Recovery corresponds to 55-65% of VO2Max.The rate of carbohydrate metabolism is equal to or just higher than fat metabolism,Used primarily to promote recovery from hard training.
Moderate Aerobic Corresponds to 65-75% of VO2Max.Energy comes predominately from carbohydrate but fat is still being metabolised. Used to build general base of aerobic fitness and maintain fitness aerobic fitness .Long run is typically run at this pace.
High Aerobic corresponds to 75-85% of VO2Max.Carbohydrate provides virtually all of energy required for muscle contractions. Used for late base building period and the latter period of endurance events like the marathon.
Anaerobic threshold or Lactate threshold (LT) corresponds to 85-90% of VO2Max.This is the transition zone from aerobic exercise to anaerobic exercise.For endurance athletes LT identifies the specific intensity that is very close to the maximum aerobic an athlete can race at and train at to improve. Typically LT is the pace you can sustain for about an hour. LT can be improved by about 40 per cent with proper training(just under LT).LT is used mainly during build phase and speed phase.
Aerobic capacity or VO2Max, Used to improve VO2Max, to improve running economy and to strengthen lactate buffering and shuttling capacities. Total time should be at least 6 mins for endurance athletes try to keep recovery the same length as the effort.
Speed above VO2Max and below sprinting i.e. 600m -1500m race pace .this pace improves Stride and fast-twitch muscles,used during speed phase.
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