How many of you guys run on treadmills? Do you up the incline at all when you do? I recall hearing somewhere that a slight incline makes the treadmill feel closer to a road run, but I don't know if that's true or not.
I do both.
When I'm on a treadmill it's never flat, minimum of 1% incline.
I like a treadmill for doing intervals or hill intervals.
I can control the speed and incline.
The scientific stuff...."When you run outside, your legs create propulsive force, driving your body
forward through space. When you run on a treadmill, the body’s center of
mass is static: there is no forward “locomotion.”
Additionally, the treadmill belt automatically drags your foot backwards eliminating the need for the hamstrings and gluteals to pull the upper body forward,
as compared to outdoor running.
This requires hip flexors to work harder to move the back foot forward.
Because of these fundamental differences, many runners notice faster times
when they run on a flat treadmill as opposed to running on level terrain outside.
You can replicate flat road running on the treadmill simply by adjusting the incline to 1%: the slight slope requires you to push forward, just as you would on the open road.
See this in action by running 1 mile at no incline and 1 mile at 1%.
Note each time and compare it with your outdoor pace. Which is closest to your road running pace?"