Our bodies are trained in gravity. Gravity dictates the way we sit or stand. During Glenn's flight, scientists will gather information about physiological changes on an older body in space that will be important to all of us, Osness says. Although we have some good evidence about why people age, there is still a lot we need to know. Older adults, in their 70s or 80s or older, are comparatively easy to motivate to improve their fitness, Osness says.
Teenagers find it difficult to look ahead.
Generally they are in good shape and have fewer self-image problems. Middle-aged adults find they can do less than they could, their body structure is changing and they have a desire to do something about it. This site is maintained by University Relations, the public relations office for the University of Kansas Lawrence campus. Copyright 1998, the University of Kansas Office of University Relations, Lawrence, KS, U.S.A. Images may be reused with notice of copyright, but not altered. KU news releases may be reprinted without permission.