| 摘要 |
An exercise apparatus which also serves as an effective training device for mountain bikers. The invention utilizes a frame resembling that of a bicycle's frame. The frame supports handle bars having a gripping portion and two foot pedals. Each pedal is fixable to the frame and adjustable in height. Each foot pedal further has an abrasive upper surface for contact with the sole of a user's shoe. This abrasive upper surface acts to prevent slippage of the user's foot from the pedal. The frame is supported by two legs, one supporting the front part of the frame, the second supporting the rear part of the frame. Each leg is rotatably attached to the frame and oriented in a diagonal direction. The range of motion of each leg is limited by a compression spring which further acts to rotate the legs to their extended state after an external force causes them to retract. When in use, downward force exerted by the user on the invention's foot pedals and handle bars causes a corresponding force on each compression spring and retraction of each leg. The compression spring then reacts by exerting a corresponding downward force and extends the leg, thereby thrusting the frame and, therefore, the user upward. Through this action, the user is able to repeatedly hop from location to location at a variety of angles in addition to hopping on one leg at a time. The invention not only serves as an effective exercise device, but provides a means for a realistic simulation of the activity of mountain biking.
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