Naomi Johnson continued to impress after capturing the silver medal in the women’s 400 meters at the first Asian U23 Athletics Championships in Ordos, China over the weekend.The 21-year-old Johnson timed 52.34 seconds for the runner-up honors behind eventual gold medalist Jonbibi Hukmova of Uzbekistan, who clocked a personal-best 51.19sec.Sri Lanka’s Jithma Shenari Wijethunga Ambepitiya Gamage bagged the bronze with her own personal-best 53.10se…