The Nets will be getting a visibly thinner Brook Lopez when training camp begins next month. Lopez, who arrived at training camp last fall weighing around 290 pounds before playing at a weight several pounds lighter, looked noticeably thinner while participating in a youth healthy lifestyle clinic at Barclays Center on Wednesday afternoon. “I’m at my playing weight,” Lopez said with a laugh. “I can attribute that to laying in bed for months, but I’m back to the weight that’s normal for me. Last I checked, I was just under 275 [pounds].” The Nets center said last year’s bigger frame had nothing to do with the fractured fifth metatarsal he suffered in Philadelphia on Dec. 20. “I may have been five pounds heavier, but that’s not what injured me,” he said. Nevertheless, it’s hard to believe the two aren’t at least partially related. Even if Lopez is a few pounds lighter, there’s no reason to believe he should have any trouble moving around players in the low block as he has while developing into arguably the best-scoring big man in the NBA.