I started using the arc trainer elliptical machine at a 15 level resistance, working my way higher in order to keep my HR over 100. I continually increased the resistance level up to a 25 in order to keep my HR above 110, below 120. Since I was creating an activity, I wasn't monitoring the Intensity Minutes meter (IMM) during the session.
Total elliptical time: 30 minutes
Total IMs: 31 minutes
I was getting near 100% "Moderate" exercise minutes from an "easy" exertion elliptical session, keeping HR 100-120 (max 134) for the entire workout.
The Strava heart rate chart from the elliptical.
While on the treadmill earlier in the day, running at an average pace of 10:19 and as fast as an 8:20 minute/mile, keeping my HR above 130 (max 157), I was getting mostly "Vigorous" exercise minutes (22 minutes of vigorous, 13 of moderate exercise).
Total treadmill time: 35 minutes (incl. 3 cool down)
Total IMs: 57 minutes.
The Strava heart rate chart from a treadmill run.
Please check out my final post on Intensity Minutes and the VHR in general: http://www.midpackgear.com/2016/01/vivosmart-hr-final-wrapup-and-some.html