To provide a load transmission mechanism in a motor torque loading type training machine capable of skillfully converting a load of rotary motion of a drive motor into a load of linear motion and being installed in a little space despite a simple structure.

The training machine has a rotary torque of the drive motor 1 defined as a load, and constitutes a four-joint link mechanism, the end 32 of the drive arm 3 is disposed with an operation member 5 held or urged by a machine user, and the swing arm 2 is directly or indirectly connected to the drive motor 1 to transmit the rotary motion to a swinging arm 2. This load transmission mechanism is configured to swing the swing arm 2 by the rotation of the drive motor 1, operatively connect the drive arm 3 which is connected by a hinge, and reciprocate the operation member 5 along a predetermined linear or curved trajectory at the end 32 of the drive arm 3 that moves corresponding to the swinging range of the swing arm 2, with the rotary motion within a predetermined angle range by the drive motor 1.