Types of fibers

Types of fibers

1. Muscles generate ATP by cellular respiration

2. Glucose uptake

   • Glucose is one the primary energy sources
   • GLU channels are measured in intensity and will grow

3. Oxygen uptake

   • Maximum consuming of oxygen is called "maximum uptake"
     • Expressed as: Vo(2) max
     • Size, gender and age determine this
   • Means the quantity of O2 molecules used
   • Excercise means agitation and use of O2
     • People breathe rapidly in order to pay the "oxygen debt"

4. Lactate threshold

   • Used to define the intensity of an excercise

5. Phosphocreatine

   • More ATP is used during excecise
   • Phosphocreatine in muscles is 3 times higher in number than ATP

6. Skeletic muscle fiber clasification

   • Type I: Slow contraction fibers
   • Type IIA: Oxidative glucolitic fibers of quick contraction
   • Type IIB: Glucolitic fiber of quick contraction