Question

1. which statement best describes the reason for delayed onset muscle soreness?

lactic acid accumulating in the muscle
fast twitch fibers working as slow twitch fibers
muscle resting after an intense exertion
repair process due to microscopic muscle damage

Explanation:

Delayed onset muscle soreness (DOMS) is commonly associated with lactic acid buildup in muscles. Lactic acid is a by - product of anaerobic metabolism during intense exercise. When lactic acid accumulates, it can cause muscle soreness.
Fast - twitch fibers working as slow - twitch fibers is not a recognized cause of DOMS. Muscle resting after intense exertion is a normal process and not the cause of soreness. While microscopic muscle damage can occur during exercise, it is the lactic acid accumulation that is the more immediate and well - known cause of the soreness described in DOMS.

Answer:

lactic acid accumulating in the muscle