Kevin Federline was hospitalized on Monday after expereincing a high pulse rate while warming up for a challenge in a weight loss show.

Federline, the ex-husband of Britney Spears who has since remarried, was being filmed for the show Excess Baggage, had just completed a running and catching warm-up drill used by challenge with an Australian Football League team, a Nine Network spokesman told AAP.

He was taken by ambulance to Mt. Druitt Hospital for further testing, a spokesman for production company FremantleMedia said.

“During a challenge, the show's medic was concerned that Kevin's pulse rate was high so as a precautionary move, called an ambulance,” the spokesman said.

Greater Western Sydney team, a Nine Network spokesman told AAP.