MLSS = maximal lactate steady state, highest power output you can ride at without an increase (or a very small one) of lactate. (close but likely below what you can sustain for a 40-km TT)

OBLA = Onset of blood lactate accumulation, the power output that elicits a 4 mmol/L lactate reading

CP = Critical power. the extrapolation of two or three tests of varying durations to give a power output from the eqn y = mx + c. (will over estimate power for > 60-mins duration)

Additionally, LT, lactate threshold, = the power output that elicits a 1 mmol/L increase in lactate over exercise baseline level (which will result in a lactate of ~ 2.xx mmol/L) or at a fixed value of 2.5 mmol/L. (about 15% less power than that, which can be sustained for ~ 1-hr).

Additionally (ii), MAP = maximal aerobic power = the power output that is averaged over the final minute of a maximal incremental test to exhaustion, where various power can be estimated from this, see http://www.cyclingnews.com/fitness/?id=powerstern

if you want to know what power you can sustain for a ~1-h TT (or whatever duration) then do one, don't rely on these markers.

additionally, and most importantly, none of these measures have anything to do with HR and should never have HR data with them (i.e., you can't say your LT = 160 b/min).

ric