I'm a runner. I've been using a Garmin with GPS to track my runs, which I enjoy. I have issues with the chest strap, though. (Not just Garmin's.) I find chest straps to be very uncomfortable to wear; ...
I am looking for an implementation (or a document that describes the actual algorithm) for the energy expenditure/VO2/EPOC calculation from the heart rate variability. A few white papers about ...