Inspired by the running training thread and realising that I’ve plateaued and seen to be picking up niggly not quite injuries, I decided to experiment in zoned training.
Dust off an ancient heart rate monitor (bought in Tiso in May 2002 - receipt was still in box) purchased shortly before becoming pregnant with oldest child then dumped in a drawer and forgotten about. Change battery in wrist display and lo and behold it still seems to work.
Displaying a resting heart-rate of 59 which seems fairly feasible for a fairly fit 55year old female. I head out the door, switch on Strava and put my phone in my pocket - glance at watch, apparently heart rate is 201. Keep an eye on it and it’s doing fairly weird things, sometimes jumping from maybe about 165 beats to over 200 then returning quickly to something more feasible.
I’m wondering if it’s the proximity of my phone so I take it out of my pocket and run down the road with it held out to the side like a complete tube. Doesn’t seem to help. Wonder if it’s the wiring in my bra and draw the line at taking that off whilst going along the road.
Manage to get some feasible readings amongst the 220bpm nonsense but of course have not a clue if they are actually accurate or not.
Try again today. Warm up in the house with phone in same pocket and monitor seems to be behaving perfectly. Head outside and immediately 220bpm from a gentle jog the 1Om or so to end of driveway. The only thing I can think which might be causing the difference in behaviour is the fact that I’ve switched Strava on, on my phone.
Would Strava cause interference on an old HR monitor?