Supporting apparatus for treadmill

A supporting apparatus used in a treadmill, the treadmill comprising a base frame configured to be placed on a supporting surface, a treadbase pivotally mounted at said base frame and biasable relative to said base frame between a reclined position where said treadbase is disposed in proximity to said supporting surface and an upright position where said treadbase is kept away from said supporting surface and a linkage coupled between said treadbase and said base frame,

• the supporting apparatus comprising:
• a supporting shaft inserted through lateral sides of said base frame and slidable relative to said base frame and interlocking with said treadbase, said supporting shaft comprising a first supporting section, which is configured to be disposed with said treadbase in said reclined position at one of the lateral sides relative to said base frame and a second supporting section extended out of an opposing lateral side of the lateral sides of said base frame, wherein the supporting shaft is configured in a way such that a length of said first supporting section of said supporting shaft being greater than a length of said second supporting section when said treadbase is in said reclined position, and the length of said second supporting section being greater than the length of said first supporting section when said treadbase is in said upright position.