| 摘要 |
An exercise machine applicable for strengthening a user's abdominal muscles is described. The exercise machine can include a base frame having a seat pad, a front leg and a rear leg to provide ground support. A mounting assembly a front pivot joint and a rear pivot joint may be rotably mounted on the base frame. A backrest assembly including a backrest pad, lever bars and backrest support bars can be pivotally coupled to the mounting assembly. The front ends of the backrest support bars can be pivotally coupled to the front pivot joint. The front ends of the level bars can be pivotally coupled to the rear pivot joint. The swivel movements can be controlled via a adjustable control mechanism including a height control adjustably attached to the mounting assembly to provide a stop height support of the backrest pad at the rear end of the backrest bars. |
