“The Biggest Loser” trainer Bob Harper finally spoke up after initially denying to address the controversy that surfaced among viewers of the show after Rachel Frederickson's dramatic 155-pound weight loss for the reality program. 

According to reports, Harper appeared on “The Rachael Ray Show” where he said that he was as surprised as most of the viewers when he saw Frederickson’s transformation.

“When the contestants leave to go home...they're in charge of themselves,” Harper replied to Rachael Ray’s question if he too felt that Frederickson had become too skinny. “So I had not seen her until that night, and so when she walked out, I was just kind of like, whoa. And I've been on the show since the beginning."

“I was stunned. That would be the word,” he reportedly said. He went on adding: “I mean, we’ve never had a contestant come in at 105 pounds.”

On Wednesday, Harper said in a Facebook post that he and fellow trainer, Jillian Michaels, “want to take a moment to congratulate all of the BL contestants on their hard work.” He added that: “We're not comfortable commenting on Rachel's journey because we weren't her trainers and weren't given an opportunity to work with her at any point. Any questions about the contestants on The Biggest Loser should be directed to the show's producers.”

Frederickson's trainer, Dolvett Quince, reacted to the controversy by writing on his Facebook account: "Last night's Biggest Loser finale has sparked a huge reaction, and I do not want the day to end without addressing it. Biggest Loser is a journey which has its ups and downs. Please try not to look at one slice of Rachel's journey and come to broad conclusions.”

He added: “Rachel's health is and always has been my main concern and her journey to good health has not yet ended!!”

Frederickson, who won a prize of $250,000, had responded to criticism from fans and critics who claimed that she had taken her weight loss program for the show too seriously after she shed more than half her original weight -- 260 pounds -- when she came on the show.

“I am extremely proud of the way I lost the weight on the show. I followed the advice and the support of the medical team on ‘The Biggest Loser,’" Frederickson reportedly said.