The multiaxis exercise trainer was an exercise machine in the Enterprise gymnasium. In 2152, this machine was used by Charles Tucker III. (ENT: "Vanishing Point") This machine was named by the Star Trek Encyclopedia (4th ed., vol. 2, p. 58) , which definted it as a, "free-rotating exercise device consisting of three concentric gimbals, each rotating on a different axis, with a harness at the center. The user shifts his or her weight to cause the device to rotate, providing a full-body workout." It is noted by this reference work, "The device, which was a modified version of a commercially-produced exercise machine [...] is based on NASA's multiaxis space test inertia facility, used to train early astronauts. During the third season, the exercise device was modified to become part of the d