BIOL1900 Lecture Notes - Lecture 8: Fick Principle, Hypertrophy, Red Blood Cell
Document Summary
Lecture 8 anthropometry and adaptions to endurance training. Principles of training: fitt (frequency, intensity, time and type, overload - to get benefits body must be overloaded, specificity, periodisation, reversibility - adaptations reverse if you stop training. Left ventricle improves its capacity to pump blood: stroke volume increases, muscle is thicker, changes occur in 6-8 weeks. Improves the delivery of oxygen and removal of by-products: capillary network increases, mitochondrial density, allows more fat to be burned - fat can only be burned in oxygen, mitochondria holds aerobic enzymes. Muscle fibre type: some type 2b fibres become more like type 2a fibres (more aerobic) Intramuscular substrate stores: endurance athletes have higher stores of glycogen and fat. Increased muscle strength: power increases from strength. Increase intramuscular buffering capacity will help neutralise the acid build up and allow anaerobic energy to be generated for a little longer: pfk - phosphofructokinase - increased activity of the glycolytic enzymes.
