Link between heart rate and metabolic rate

emmab0902

Is there one? I know people use HRMs to estimate calories burned during exercise and at rest, but wondered if there is a correlation between a person's heart rate and their metabolic rate. (With the probably exclusion of athletes)

I am especially interested as I have been on beta blockers which are known to lower metabolism and also reduce heart rate, and now that I am weaning off them my pulse has slightly increased. Which I would love to think means my metabolism might be coming back to life again!

Perhaps I should clarify I mean changes in heart rate within an individual, as opposed to comparing heart rate between individuals.