Some say Heart Rate Recovery is only good if you exercise to exhaustion or failure, and then only test it after 60 seconds. So if you ran all out until your heart rate was 170 as an example, you should check your heart rate in 60 seconds and it should have dropped to 150.
Other things I have read and talked to others about says you should check it after 120 seconds and it should have dropped at least 30 bpm.
The only health report I could find that was stated on multiple web sites is the exercise to your maximum and then check your heart rate in 60 seconds and if you heart rate dropped more than 12 points you are at less than 1% risk of a heart problem.
So, where are all of these other things coming from, or am I just not finding these other reports?
Do you only need to check after you work to maximum heart rate, or can you do the max heart rate during your run, and then look at it in 60 seconds. Does this mean to go from running at 7.0 mph and dropping to a walk at 4.5 mph or immediately sitting down in a resting position?