dmz
May 24, 2015 at 12:25 am
According to the formula, at 51 (180-51) and taking medicine (-10) for asthma(-5), my MAF number is a whopping 114. This means I don’t get to run at all. Ever. My true VERY easy effort feel is 130’s-140’s. max HR 205, resting HR 44 & have 2 recent BQ’s, 22 ultras and marathons, 90+ races last 5 yrs, not at all injury-prone, plenty of success and improvement, only 9 consecutive days lost on 2 occasions (50+ mile ultra recoveries). I believe the formula is too inflexible for older, well-conditioned, but naturally high heart rate runners with strong aerobic bases from years of ultra and marathon training. My 50 miler are raced at 145-150 HRs, marathons are neg split, no wall, no fade averaging 168-170 and I get almost no drift upward in HR during 26.2+ races. If I could dedicate a time block to MAF, it would have to be something well beyond 114, 129-139 would be my guess.
Reply
Ivan Rivera
May 25, 2015 at 6:17 pm
Dmz:
Thanks for your comment. I’m an editor on the site. The 180-formula gives you the maximum heart rate at which you’re likely to be functioning completely aerobically. Despite the fact that your perceived effort is minimum at the 130, most likely you’re using your anaerobic system. You may be extremely resilient and far from overtraining or injury as you train. That said, if you don’t go at your MAF heart rate, it’s likely that you won’t be developing your aerobic base at the fullest extent.
If you do, however, you’ll most likely see your speed to climb quickly, particularly if you’re not injured or overtrained.
I hope this helps. Please shoot back with any questions or comments.