I remember reading that west Africans have fast twitch muscles and almost every other race has slow twitch.
To use a car analogy fast twitch muscles are like nitrous oxide and slow twitch muscles are more like a turbo charger. In the short term you'd rather have the nitrous because it gives a much greater horsepower boost compared to the turbo charger. The problem is that nitrous oxide is useless once it's run out of compressed oxygen but the turbo charger will keep going and going.
This is why NFL has laxed it's substitution rules, if the NFL limited substitutions in the same way that other football codes do then blacks would be out of the sport. This is why people like Saban hate no huddle offenses so much, everything he recruits has **** for stamina.
somewhat right, but we wouldn't be able to dominate things like weight lifting if we had less fast twitch, there are two types of fast twitch, type II a and type II b.
"These fast twitch fibers can be further categorized into Type IIa and Type IIb fibers,[SUP]
[1][/SUP] which are also known as "fast twitch oxidative" and "fast twitch glycolytic," respectively. Type I fibers are characterized by low force/power/speed production and high endurance, Type IIB fibers are characterized by high force/power/speed production and low endurance, while Type IIA fall in between the two.[SUP]
[2][/SUP]
"[h=2]"Type IIA Fibers
Edit[/h] 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).[SUP]
[6][/SUP] They contain very large amounts of myoglobin. Type II A fibers are red, unlike Type II B fibers, which are white. Type IIA fibers have a very high capacity for generating
ATP by oxidative metabolic processes, and split ATP at a very rapid rate.
They have a fast contraction velocity and are resistant to fatigue. [SUP]
[7][/SUP]
[h=2]Type IIB Fibers
[/h] Type IIb fast-twitch fibers, or fast glycolytic fibres (also known as Type IIx), are recruited for very short-duration high-intensity bursts of
power such as maximal and near-maximal lifts and short sprints.[SUP]
[6][/SUP] Type IIB fibres contain a low content of myoglobin, relatively few mitochondria, relatively few blood capillaries and large amounts glycogen. Type II B fibres are white, while Type I (slow twitch) fibers are red. Type IIB fibers are geared to generate
ATP by anaerobic metabolic processes, however, they are not able to supply skeletal muscle fibres continuously with sufficient ATP, and fatigue easily
ATP at a fast rate and have a fast contraction velocity. Such fibers are found in large numbers in the muscles of the arms."
we probably have more type IIa. they say it is possible with enough exercise that type IIb can be transformed to type IIa so it seems to be the ideal muscle to have because your right, the burst of strength really does only last as long as nitrous
ound:
