The trampolines have a metal fatigue bar, meant to help a user keep his or her balance while using the device. But the fatigue bars can break during use, increasing the risk of injury, the U.S. Consumer Product Safety Commission said.
The trampolines were imported from China and sold nationwide from September 2010 through April 2010 for about $55.
The trampolines involved in the recall are built for children. They have red and blue handlebars, a blue nylon deck guard and black jumping deck.
"First Fitness" is embossed on the jumping deck in white letters.
They were sold exclusively at Toys R Us retail outlets.
Consumers were advised to stop using the trampolines and prevent children from using them. Consumers can call 888-912-7087 for information, including how to receive a full refund.