Muscle ache caused by exercise is a very common injury experience for people who participate in sports. Generally speaking, muscle soreness caused by exercise can be divided into acute muscle soreness and chronic (delayed muscle soreness). Acute muscle soreness is different from muscle strain, but refers to the pain caused by temporary muscle ischemia. This kind of pain will only appear under the condition of intense or long-term muscle activity, and will disappear as soon as muscle activity is over.

Severe pain:

Muscle pain occurs during or shortly after exercise. Acute soreness is related to the interruption of blood flow caused by muscle exertion. In the case of ischemia, metabolites can not be eliminated, but accumulate in muscles, thus stimulating pain receptors. You will fully recover in about a minute after you stop exercising.

Chronic pain:

Chronic muscle soreness often occurs between 24 and 48 hours after training. The degree of chronic muscle soreness is related to the form of muscle contraction. Centrifugal contraction is the most likely to form chronic muscle soreness, while isotonic contraction is the least significant. When chronic muscle aches, muscle strength drops obviously.