Energy Systems Adaptations to Training Energy systems: increased aerobic and anaerobic enzymes; increased use of fats as an energy source

Energy System Adaptations to Anaerobic Training ATP – CP Will increase stores of ATP & CP Anaerobic Glycolysis (Lactic Acid System)  in levels of glycolytic enzymes Less Lactic Acid produced, more efficient Cori cycle (converting lactic acid in the liver back to glucose to use) Increased buffering capacity (acid-base balance) more able to tolerate lactic acid for longer! More energy can be produced through these systems

Adaptation to Aerobic Training ↑ the availability of carbohydrate and fats as substrate to meet cellular needs for ATP resynthesis. ↑ capillary density ↑ myoglobin content (increases extract of O2 to the muscle cells) ↑ activity of oxidative enzymes (aerobic pathways) ↑ oxidative capacity linked to ↑ numbers of mitochondria Therefore O2 ↑ utilization

Adaptation to Aerobic Training Increased capacity to oxidize Fats shifts the energy source from glucose to fat (to spare glucose) Decreased utilisation of the anaerobic glycolysis (LA) system ↓ lactate concentration ↑ clearance of lactate during exercise