How can stiff and tight muscles result in back pain?

Answer and explanation;

-Stiff and tight muscles can constrict nerves in the back. When these nerves are constricted, it can result in sensations of pain throughout the back, especially the lower back.

Stiffness throughout the back is the result of increased tension in the back muscles. It can occur in both the upper and lower back regions. Generally, muscle stiffness results from one of a few different common causes. These includes traumas; back muscles can become stiff and tight as a result of recent trauma, and also overuse, back muscles can definitely tense up as a result of overuse or repetitive motions.