- The composition of skeletal muscle can be divided into two categories, fast muscle and slow muscle fiber.
- Fast muscle fibers are characterized by fast contraction speed, high strength, short-term energy provided by anaerobic metabolism, and lack of endurance.
- Slow muscle fibers are characterized by slow contraction speed, low strength, good use of oxygen, and endurance.
- The faster the movement speed, the more white muscles are stimulated, and the slower the speed, the more red muscles are stimulated.
