DES MOINES, Iowa (AP) — Olympic gold medalist Shawn Johnson is back training after spraining her right foot, just a few days before the final world team selection camp. Johnson slipped off the balance beam Tuesday, and agent Sheryl Shade says she was back at practice later that night. Johnson says she’s fine, tweeting Wednesday: “I’m doing ok everyone! Healing fast & still planning on giving it my all!” She leaves Saturday for the final selection camp, and the world team is expected to be named next Wednesday. Worlds are Oct. 7-16 in Tokyo. Johnson made big improvements at last month’s U.S. championships, her second meet since winning four medals at the Beijing Olympics. She was fourth on beam and sixth on uneven bars – the Americans’ weakest event – and planned to upgrade the difficulty of her routines.