The blood lactate concentration will show an increase equal to 4.0 mM; it then accumulates in the muscle and then moves to the bloodstream.
[2] Regular endurance exercise leads to adaptations in skeletal muscle which raises the threshold at which lactate levels will rise.
[4] The lactate threshold is a useful measure for deciding exercise intensity for training and racing in endurance sports (e.g., long distance running, cycling, rowing, long distance swimming and cross country skiing), but varies between individuals and can be increased with training.
[2] Interval training alternates work and rest periods allowing the body to temporarily exceed the lactate threshold at a high intensity, and then recover (reduce blood-lactate).
[8] AeT is the exercise intensity at which anaerobic energy pathways start to operate, considered to be around 65-85% of an individual's maximum heart rate.
[2] In zone-based polarized training methodologies, LT1 is commonly used to designate the linear inflection point, often observed around blood lactate levels of 2.0 mmol/L, while LT2 is commonly used to designate the non-linear inflection point, often observed around blood lactate levels of 4.0 mmol/L.