Junior Dos Santos was hammered by Cain Velasquez © Getty Images Enlarge

Junior Dos Santos has attempted to explain his lop-sided UFC heavyweight title defeat to Cain Velasquez, claiming he had personal problems leading into the fight and peaked too early in his training.

Dos Santos suffered his first UFC defeat in the December 29 main event, losing his championship belt to Velasquez following a dominant display by the challenger.

The Brazilian claims he was not in the right mindset prior to the fight, and he also says doctors have revealed he had a catalogue of physical restrictions at UFC 155.

"Really it was my head," Dos Santos told Nagradedo MMA. "I had some personal things going on, a bit of my attention was lacking because of it.

"And another thing. Soon after the fight I went to the hospital and had a scan, which showed my creatine level was too high. The normal level is up to 300, mine was in 1400.

"I also had trouble in the urine and kidneys. The explanation of the doctors is that I pushed over the line, I overtrained and problems could have happened even before the fight… I was so good that I ended up crossing the line.

"That was the explanation of doctors. Mine is that I was not good with my head, was having personal problems and did not go well mentally in the fight."

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