An apparatus for training muscles of the back, abdomen, arms, neck and shoulders, consisting of two equally dimensioned parallely disposed and coaxial rings (1) which are fixedly connected with a support frame (2) and a U-shaped swing (4) with a foot rest (7) and a locking device (23, 24) to support the feet of the user. A fixing device (15-21, 25-28) for the waist of the user is arranged close to the axis of rotation of the swing. In use, the rings (1) serve as a handrail. The swing is adjustab...