1. You say 0% gradient on the treadmill...1.5% gradient is usually considered equal to running outside on flat ground.
2. Heat has a major impact on running HR, and some RPE. So, if you are holding the same HR/RPE inside and out...and its 90F outside...that's going to be a big factor. I just got done running in 90F (Dallas), my HR was up 18bpm (at the same pace) from 2 weeks ago when it was 75F.
3. Treadmills tend to be pretty inaccurate, and are often calibrated at walking speeds. Mine is about 30-45 s/mile slow, and the calibration procedure zeros out the error @ 3.0 mph. Using my garmin footpod, my treadmill is 30-45 seconds / mile slow at 7mph. ymmv (pun intended).
2. Heat has a major impact on running HR, and some RPE. So, if you are holding the same HR/RPE inside and out...and its 90F outside...that's going to be a big factor. I just got done running in 90F (Dallas), my HR was up 18bpm (at the same pace) from 2 weeks ago when it was 75F.
3. Treadmills tend to be pretty inaccurate, and are often calibrated at walking speeds. Mine is about 30-45 s/mile slow, and the calibration procedure zeros out the error @ 3.0 mph. Using my garmin footpod, my treadmill is 30-45 seconds / mile slow at 7mph. ymmv (pun intended).
Last edited by:
Tom_hampton: May 26, 17 11:10