Stiffness in an undamaged muscle is often due to what?

Stiffness in an undamaged muscle can be attributed to poor stability at an adjacent joint. When a joint lacks proper stability, it can lead to compensatory changes in the muscles surrounding it. These muscles may become overactive or underactive as they attempt to support and stabilize the joint. This compensation can create stiffness in the muscles, as they may have to work harder to maintain stability and control during movement. The relationship between joint stability and muscle function is crucial; when joints are unstable, the neuromuscular system responds by altering muscle tightness and stiffness to protect the area from injury.

The other factors listed, such as overactive nerves, excess muscle fatigue, and lack of hydration, can impact muscle function and performance, but they do not specifically address the direct relationship between joint stability and muscle stiffness. Understanding this connection helps in identifying musculoskeletal issues and developing appropriate corrective exercise strategies.