Not exact matches
Big animals have longer legs or flippers to get from point A to point B. And bigger bodies have higher metabolic rates and more fast -
twitch muscle cells, needed to convert chemical energy
into mechanical energy and rapidly accelerate.
In a study conducted in Sweden, when people looked at others who were smiling, their
muscles twitched into smiles involuntarily.
Strength training calls
into play fast -
twitch, or type 1
muscle fibers, fibers designed to generate maximal force.
You get a conversion of your fast explosive — what are called type two
muscle fibers
into type one
muscle fibers, which are slow
twitch muscle fibers that take a much longer time to fatigue.
* You can combine slow reps and fast reps
into the same set with moderate weight to reach failure and fatigue of the important fast -
twitch muscle fibers.
Slow -
twitch muscles have a high blood supply and plenty of mitochondria (energy providing structures in cells that convert food
into an energy source the cells can utilize) and myoglobin (oxygen and iron binding
muscle protein that provides cells with oxygen).
Fast
Twitch: These are known as Type 2 or white
muscle fibers (divided further
into A and B).
I looked
into MAF a bit further and found out about the difference between slow & fast
twitch muscles, what they use for energy and which is best suited for which type of activity.
As the chemical is absorbed
into their system their heart rate may increase which can cause arrhythmia, restlessness, hyperactivity,
muscle twitching, increased urination or excessive panting.