💀anatomy and physiology i review

Fast oxidative (FO)

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Fast oxidative fibers are a type of skeletal muscle fiber that combine high-speed contraction with aerobic metabolism, utilizing oxygen to produce ATP. They are resistant to fatigue, enabling sustained, moderate-intensity activities.