If a biopsy of the quadriceps (thigh extensor)muscles were taken from gold medal-winning speed skaters in the 4 events below,which would most likely have the SMALLEST percentage of type I muscle fibers?
Rev: 11_02_2012

Question

Quizplus · Accepted Answer

Speed skating events that are shorter in distance and require more explosive power, such as the 500 meters, typically involve a greater percentage of type II muscle fibers. Type II fibers are better suited for generating quick and powerful contractions, whereas type I fibers are more endurance-based and better suited for sustained contractions over long periods of time. Therefore, gold medal-winning speed skaters in the 500 meters are more likely to have a relatively smaller percentage of type I muscle fibers compared to the other events listed.

If a Biopsy of the Quadriceps (Thigh Extensor)muscles Were Taken