| 摘要 |
A foot rest made from a suitable material (e.g. a polyolefin) may have, in cross section, a tear drop configuration defined by a progressively increasing width or may have a cylindrical shape in cross section. An aperture is provided through the foot rest and a hollow rod is extended through the aperture. In one embodiment, a stretchable member made from a suitable material such as a latex extends through the hollow rod closed loop. The user disposes the stretchable member around his thighs and feet and then reclines on a floor with the user's back on the floor. The user then rests his feet on the floor against the foot rest while reclining. The user then alternately arches the user's back upwardly to stretch the stretchable member and collapses the user's back against the floor to release such stretching. In another embodiment, a belt in the form of a first closed loop is attached to the opposite ends of a stretchable member to define with the rod and the stretchable member a second closed loop larger than the first closed loop. The belt may envelope the user's waist. The second closed loop extends between the user's waist and the bottom of the user's feet. The user then disposes both feet on the foot rest and alternately rises from a crouched position to a substantially upright position to stretch the stretchable member and then bends the user's knees to the crouched position to relieve any stretching of the stretchable member.
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