초록 ▼

An inventive exercise device is disclosed for facilitating the strengthening of abdominal and back muscles, and includes a resistance member coupled between a lap engageable base and an arm positioning member. The arm positioning member helps to maintain the back of the user in a substantially uprig

An inventive exercise device is disclosed for facilitating the strengthening of abdominal and back muscles, and includes a resistance member coupled between a lap engageable base and an arm positioning member. The arm positioning member helps to maintain the back of the user in a substantially upright position as the arm positioning member applies and releases reciprocatively and alternatingly in a substantially vertical path of travel of the upper body of the user against the force on the resistance member during repetitions of use of the device. The resistance member resists substantially vertical downward movement relative to the base member to enhance the development of muscle strength by enabling the upper body of the user to contract and expand reciprocatively vertically without leaning forwardly in a safe and effective manner.

대표청구항 ▼

1. An exercise device for a seated user, comprising: a horizontal lap engageable base member for resting on the lap of the user sitted in an upright position; a thigh brace arrangement conncected to said base member; an upright resistance means pivotally connected to said base member for resist

1. An exercise device for a seated user, comprising: a horizontal lap engageable base member for resting on the lap of the user sitted in an upright position; a thigh brace arrangement conncected to said base member; an upright resistance means pivotally connected to said base member for resisting substantially vertical movement relative to said base member; and a horizontal arm positioning means pivotally connected to the upper end of said resistance means for applying a substantially vertical force to said resistance means and for helping to maintain the back of the user in a substantially vertical upright position as said arm positioning means applies and releases said substantially vertical force to said resistance means to enable the upper body of the user to contract and expand vertically without leaning forwardly to exercise the muscles of the user in a safe and effective manner. 2. An exercise device according to claim 1, wherein said resistance means includes a piston cylinder assembly. 3. An exercise device according to claim 2, wherein said piston cylinder assembly is adjustable to vary the resistance to said substantially vertical movement. 4. An exercise device according to claim 1, wherein said arm positioning meaty includes a chest engageable member. 5. An exercise device according to claim 4, wherein said chest engageable member is generally T-shaped. 6. An exercise device according to claim 4, further including padding material disposed on said chest engageable member. 7. An exercise device according to claim 1, wherein said arm positioning means includes an elbow brace member and a hand brace member spaced apart from said elbow brace member. 8. An exercise device according to claim 1, further including pivot means for connecting said resistance means to said base member and said-arm positioning means. 9. An exercise device, comprising: a lap engageable base member; resistance means connected to said base member for resisting substantially vertical movement relative to said base member; a chest engageable member connected to said resistance means and offset therefrom; an elbow brace member connected to said chest engageable member; and a hand brace member spaced apart from said chest engageable member for cooperating with said elbow brace arrangement to apply a substantially vertical and downward force on said resistance means to enable the body of the user to contract and expand reciprocatively vertically without leaning forwardly. 10. An exercise device according to claim 9, further including a thigh engageable brace member connected to said base member. 11. An exercise device according to claim 10, wherein said chest engageable member is T-shaped. 12. An exercise device according to claim 9, wherein said elbow brace member includes a pair of oppositely disposed hook members connected to said chest engageable member. 13. An exercise device according to claim 9, wherein said hand brace member includes a pair of hand braces. 14. An exercise device according to claim 9, wherein said resistance means includes a piston cylinder assembly. 15. An exercise device according to claim 14, wherein said piston cylinder assembly is adjustable to vary the resistance to said substantially vertical movement.