I step out of my door and find myself mid way up the Col du Norbury. The hill has already wrecked my bike and now it has scuppered my first miCoach assessment.
The assessment requires you to start walking and then gradually work your way up the effort scale from 4 to 9. 9 being just shy of a myocardial infarction. With this hill I have to pop glyceryl trinitrate under my tongue within about 10 secs and my heart rate profile shows the undesired angina spike.
So the assessment was unsuccessful in amending my heart rate zones and I had to stick with the default settings for Day 1 of the “Be Fit” plan.
This was an interval session, requiring me to move through Blue, Green and Yellow zones. As you can see from the workout chart I really struggled to hit the easy effort blue zone. The hill broke me to start with but even on the flat I found I had to walk quite slowly to get my heart rate low enough to keep the posh lady happy.
Yesterday I went to the gym to work through a second assessment workout under the controlled conditions of the treadmill. That resulted in a successful output and my zones have now been amended to something more useful. Blue zone has been increased by about 10 bpm and hopefully that will enable me to actually run in my next workout – we’ll see tomorrow.
Both Garmin and Adidas claim that the foot pod sensor is somewhere close to 97 – 98% accurate out of the box.
I’m wearing the miCoach pod within a specially designed cavity in the Adidas Ride shoe which should ensure it is optimally placed for accuracy, but something is going wrong somewhere. The treadmill recorded a distance of 1.2km versus the miCoach pacer recorded distance of 1.6km. That is a huge discrepancy but as yet I don’t know if the treadmill is dodgy or the miCoach sensor.
I have 3 other foot pod running gadgets available (Garmin Forerunner FR60 and Nike+ Sportband) so tomorrow I put them head to head in a distance comparison. Of course that won’t enable to see which is the most accurate unless I run them on a reliably known distance (like one of those grotty running tracks) but it will give me an idea of the variation. Perhaps then I can schedule in a long overdue visit to the Wimbledon Park Run to calibrate it against the 5km route.