The speed with which force is developed by skeletal muscles is determined by the
A) Ca²⁺ ATPase activity.
B) sarcoplasmic calcium concentration.
C) myosin ATPase isoform.
D) Ca²⁺ ATPase activity and sarcoplasmic calcium concentration.
E) Ca²⁺ ATPase activity, myosin ATPase isoform, and sarcoplasmic calcium concentration.

Question

Quizplus · Accepted Answer

The speed of force development in skeletal muscles is primarily determined by the myosin ATPase isoform, as it dictates the rate of cross-bridge cycling during muscle contraction.

The Speed with Which Force Is Developed by Skeletal Muscles