Lactate & pyruvate w/exercise

[Guest guest]

Hi everyone,

For those of you who have had exercise tests with lactic acid levels measured afterwards, what was considered an abnormal result?

I had a treadmill exercise test done last week. The lactic acid beforehand was 0.87 and it rose to 8.4 with 10-15 minutes of walking on the treadmill. The lactate/pyruvate ratio was 8.7 before exercise and 30 after exercise. Pyruvate before and after were 0.1 & 0.28. My TPN pharmacist said, based on something he read, that the lactate/pyruvate ratio needs to be over 50 to be considered abnormal after exercise. The local geneticist said that a lactate over 2-5 would be considered abnormal w/exercise, but he's away all week so I can't ask him any further details at the moment.

Just curious what other experiences may have been. I know what the resting norms are, but does anyone know of anything published by Cohen or others that reference norms after exercise?

Thanks!!

Malisa