Which type of muscle soreness is often caused by acid buildup and resolves quickly?

Acute onset muscle soreness refers to the immediate discomfort experienced during or directly after exercise. This type of soreness often occurs due to the accumulation of metabolic byproducts, such as lactic acid, during high-intensity or prolonged activity. The symptoms are typically felt right away and resolve relatively quickly, usually within a few hours after ceasing the activity.

Understanding acute onset muscle soreness is important in sports medicine as it helps differentiate between normal exercise-related discomfort and more serious complications, such as injuries. This knowledge allows for appropriate guidance on recovery and training strategies to ensure athletes can perform effectively without risking harm.

In contrast, chronic muscle soreness tends to develop over time, is associated with ongoing overuse, and does not resolve as quickly. Delayed onset muscle soreness emerges 24 to 48 hours after intense physical activity and is linked to microscopic muscle damage rather than acid accumulation. Progressive muscle soreness is not a standard term widely recognized in sports medicine. Thus, the distinction and characteristics of acute onset muscle soreness make it clear why it is the correct choice in this context.