Temperature Impact on HR (maybe: N-Zone)?

I miss Munich. I lived in Maxvorstadt for 6 months back in 2004. Used to train at the Olympiapark.

Anyway, I would say that thermoregulation during exercise would directly lead to an increased cardiac output, and therefore increased HR, for the same pace performed at a warmer temperature. Being well trained exaggerates this effect, while acclimation likely reduces it. A higher cardiac output during warm weather is from vasodilatation of the vessels in your skin to dissipate heat. The higher cardiac output and heart rate, probably didn’t strain you noticeably since you are well-conditioned, but your body probably received a greater amount of training stress from the workout than usual. I think blood flow can go from about 0.5L/min to up to 8L/min during hot maximal exercise, while overall cardiac output can go from about 5L/min to ~30L/min overall during exercise at any temperature. And since cardiac output is finite, a higher percent gets shunted to your skin, which can reduce blood flow to muscles at high intensities. At lower intensities, like your run, your heart rate just goes up and is able to compensate for both skin and muscle demands.

— Steve

Hey Leon!

I would recommend reading the article I link here:

Performance loss through warmth

Another point to keep in mind is that most of the energy produced by a muscle is “wasted” as heat and not for the actual movement. So there are high demands for cooling the body. Especially if the intensity rises.

You need some warm days to adjust now. And you will need some cold days to adjust when winter is coming. But at first, we should all look forward to spring and summer. And hopefully some time in the Biergarten. Sieht aus als sollten wir eine deutsche UA Runde machen!?;-)

lg!
Thomas