Physiology In the diagram depicting force velocity relationship of skeletal muscle, the difference between the three curves is mainly due to? A Frequency of muscle contraction B Muscle mass C Hypertrophy D Myosin ATPase activity 💡 Explanation In the diagram depicting force velocity relationship of skeletal muscle, the difference between the three curves is mainly due to? ✓ Correct Answer: D. Myosin ATPase activity