Subject: RE: MAF-Maffetone Method-any thoughts? I used the Maffetone formula to pick a heart rate for training earlier this year. A foot injury prevented me from doing a hard run to get a better estimate of my actual fitness.
Recently I noticed that 180 - age looked a lot like (220 - age ) - 40. Both are based on age. I used a spreadsheet to compare the ranges of values from the Maffetone formula, after applying his adjustments, to see what percentage of 220 - age would give the same numbers. I compared from 20 years old to 65. 75% of (220 - age ) is the same as Maffetone's recommendation for a beginner 20 year old. 75% of (220 - age ) is also close to the top of the Maffetone range, what a veteran triathlete should use, for a 65 year old.
The old (220 - age ) formula may not be very accurate by itself but taking a reasonable percentage of it as your training heart rate puts you at the same place as the Maffetone formula. I think Maffetone provides a conservative, safe training method and target heart rate estimate. It's not the only way to get fit but it will work. |