Britney Spears' ex-husband Kevin Federline has been hospitalised in Australia after suffering chest pains while filming a fitness TV show.
The former dancer has been taking part in weight-loss reality series Excess Baggage and he fell sick after completing a training session with Australian Football League (Afl) team the Greater Western Giants in Sydney on Monday (23Jan12).
Federline is said to have suffered chest pains and was treated by a medic on-set before being taken to the Mount Druitt Hospital.
The star was initially believed to have suffered a minor heart attack, but doctors found this wasn't the case and are conducting further tests, according to a spokesman for the Nine TV network.
The representative says, "Kevin was... completing an Afl-related challenge. He did his challenge, which was running and catching the ball, then while his (weight-loss partner) was taking the same challenge, he reported chest pains and a racing heart.
"Obviously on this show we have a lot of paramedics on standby and they treated him for the first signs of a minor cardiac arrest, called an ambulance and had him taken to hospital... They want to do blood tests and (he) is likely to be there until at least late tonight (23Jan12)."
Federline, 33, was previously taken ill during filming of the show in December (11), when he collapsed and was treated for heat exhaustion.