ANSC 2251 Lecture Notes - Lecture 97: Glycogen, Endurance Riding, Phosphocreatine
Document Summary
Atrial, ventricular, and specialized excitatory and conductive muscle. 2b- jumping, sprinting, galloping, racing quarter horses (anaerobic glycolysis) 2a and b are more efficient if they use fatty acids as fuel. Muscle fibers characterized by slow contractions speed and a large capacity to use oxygen. They store and use fatty acids as their primary fuel source. Best suited for low intensity exercise of long duration. A- capable of using fatty acids as a fuel source and also use glycogen. B- use glycogen as primary energy source and do not use fatty acids to any great extent. Mainly used for high intensity work of short duration. Warmblood= mix of fibers-- type 1 and some 2a. Use tendon to pull across a joint. Training results in transitions in muscle fiber types from fast > slow ; building up endurance increases metabolic efficiency increase 2a some increase in type 1 sprint training.
