Slow Twitch

Slow-twitch muscle fibers are designed for endurance as well as long-term activities. They are resistant to fatigue but generate less strength immediately.
Slow-twitch muscle fibers are utilized for endurances such as marathon running, triathlons, or cycling tours. They utilize oxygen effectively to produce a consistent supply of power for extended periods. They cannot perform well in high speed for brief sprints but have the endurance to maintain a consistent rate for many hours. They can improve by practice and enable the athletes to perform successfully in long-distance competitions.