In 2154, Ensign Travis Mayweather exercised with some weights in the gymnasium of Enterprise NX-01 while discussing the arrival of three Orion slave girls with Lieutenant Malcolm Reed. (ENT: "Bound") In the Nor Iron Bars a Cage comic book, gravity weights are one of the items available to exercise with in the gymnasium of the USS Enterprise. Captain Pike uses them to exert himself while grieving for his recently deceased Yeoman, Dermot Cusack, in 2254.