Originally Posted by supcom
After reading Ric Stearn's comment I did some searching specifically for any references to decreasing HRmax with fitness. I did find several claims to that effect but only one claim with any specifics and that claimed up to 6-10 bpm reduction with increased fitness. I also see as many claims stating that HRmax will decrease at a slower rate with age for higly fit individuals. However, it seems certain to me that the HRmax is primarily determined by genetics and age.
it's *Stern*.
HRmax does not decrease at a slower rate with increased fitness, and may actually decrease at a faster rate (i can't recall this at present). VO2max however, does decrease at a faster rate in ageing athletes compared to sedentary controls.
ric