Which of the following best explains the difference in muscle volume between untrained horses and trained race horses?
Which of the following best explains the difference in muscle volume between untrained horses and trained race horses?
Trained race horses use muscles more often than untrained horses, therefore, muscle volume is greater
Trained race horses require less muscle volume to achieve the same energy efficiency as untrained horses
Muscle volume is greater for trained race horses to make up for a lower respiratory volume compared to untrained horses
Muscle volume is less for trained race horses because cardiac output requires the muscles to work harder than untrained horses