WimbledonCyclist
New Member
Bill Gates said:The purpose of taking it in the first place is ... to determine a higher than normal reading from overtraining or illness of some sort and then to slacken off with the training.
Setting training zones by heart rate is not an exact science, although the use of formulae of varying complexity can lend an aura of such exactness.
Ignoring training zone calculations: if we go back to key info you want to glean from a resting heart rate as you articulated in your first post as quoted above, then I would even venture a guess that the lowest heart rate at night during sleep has an edge over the "measure after sitting down calmly for 15 minutes"-approach.
Why? Because it takes a reading at the point of deepest physical relaxation. It is not influenced to the same extent by the time of day or activities immediately prior to the reading. It is a that point that any variation is driven primarily by the body's state of recovery and health. The only other main variables that potentially kick in are such things as time to bed, volume of alcohol drunk, general nutritional state and, of course, how vigorous one's love life was immediately before falling asleep .
I've never taken a night-time HR reading, and probably never will because sleeping with a strap on (note the absence of a hyphen) seems uncomfortable, but I'm starting to get intrigued now ...
It also seems that there's some variation in advice here. Sitting down and taking a RHR is one way of going about things. But Runner's World editor and "running writer" Amby Burfoot for example recommends taking the RHR in the morning while still in bed, just after waking up. That's what I do, it comes with minimum hassle, and it tells me what I need to know, right at the start of the day. What more can one ask for?