Chapter 45, Problem 12PIAT

Summary Introduction

To review:

Who among an elite distance runner and an elite sprinter would likely have a greater proportion of fast glycolytic fibers in their gastrocnemius (calf) muscle.

Introduction:

The fast-glycolytic muscle fibers contract rapidly and thus, they fatigue rapidly. These muscles derive energy using the glycolytic cycle and the myosin hydrolyzes ATP at a fast pace.