Walking in space shuttle in 2001: A Space Odyssey

There is a scene in 2001: A Space Odyssey where we can see the lead actor running or jogging in the space shuttle bound for Jupiter and there is a scene in the beginning where an air hostess uses velcro kind of shoes and then spins 360 degrees and then walks into another room.

Why does she need a magnetic or velcro shoes whereas the person jogging does not? Is it related to speed?