ANTA CLARA – A year goes by in which he recorded 19.5 sacks in 20 games, the 49ers defensive end Nick Bosa was waiting to see what he could do after an ideal offseason to prepare.

Before entering his third NFL season, Bose spent a few months away from the game to improve his strength and conditioning after surgery to repair a torn anterior cruciate ligament in his left knee.

Now that he’s done this healthy all season, he can tune his body well while honoring his football skills.

Asked on Wednesday if he was in better condition than he did a year ago, Bose replied, “Most definitely.”

Bose reported for the team’s mandatory minicamp after working out most of the offseason in Florida this week.

“It was a kind of general offseason training that I didn’t really get to do that much last year,” Bosa said. “I was on my way to recovery, and this year I was healthy from the beginning, so it took me a while and then I left.

“So far, I’m focusing mainly on my body where I need to play in the long season. And from now on, I will apply a lot of football-specific content.

Bosa, who only participated in individual exercises during the first two days of camp, appears to be in tremendous shape with less body fat than he last saw around the 49ers’ practice facility.

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