Nick Jonas has confirmed that the mystery injury he suffered over the weekend was a cracked rib as a result of a biking accident.

The 28-year-old was hospitalised on Saturday night while filming a new TV show, although details of his injury - and the show he was working on - were not immediately clear.

Jonas was fit enough to take his usual spot on The Voice on Monday night, however, and told host Carson Daly that he is recuperating well.

"I'm feeling okay. I've been better, but I'm doing all right," he said.

"[I have a] cracked rib from a spill on a bike, and a few other bumps and bruises.

"I just want to go ahead and say that, in case I'm not as physically enthusiastic as I usually am!"

Details of Jonas's new TV project are still unknown, although earlier on Monday NBC announced details of a new summer show called Olympic Dreams Featuring Jonas Brothers, which will see Nick and his siblings Joe and Kevin compete against each other in Olympic disciplines.