I've found that double half + 20 is pretty bang on for about 10 runners from my club
Yeah I may had guestimated the MP for HAAD just so it kind of tied in. All others should be as they quoted
I wasn't suggesting mixing and matching, just that you have different 'experts' offering their own views on what to base their percentages on, and what those percentages should be.
You'll see from the variety of bpm results in my document that either one of them is right and the others wrong, or they're all 'near enough'.
Choose one and stick to it.
Slightly confused by all these mnethods I created this spreadsheet formula which takes account of MHR, WHR, HAAD, P&D etc. https://drive.google.com/open?id=0B-cYrnigloEybWloNFlzTWt4Mkk&authuser=0 (go to Open and add your MHR and RHR and hit Enter)
Since this original post, I have come across Matt Fitzgerald's method of also using a percentage of your lactate threshold.
Mine aren't as close as yours, Gideon, which adds to my indecision on which to adopt
Mind you, I have some Skins shorts which make me look like I have a 'camel toe' !
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