Assertion: muscle fiber's amount | /r/HasProperty | size of the muscle cells
Facets:
Source sentences:
text: The majority of the time, the real limit to your performance is the number of motor units your nervous system can recruit in the short amount of time you have in a sporting movement and the amount of horsepower (size of the muscle cells) under control of those motor units, not the type of muscle fiber (slow twitch or fast) that comprises those motor units.