What is fast oxidative glycolytic?
Intermediate fibers, also known as fast oxidative-glycolytic fibers, are fast twitch muscle fibers which have been converted via endurance training. These fibers are slightly larger in diameter, have more mitochondria as well as a greater blood supply and more endurance than typical fast twitch fibers.
What does fast oxidative mean?
Type 2 A: Fast oxidative (FO) fibers have fast contractions and primarily use aerobic respiration, but because they may switch to anaerobic respiration (glycolysis), can fatigue more quickly than SO fibers.
What does fast glycolytic mean?
Fast glycolytic muscles have a low supply of oxygen and therefore very little mitochondria. They contain very few myoglobin molecules and therefore appear white. The muscle fibers have a large diameter and therefore produce a large contractile force. They break down ATP quickly and therefore contract quickly.
Which of the following is a characteristic of fast oxidative type IIA muscle fibers?
Type IIA fibers, or fast oxidative fibers, are used more during sustained power activities such as sprinting 400 meters or doing repeated lifts with a weight below maximum (but not with very light weights). They contain very large amounts of myoglobin, very many mitochondria and very many blood capillaries.
Where are type 2a muscle fiber found?
the arms
Such fibres are found in large numbers in the muscles of the arms.
When are type 2a muscle Fibres used?
Type 2a fibres take on certain type 1 characteristics through endurance training. They therefore tend to have a greater resistance to fatigue, and are used in activities which are fairly high in intensity and of relatively short duration.
What are the differences between type I and type II muscle fibers?
The key difference between type 1 and type 2 muscle fibers is that the type 1 muscle fibers contract slowly while the type 2 muscle fibers contract rapidly. Moreover, type 1 muscle fibers depend on aerobic respiration while type 2 muscle fibers depend on anaerobic respiration.
Where are type 2A muscle fiber found?
When are type 2A muscle Fibres used?
When are type 2A muscle fibres used?