MUSCLE PHYSIOLOGY

Detailed explanation-1: -Type 2B. Type 2B (FG) fibers primarily use anaerobic glycolysis as their ATP source. They have a large diameter and possess high amounts of glycogen, which is used in glycolysis to generate ATP quickly to produce high levels of tension.

Detailed explanation-2: -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.

Detailed explanation-3: -The type IIb fibers are white in color, have the largest diameter and have a low capillary and mitochondrial volume. Most strength athletes possess a higher % of fast twitch fibers, as do those in short duration, quick moving activities.

Detailed explanation-4: -Type I Muscle Fibers They are smaller than type II fibers, are slower to produce tension, and they produce less force and power. They do, however, have the advantage of being slow to fatigue. Type I fibers rely on oxygen for energy and can keep going for long periods of time.