| 摘要 |
An exercise appliance for conditioning the abdominal muscles of an individual includes an elastically resilient structure presenting a yieldable contact surface which provides a restoring force against a force applied thereto. The contact surface has a contour suitably sized and shaped to be at least partially fittable in the space formed between a support surface and a static lordotic curve of a lumbar back of an individual positioned with a remaining portion of the back of the individual in contact with the support surface. By positioning the resiliently yieldable portion of the appliance in the space formed between a support surface and the lumbar back, subsequent attempts by the individual to straighten the lumbar curvature by contraction of the abdominal muscles, forces the lumbar spine to flatten against the counter-force provided by the appliance, conditioning the abdominal muscles responsible for the action. In a further embodiment, the exercise appliance allows selection of the degree of resistance provided by the contact surface, allowing efficient use by individuals of varying levels of physical conditioning.
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