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Horizontal running inside circular walls of Moon settlements

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Re: Horizontal running inside circular walls of Moon settlements

#71
post #70

Earlier quoted context omitted.

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

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

I.e. “don’t skip the left day!”

Re: Horizontal running inside circular walls of Moon settlements

#72
post #65
post #53

Earlier quoted context omitted.

With a hamster wheel, aren't you basically running in one spot near the bottom? If so, do you know what causes the dizziness?

Because you're looking forward at the platform that's moving down and toward you. Kind of like if you were to stare down at the belt of a treadmill while it's moving - it would be disorienting after a while.

Doesn't this boil down to a claim that blind people are incapable of running on a constant upwards slope due to motion sickness?

Because even if your claim is correct, and the conflicting visual input is disorienting, the Moon-dweller on a similar contraception could just close their eyes.

Re: Horizontal running inside circular walls of Moon settlements

#73

I didn't see any mention of having a spinning surface. A tapered cylinder "gravity gym" with adjustable angled walls, and variable speed spinning, could smoothly create much greater "gravity". Spin gravity would also enable body weight exercises, core exercises, stationary or small area cardio like exercise bikes, VR games, yoga, etc. Even sleeping. EDIT: I missed this: > but Moon-based centrifuges allowing locomotio…

Wild idea: build one on earth to simulate 1.1G (or higher; whatever would still be comfortable) and put gyms, hotels, swimming pool, living quarters, etc. in it. Being in it for extended periods of time would build up muscles and bones. That would likely be something that fitness people and professional athletes would be interested in. And it's a good dry run for building and operating these things on Mars and the Moon. If we can make these things work on Earth, making them work in lower gravity is only going to be easier as the g-forces would be lower.

A train or roller coaster on a slightly tilted circular track would probably do the job. A slight tilt would just move the gravity vector orthogonal to the floor.

Re: Horizontal running inside circular walls of Moon settlements

#75
post #72
post #65

Earlier quoted context omitted.

Because you're looking forward at the platform that's moving down and toward you. Kind of like if you were to stare down at the belt of a treadmill while it's moving - it would be disorienting after a while.

Doesn't this boil down to a claim that blind people are incapable of running on a constant upwards slope due to motion sickness? Because even if your claim is correct, and the conflicting visual input is disorienting, the Moon-dweller on a similar contraception could just close their eyes.

Staring down is not equivalent to being blind. Motion sickness occurs when signals from your eyes (like the motion of the world around you), body (like wind on your face) and auricular semicircular canals (organs in your ear that sense acceleration) conflict with one another. In theory, your brain reacts to this with nausea because historically that situation would mainly arise due to illness or poisoning, so it might be good to vomit. That's why you can sometimes alleviate car sickness by opening a window (convincing your brain that you're definitely moving) or, if you're driving at constant speed, refraining from looking out the window (convincing your brain that you're stationary).

Blind people only have 2 out of the three signals so they might be less prone to motion sickness.

Re: Horizontal running inside circular walls of Moon settlements

#76

Is there a reason something like a water rower wouldn’t work on the moon? Possibly with a weighted vest or a weighted seat. Rowing is pretty full body and doesn’t seem that reliant on gravity.

I'm always baffled that these studies don't put more emphasis on resistance training, since the main issue is that your body no longer has to resist the forces of gravity on a day-to-day basis. In theory exercises like the major compound lifts should go a long way because they stimulate almost every muscle in the body. You get a lot of sustained muscle growth out of doing big lifts even just 2-3 times of week. Of cou…

NASA has IRED for resistence training on ISS. IIRC regiment was ~1xBW squats/deadlift for 3x10s in space every few days. Upper body was even more "normie" strength requirements. I think the routine included many hours of resistence training in general with very conservative weights to maintain mass and avoid injury at all costs.

Re: Horizontal running inside circular walls of Moon settlements

#77

I didn't see any mention of having a spinning surface. A tapered cylinder "gravity gym" with adjustable angled walls, and variable speed spinning, could smoothly create much greater "gravity". Spin gravity would also enable body weight exercises, core exercises, stationary or small area cardio like exercise bikes, VR games, yoga, etc. Even sleeping. EDIT: I missed this: > but Moon-based centrifuges allowing locomotio…

Wild idea: build one on earth to simulate 1.1G (or higher; whatever would still be comfortable) and put gyms, hotels, swimming pool, living quarters, etc. in it. Being in it for extended periods of time would build up muscles and bones. That would likely be something that fitness people and professional athletes would be interested in. And it's a good dry run for building and operating these things on Mars and the Mo…

Why did nobody do this yet? It would totally be a great prototype for stuff in orbit.

Re: Horizontal running inside circular walls of Moon settlements

#78

Is there a reason something like a water rower wouldn’t work on the moon? Possibly with a weighted vest or a weighted seat. Rowing is pretty full body and doesn’t seem that reliant on gravity.

A rower wouldn’t provide the same impact forces on the feet, a key driver of the physiological processes that maintain bone density in the legs, hips, and likely even spine.

Forces from the muscles are the main bone stimulator. Running in low gravity would probably use less muscle force then a rowing machine.

Re: Horizontal running inside circular walls of Moon settlements

#79
post #74

Is this the same concept as the running scene in the film 2001: A Space Odyssey?

Actually no. In the movie, there is already gravity present in the hub - generated by rotating this large cylindrical hub. Running in such hub would increase gravity slightly but no running is needed at all! Just being in such hub is comparable to running in cylinder mentioned in the paper.

Running in small (10m) diameter cylinder increase gravity significantly without need to spin the cylinder.

Anyway to minimize effects of Coriolis force in spinning cylinder, I think that the size of the cylinder would be significantly larger than the size in the movie.

Re: Horizontal running inside circular walls of Moon settlements

#80
post #43

Finally I get to be that guy in the comments with a weird about of relevant experience. I built the world's largest hamster wheel in 2012[1], a large rotating circular platform ~6m in diameter. It was a fun and unique experience to run on for a short amount of time, but most people would get dizzy after a few minutes of jogging on it. The curved platform also turned out to be a bit of a tripping hazard. It was more o…

If this dizziness is anything like VR sickness, you can become acclimated to it.
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