Exercising Air Footboard and Buffer for Air Footboard

Abstract

Disclosed herein is an exercise step and an air-cushioning leg for the exercise step. The exercise step ( 1 ) includes a plate-shaped panel ( 10 ), and air-cushioning legs ( 30 ). Each of the air-cushioning legs is provided under the panel to support the panel, and absorbs a load applied to the panel by air cushioning effect. The exercise step has a high air cushioning effect, thus protecting a user's knees from injury, allowing the user to exercise in comfort and safety, and minimizing noise generated during a cushioning operation. Further, the exercise step prevents the panel from being deformed due to a load applied to the panel.

1 - 16 . (canceled) 
   
   
       17 . An air-cushioning leg provided under a support unit to absorb a load applied to the support unit, said air-cushioning leg comprising:
 a main body having a two- or more-layered structure; and   an air control unit functioning to discharge a part of cushioning air from the main body to an outside, when the load is applied to the support unit.   
   
   
       18 . An air-cushioning leg provided under a support unit to absorb a load applied to the support unit, said air-cushioning leg comprising:
 a main body, including:   a plurality of tubular bulged parts having different capacities, said bulged parts being arranged to form a layered structure;   a closed base part coming into contact with a support surface; and an upper end partially opened to define an air passage;   an air control unit seated in the open part of the upper end to control an amount of air which flows in and out the main body; and   a cover member covering the upper end of the main body in which the air control unit is seated.