"A spinoff from robotic space technology may someday help astronauts stay fit in space and help paraplegics walk on Earth, Nasa says. The U.S. space agency and the Florida Institute for Human and Machine Cognition (IHMC) have jointly developed a robotic exoskeleton called X1. The 57lb device is a robot that a human could wear over his or her body either to assist or inhibit movement in leg joints... In the inhibit mode, the X1 exoskeleton would be used as an in-space exercise machine to supply resistance against leg movement. The same technology could be used in reverse on the ground, potentially helping some individuals walk for the first time."