According to multiple reports, Federline, 33, was rushed to a Sydney hospital after complaining of chest pains during a challenge on Australia’s Excess Baggage TV show.

The former backup-dancer underwent a series of blood tests and is expected to remain at the Sydney hospital overnight.

A spokesperson for Australia’s Channel Nine told Contact Music:

“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 Kevin is likely to be there until at least late tonight.”

DigitalSpy reports that this is the second time K-Fed has suffered a medical problem on the Excess Baggage set since filming began nine weeks ago. In December Federline was struck down with heat exhaustion while completing a similar challenge.

Kevin has been in a well documented battle with his weight since his breakup with Britney in 2007. Prior to Excess Baggage, he appeared on the VH1 reality soap Celebrity Fit Club back in 2010.

Check out Federline in the trailer for Celebrity Fit club below (Skip to 2:00):

In other recent news, Kevin Federline welcomed a daughter with his girlfriend, ex-volleyball player Victoria Prince, in August 2011.

Kevin Federline Hospitalized Following Weight-Loss Reality Show Challenge is a post from: The Inquisitr

There were some rumors that Kevin Federline may have gotten back together with Britney Spears but those were squashed today when it was revealed that K-Fed is dating Victoria Prince.

Victoria is a statueque blonde, bolley ballplayer. She must be handy with the balls because she is on K-Feds bowlng team and they are coming second in their competitin at the moment.

When Victoria is not playing volleyball, she enjoys boating, jet skiing, and outdoor activities. I guess she can add enjoying K-Fed to that list. Its lucky Britney is in Japan, cause her reaction won’t seem quite so crazy over there.

Anyway good luck Victoria, K-Fed is a catch – if you like that kind of thing. Do use protection though cause the man is a sperminator.

More Victoria Prince pictures

Meet K-Fed’s new Girlfriend: Victoria Prince is a post from: The Inquisitr

Editors note: update from this post, includes extra details and video

A sneak peak of the documentary that everyone has been wanting to see, where Britney talks for 90 minutes, candidly about just how her life has unravelled so publicly is available.

Britney talks about how dance is therapy, and not everyone needs to go to therapy and talk about things. I think we might have discovered right there just what went wrong. Clearly, not enough dancing.

The other video touches on her marriage (presumably the one to K-Fed) and she says she got married for the idea of it, not because she was following her heart. Ok, the bys are going to love that when they are older.

Britney does however look like her old self, which is a positive. Time will tell whether the doco works wonders for her public reputation, and we all stop talking about her vagina. It would have to be a good documentary for that, though.

The documentary airs in the United States on MTV on November 30 and in the United Kingdom on 1 December on Sky 1.

Sneak Peak: Britney Spears Documentary Videos is a post from: The Inquisitr

In another daring attempt to get us to care about what he’s doing, Michael Lohan has announced plans to spar with Kevin Federline in an OK! Exclusive.

I’m glad to report that Kevin wasn’t his first choice, but Richard Johnson of Page Six. Is anyone surprised that Richard promptly refused? Michael commented to OK! that he didn’t actually care who is was, which must have been totally flattering to Kevin Federline. Michael continued by saying that “Everyone wants me to fight K-fed because he’s a notorious celebrity dad and so am I.”

It’s not about who will win, but who will fight dirtier, for sure. To Michael’s credit, he will be helping people, with donations going to Long Island’s Fight for Charity.

I still feel sorta bad for Lindsay Lohan, though. As if her life wasn’t complicated enough.

Images: WireImage

Michael Lohan vs. K-Fed is a post from: The Inquisitr