Horizontal running could help lunar astronauts retain physical conditioning
Phys.org -

A small team of pathophysiologists and human locomotion specialists at the University of Milan has found that it should be possible for astronauts on the moon to prevent muscle and bone deterioration by running horizontally in a cylinder. In their study, published in the journal Royal Society Open Science, the group mimicked the effects of the moon's gravity on volunteer runners inside of a borrowed "wall of death."

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