Originally Posted by
spclark
Seems the 'newest' calculation for MHR by age is the Tanaka Formula:
MHR = 208 - (0.7 x age) according to various search engines. (This one happens to be suggested by the Mayo Clinic.)
For women it's MHR = 206 - (0.88 x age);
Active individuals may instead want to use MHR = 211 - (0.64 x age);
DownUnder there's MHR = 206.9 - (0.67 x age);
BIG caveat being formulas can vary by as much as +/- 25 BPM so YMMV.
Yup. Another way to look at it is that if you take an active male with a particular MHR and try to estimate their age, you will get their age right within a window of ±40 years (±25 / 0.64). YMMV indeed.