Ive only recently done another Vo2 max test and my heart rate zones have changed, And my training has changed 2, for the past few months i have been doin efforts at 162-175BPM, My new program requires me to do them at 180-190bpm, I have just tried it today and am having lots of trouble even getting up to 180, i cant get past about 175. What is causing this? myself i believe it is a mind over matter thing but any oppinions or suggestions would be much appreciated.
Tippster allready asked some relevant questions. Are those 180-190 intervals meant to be in the range of your LT (Lactatic Threshold)? How long are they supposed to be?
I would like to add this: It could well be that you are simply tired, while you were fit during the test. A lowered HRmax and HR at LT can be a sign of this.
A cyclist I know had the exact opposite: He had a max test and reached a HRmax of 190. Not more than a week later he did a timetrial of around 30kms. His HR graph showed longer periods above
200, with a max of 219! He must have been totally spent going into the test.
If you want to maximise your results, you will have to start listening to your body instead of the HR monitor. Your new program requires you nothing. Use it as a guideline, but change it according to how you feel.