Rambai, the 106-year-old sprinter who took up athletics two years ago when she was 104 years and set a world record for a 100m sprint in the above-85 category last year, on Monday added more feathers to her cap by bagging three gold medals — one each in a 100m sprint, a 200m sprint and one in shot put — at the 18th National Open Athletics Championships held by Yuvrani Sports Committee at Dehradun.