Originally Posted by The Pencil Neck
A guy with more fast twitch fiber is going to have more power and be more explosive. How high you can jump and how far you can jump are both good indicators of if you have predominately fast twitch muscles in your lower body.
I am not arguing with your general description. However I think this is still a somewhat undeveloped field of medicine and even the terminology of power gets hinky. As a simple example Tour de France cyclists. Both considering very short term max efforts (say the same half a kilometer) the sprinters will blow the doors off the climbers on a flat but put them on a mountain and in that same half K the climbers will blow the doors off the sprinters. Both are power situations.