Muscle fibers come in two main types: Type I and Type II. Each type has its own special features.

Type I (Slow-Twitch) Muscles:

• What They Do: These muscles help with activities that need a lot of endurance, like running a marathon.
• Features:
  • They have lots of mitochondria, which help produce energy.
  • They can work for a long time without getting tired.
  • They mainly use oxygen to create energy.

Type II (Fast-Twitch) Muscles:

• What They Do: These muscles are great for quick and powerful movements, like sprinting.
• Features:
  • They have fewer mitochondria compared to Type I.
  • They get tired quickly.
  • They mostly rely on energy sources that don't need oxygen.

Knowing the differences between these muscle types is important. It can help coaches create training programs that suit each athlete's needs!