulation, accelerate the elimination of metabolites, improve the supply and repair of nutrients in muscle soreness, and make it return to normal.

People's Health Network-What about muscle soreness after exercise? Teach you four clever ways to deal with it.