When I get him in a chair, he's still squatting, elbows balanced on knees, as if he's ready to pounce, a man made entirely out of fast-twitch muscles.

O'Neil called him "something of a basketball anomaly", adding that Leonard "gained all that height without losing his coordination or his fast-twitch muscles."

Jones's flexing of his fast-twitch muscles, as well as his might, had clearly shaken Ruiz's confidence.

Hackett explains Marion Jones's success (May 14) in terms of her "genetic makeup" and of being "born strong, with fast-twitch muscles."

Chronaxie varies across different types of tissue: fast-twitch muscles have a lower chronaxie, slow-twitch muscles have a higher one.

Perhaps his slow muscles would be tired, but maybe he had not used up his fast-twitch muscles.

It proves you have mostly fast-twitch muscles.

Healthy people lose fast-twitch muscles, which are used for short bursts of energy.

They're fast-twitch muscles that use a lot of energy keeping them there.

Loss of muscle mass, or atrophy, occurs notably in Type 2 muscle fibers - the fast-twitch muscles used in high-intensity activities.