MUSCLE PHYSIOLOGY

Detailed explanation-1: -Type I Slow Twitch Oxidative Slow oxidative fibres contract relatively slowly and use aerobic respiration (oxygen and glucose) to produce ATP. They produce low power contractions over long periods and are slow to fatigue. High aerobic capacity, efficient at working isometrically.

Detailed explanation-2: -Slow twitch muscle fibers are predominantly used during aerobic exercise, such as long-distance running. These fibers contract slowly and have a very high aerobic capacity. As a result, they produce ATP through aerobic glycolysis. These fibers are often referred to as type I.

Detailed explanation-3: -Slow-Twitch Muscle Fibers Slow-twitch fibers are also sometimes called type I or red fibers because of their blood supply.

Detailed explanation-4: -Compared to type 1 muscle fibers, which are smaller and red (contain more oxygen), type 2 muscle fibers are larger and, according to Tatta, “pale.” Type II muscle fibers are “white” fibers because they use less oxygen. Because type 2 muscle fibers are larger, they help determine the size and definition of a muscle.