'Lactate threshold' (LT: approximately 2 mmol/l) is almost exactly the speed at which endurance races are won, and close to those apparently providing optimal aerobic training. This training, predominantly of muscle aerobic capacity, elevates LT more than maximum oxygen consumption.
The lactate threshold or anaerobic threshold is the same as the ventilatory threshold II. This is also roughly the same as the functional threshold. Other terms, like the onset of blood lactate accumulation (OBLA) and maximum lactate steady state (MLSS) are essentially the same as the anaerobic threshold.