
Negative Heart Rate Drift Test
Hey everyone, so I just started the 20 week first ultra trail plan and performed my first heart rate drift test. Kind of confused about interpreting the results as I got a negative pa:hr result.
Did it on a relatively flat 1km loop, keeping a consistent pace but GPS goes a little funky on some bits.
Should I re-test on a another loop or just set my top Z2 to 150 for the time being:
Activity link: http://tpks.ws/CSNOTXSFXAH46WKSDDA3HBUA34