The present invention relates to a transmission structure for changing sliding direction of a climber apparatus, which enables an operator to operate the apparatus in an upright position. The transmission structure includes: a base, a support, a first slide rail, a second slide rail, a first transmission unit, a second transmission unit, a first handle slider, a first footplate slider, a second handle slider, and a second footplate slider. During manufacture and assembly, the first handle slider, the first footplate slider, the second handle slider, and the second footplate slider are able to be respectively connected to a first drive member or a second drive member at different selected positions. Under the prerequisite that the left foot and right foot of the operator carry out alternate reverse treading throughout the exercise routine, different training modes can be selected.

A machine, apparatus, and method for targeting the gluteal muscles. The exercise system includes a stationary left foot plate, a stationary right foot plate, and a mobile foot plate. The mobile foot plate is coupled to an arm and is configured to travel down and backward when pressed by a user's foot. An adjustable weight set is attached to the mobile foot plate and provides adjustable resistance when exercising. To exercise the gluteal muscles, the person stands with left or right foot on the corresponding stationary foot plate and places the other foot on the mobile foot plate. The person then drives the active foot downward and backward, then returns to the original resting position, thereby contracting and relaxing the gluteal muscles.