To better understand how astronauts function in their suits and their environment, researchers at NASA Johnson Space Center’s Anthropometry and Biomechanics Facility (ABF) are studying motor control and evaluating human physical measurement, variation, and movement. To study human movement, ABF researchers use motion capture technology. By using the motion capture technology, a segment of the body (e.g. the lower arm) can be tracked in 3-D as it moves. Conducting ground-based research with this technology is helping NASA designers and engineers develop efficient tools and equipment, non-restrictive space suits, and easily accessible controls on space vehicles.