The invention discloses a physical-training back-
lying-and-belly-in apparatus. The physical-training back-
lying-and-belly-in apparatus comprises a bottom plate and a bearing plate. A supporting column is arranged in the middle of the bottom plate, a rotating shaft is arranged at the upper end of the supporting column, the middle of the bearing plate is rotationally installed on the supporting column through the rotating shaft, adjusting columns are arranged at the two ends of the bearing plate, the lower ends of the adjusting columns are rotationally installed on the bottom plate, six tension devices are arranged on the lower surface of the bearing plate, and circle holes are formed in the portions, corresponding to the six tension devices, on the bearing plate. According to the physical-training back-
lying-and-belly-in apparatus, due to a pure mechanical structure, the physical-training back-lying-and-belly-in apparatus can be started without
electricity supporting, using is convenient, the
fault rate is low, and maintenance is convenient; as rolling wheels are arranged, a user conveniently moves to any place for training, and the flexibility is high; arranged lifting columns can adjust the
slant angle of the bearing plate, the user conveniently does sit-ups with different angles, and the
training effect of the user is reinforced; the arranged tension devices can provide
external resistance for the user, and the training strength of the user is increased.