Spartan420 wrote:
My Threshold HR is 163 BPM. Running, I'm at threshold at 6:40/mile. At 8:15/mile, I am at 120 BPM'ish.
On the bike, riding at 65-70% FTP, my HR is around 116 BPM. At 75-80% of FTP my HR gets to 125 BPM.
Swimming w/ a HR monitor this week, my HR averages 125 BPM.
Are there guidelines on what HR should be where at different FTP's or swimming?.
Are you trying to prescribe work rates based upon percent HR? My approach would be to measure your maximal heart rate during each of the disciplines....assuming that you're healthy enough to undergo maximal exercise tests. Without each discipline's known max HRs (and aside from perceived exertion), an absolute HR value is entirely arbitrary as it relates to relative effort.
Also, you should be using Karvonen's method (heart rate reserve) if you're interested in setting up your HR zones; not percent of max HR.
Edit: also, there are several really interesting physiological mechanisms (both central and peripheral) that are differential influenced during swimming vs. running. You should read about them if you're interested.
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