| 摘要 |
A knee exerciser is a U-shaped support with a base and two sides to support a cross member having a rotatable outer surface at an elevated position relative to a supporting surface. The sides have a plurality of openings that correspond to one another so that the cross members can be inserted into two corresponding openings to vary the height of the cross member relative to the supporting surface. The cross member has a core with a rotatable plastic sleeve located thereon. In a method of operation, a user rests a back of the knee on the outer surface and flexes the knee through a range of movement. There are stabilizers along each side to maintain the exerciser in an upright position.
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