Methods and apparatus for exercising a person's quadriceps muscles
OwnerKenneth W. Stearnsinventor
Life of this patent
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Abstract
An exercise machine includes a frame designed to rest upon a floor surface; a back rest mounted on the frame; and a foot platform mounted on the frame. At least one of the foot platform and the back rest is movably mounted on the frame in such a manner that a person may rest his back against the back rest and exercise his quadriceps muscles in isolated, closed chain fashion. A resistance device is preferably provided to resist an increase in distance between the user's hips and the user's feet due to straightening of the user's legs at the knees.
Claims10
A method of exercising a person's quadriceps muscles in isolated, closed chain fashion, comprising the steps of:
- providing a frame configured to rest upon a floor surface;
- providing a foot platform;
- providing a back rest;
- and
- mounting the back rest and the foot platform on the frame in a manner that supports a person with his back resting against the back rest, his thighs extending at an orthogonal angle to his torso, his knees bent, and his feet on the foot platform, and allows the person to press his feet against the foot platform to straighten his legs at the knees while keeping his back against the back rest and maintaining the orthogonal angle between the person's thighs and torso.
A method of exercising a person's quadriceps muscles in isolated, closed chain fashion, comprising the steps of:
- providing a frame to rest upon a floor surface;
- providing a foot platform;
- providing a back rest;
- and
- mounting the back rest and the foot platform on the frame in a manner that supports a person's legs in a closed chain disposed between the back rest and the foot platform, during movement between a rest position, wherein his legs are relatively bent at the knees and his thighs are perpendicular to his torso, and an extended position, wherein his legs are relatively straight at the knees, and his thighs are still perpendicular to his torso.
Dependencies are inferred from the claim text.