I cycle 3 times a week,twice outdoor and and in the interest of matrimonial bliss indoor at weekend.
My heart rate zones are as per strava
I'm 34 Resting heart rate 42bpm
zone 1 -116
z5 191 til whenever I am sick or pass out have seen 197.
What I am finding is that when I ride outdoors solo or in a group I can sustain a rate of 170-180 for the length of a sportive. Indoors I can barely reach 170 going all out let alone sustain it.
Anyone got ideas why I am seeing such a big difference?