[egollin]

Thank you for all the great information in these articles and in Training for the New Alpinism.  I’ve been trying to do periodic assessment of my aerobic threshold, but your HR drift test protocol doesn’t discuss the affect of ambient temperature. I tried doing the test in a gym on an incline treadmill (fast hike at 15% incline), but am concerned that the ambient temperature in the gym is too warm, and that doing the test even at a pace that seems like it should be below my aerobic threshold (compared to HR and pace I observe outdoors), I am getting a 5.5% drift upward simply because my heart has to do extra work to cool my body down. Is there an ideal temperature or range of temperatures you use to run the test, or have you noticed this affect and how do you account for it?

[SlowAndSteady]

I’m surprised that inside a gym would be warmer than outdoors in any time outside of Autumn and Winter.

 

anyways, I’m wondering the same as my heart rate at  a given intensity can vary 20-25 beats on a cold vs hot day. What I’ve been doing is still trying to stick to the zone 2 heart rates…. So on hot days I just slow down dramatically. But not sure if that’s what we are supposed to be doing

[Author]

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