First Ride with HRM -> Confused
So, I just went out for an hour with a new HRM (Sigma PC14) and I could not seem to get into the target zone. My average HR for the hour was 149 (85% of max - I'm 47) but my cadence was right at 90 for most of the time.
Now, admittedly, I've just gotten back into cycling after a 15 year absence and neither my base miles nor my cardio fitness is where it should be.
Question: Assuming that the HRM is providing accurate results, should I focus on form (i.e., keeping a good cadence) or back off until my heart rate is in the target zone? I think the answer is to just shut up and ride and things will normalize, but I'd like to do it right.