Patent ID: 7381170

Claim:
An apparatus ( 1 ) for exercising abdominal muscles in a sitting position, the apparatus comprising: an elastic and expandable tensile belt ( 2 ) which is moved by a user by active muscular exertion, and a fastening means ( 3 ) for detachably affixing said tensile belt ( 2 ) to a backrest ( 18 ) of a selected one of a chair, a car seat ( 19 ), and other article of seating furniture, wherein said tensile belt ( 2 ): a) is adapted to elastically constrain the abdominal muscles by exerting tensile force thereon, b) is adapted to engagingly encircle the waist of a user over no more than 270°, while a remainder of the waist is embraced by said fastening means ( 3 ), c) a respective connector element ( 7 , 8 ) at each end thereof ( 12 , 14 ), and d) an elastic strap ( 6 ) extending between said connector elements ( 7 , 8 ); and wherein said fastening means ( 3 ) e) extend around the backrest ( 18 ) of the chair, the car seat ( 19 ) or the other article of seating furniture, and f) is provided with two mating connector elements ( 23 , 24 ), each of which is compatible with a respective one of said mating connector elements ( 7 , 8 ) of said tensile belt ( 2 ), and which separate a front part of the fastening means ( 3 ) between said connector elements ( 23 , 24 ) from a back portion of said fastening means ( 3 ) beyond said connector elements ( 23 , 24 ), wherein an elastic region is located at said front part of said fastening means ( 3 ), while said back portion of said fastening means ( 3 ) is nonelastic and neither stretches nor shifts as the abdominal muscles are exercised.