World - class sprinters can have up to 80 % or more of fast twitch muscle fibers in their body, making them extremely fast, strong and powerful but with limited endurance. (hardgainermusclebuilding.com)
These athletes can have up to 80 % or more of slow twitch muscle fibers in their bodies, making them extremely efficient over long distances. (hardgainermusclebuilding.com)
Therefore, it doesn't seem logical to me to recommend training Slow Twitch muscle fibres very much in preparation for a strength contest or event. (trainingscience.net)