This is an underwater stair climbing unit which uses a fixed flap attached to the front of each foot plate for resistance. The downward movement of one foot plate results in an upward movement of the opposite foot plate. Resistance is encountered during the movement of the legs upwards and downwards due to the fixed flaps.
Stair climbing is an excellent exercise for the quadriceps and hip extensor group of muscles.
This unit, in an average person, allows each knee to flex to about 90 degrees and come to almost full extension. The unit is provided with a seat to neutralize the advantage of the weight of an individual in helping to push the foot plates down. Higher resistance, enough to exclude most females, is encountered when using the stair climber in the seated mode. In addition, the knees are exercised in a flexed position and do not attain full extension.