“One of my main issues was conditioning. Their conditioning is supreme. We’re not talking about just doing S&C and circuits in the gym for the sake of it. We’re talking about boxing conditioning. Sometimes we don’t even hit a pad. Sparring, bag work, shadow boxing, technical rounds, improving your focus, improving your boxing IQ,” Joshua said to talkSPORT. “I’ve still got so much room to improve.”

Barry Hearn also praised the experience, saying Joshua had been introduced to a different level of preparation.

“We were always astonished about AJ’s level of work in the gym. Suddenly, we’re super astonished about Usyk’s. This is a whole new world,” Hearn said.

It remains to be seen how much of that system Joshua absorbed in one training camp. Usyk did not become the fighter he is after a few months with the right trainers. His style was built over decades, beginning in the Soviet amateur program before he captured Olympic gold and later conquered the cruiserweight and heavyweight divisions. His movement, balance, punch selection, and conditioning developed through years of repetition.

Physically, Joshua still looks like a heavily muscled heavyweight rather than the lean, mobile athlete associated with that style of boxing. Even after this camp, Joshua appears much closer to 250 pounds than the lighter version of himself from earlier in his career. His size and power have always been major strengths, but they also make it difficult to duplicate the constant movement and high-volume work that define Usyk’s system.

Joshua likely learned new conditioning drills, technical concepts, and training habits during the camp. Expecting him to reproduce a style that Usyk spent decades developing is a big leap.

Saturday’s fight against Prenga is the first chance to see what carried over from the camp. One training camp can introduce new ideas, but it cannot replace the decades Usyk spent building his style.