Physiology The latent period of muscle twitch is 10ms and the contraction period is 40ms. What is the tetanizing frequency (Hz)? A 25 B 50 C 100 D 75 💡 Explanation The latent period of muscle twitch is 10ms and the contraction period is 40ms. What is the tetanizing frequency (Hz)? ✓ Correct Answer: A. 25