What condition is caused by sudden irritation or overuse of muscles or tendons?

Bursitis is the condition characterized by sudden irritation or overuse of muscles or tendons. This inflammation occurs in the bursae, which are small, fluid-filled sacs that cushion the bones and reduce friction between tissues, such as muscles, tendons, and bones. When these structures experience excessive stress or repetitive motion, the bursae can become inflamed, leading to pain and discomfort in the affected area.

In athletic training, understanding bursitis is crucial because it often affects individuals who engage in repetitive activities, such as runners, swimmers, and weightlifters. Recognizing the signs and symptoms, such as swelling, tenderness, and restricted movement, allows for early intervention and management strategies to alleviate pain and prevent further injury.

The other options—diastasis, osteoarthritis, and subluxation—refer to different conditions that involve various mechanisms, such as improper alignment, degenerative changes, or physical separation of anatomical parts, rather than the specific irritation or overuse of muscles or tendons that is characteristic of bursitis.