My target heart rate for endurance training based on my age is about 135 beats per minute. Do I have to take into account, that I have a low resting heart rate or is that irrelevant. My resting heart rate is only 45 beats per minutes. Does this also lower my target heart rate?
The Karvonen Formula shows you how to calculate your target heart rate taking into consideration your resting heart rate and your heart rate reserve.
Karvonen Formula: (MHR - RHR) x _% + RHR = THR
MHR is your maximum heart rate and is calculated by: MHR = 206.9 - (0.67 x age) (This a newer formula than the old 220 - age).
RHR is your resting heart rate.
THR is your target heart rate.