Bruce Wiggin Walks in Exoskeleton Device (IMAGE) North Carolina State University Caption Dr. Bruce Wiggin walks on a laboratory treadmill using the exoskeleton devices that helped able-bodied adults walk 7 percent more efficiently in a study published in Nature. Credit Marc Hall, NC State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.