Laurence Maroney lifted the barbell over his head, settled it on the back of his shoulders, and did a number of squats. Up and down he went, flexing his knees with the heavy weight bearing on his shoulders. Over and over again. There were five huge weights hitched to each side of the bar, roughly 305 pounds worth of tonnage, as sweat poured down his face, as Maroney continued the repetitions while filming a TV commercial yesterday for Reebok and sporting goods retailer Modell?s. When asked if he would be ready for training camp, which begins July 27, Maroney went against course, and provided a somewhat more substantive response. ?Everything is looking on pace to me,? he said. ?I don?t have a projection. I?ll be out there hopefully when I get out there, but until then, I?m going to work hard every day to get better.?