A bar and weight discs assembly with disc holding elements intended for sports reveals a set with a bar and at least one disc for weight exercises or weightlifting, where said set is obtained by coupling the discs to the bar without the need to use other coupling means such as bar clamps or safety collars, the set can be used both for an exercise bar of the conventional type of 28 mm in diameter or for an Olympic bar of 50 mm in diameter, as well as the discs that are inserted in the bar (