[pmcarlton]

It takes a few clicks to get to the supplemental data movie:

https://rs.figshare.com/articles/media/a_participant_running...

You'd probably want to switch directions often!

[BLKNSLVR]

The ankle flex when the right foot lands makes me wince every single time. I wonder how much that's to do with the direction of gravity, the angle of their body looking not quite horizontal (and therefore 'weirding' the angle that feet hit the ground), and how much is to do with the individual's physiology.

[funnym0nk3y]

You could build it with a slight angle. Or gradually steeper like a high speed race track.

[sandworm101]

In actual lunar gravity the forces should balance out. At a particular speed, tied to the wall angle, the forces should align with the floor to let the foot land as if running on a horizontal surface. Imaging a motorcycle in a turn. Then tilt the road to match the bike's lean angle. The tire/foot then falls flat against the road.

[alex_young]

Why? The bungee cord is only needed for earth gravity.

[purpleidea]

Because the moon still has gravity, and there would be some asymmetrical force on your legs either which would be reversed if you went the other direction. So switch directions all the time to be less lopsided.

[pwr22]

It's not a symmetric exercise, look at the feet. You'd probably want to keep the overall workout balanced by alternating periodically?