Forums >Health and Nutrition>Spike in Heartrate
"The drops of rain make a hole in the stone, not by violence, but by oft falling." - Lucretius
Good Bad & The Monkey
I'm running somewhere tomorrow. It's going to be beautiful. I can't wait.
Poor baby
Please provide an elevation profile for this activity if possible.
The HR spike is right after the bottom of the hill, just as you turned back uphill. I suspect that you were coming down at a higher pace (which your graph shows) and turned up the hill while at that pace. This is likely why your HR jumped briefly. High pace + sudden incline
Very likely a measurement error. Interesting how noisy the HR reading was up until about 1.5km, then very smooth for the rest of your run. My guess is the electrodes on your chest strap had poor contact with your dry skin until you started sweating more. Also the drastic noisy to smooth change at 1.5km, you likely made an adjustment to the strap either consciously or by accident.
My board certification covers cardiology.