At 6x10min in TT my HR goes up to 171bpm during the first 3 intervals, then during the fourth interval it stops at 160bpm and stays there for the remainder of the intervals. My trainer is set to erg mode, the cadence is identical in all intervals and my fan is pretty strong.
Glycogen depletion or any other explanation here?
The last intervals always feel a lot easier than the first few, even though the legs obviously show some fatigue towards the end. Increased the power by 40w after the 60min in TT and did 2x5min upright and still the heart rate wouldn't go over 160.
It is only recently that I have been able to get my HR up in the TT position but curious to this drop in HR halfway through the workout.
Glycogen depletion or any other explanation here?
The last intervals always feel a lot easier than the first few, even though the legs obviously show some fatigue towards the end. Increased the power by 40w after the 60min in TT and did 2x5min upright and still the heart rate wouldn't go over 160.
It is only recently that I have been able to get my HR up in the TT position but curious to this drop in HR halfway through the workout.