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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0969442 (1992-10-30) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 5 인용 특허 : 0 |
A device providing a sensory indication that the hands of a user executing a sit-up have moved a selected distance desired for proper execution of the sit-up, including an adjustable width base plate having substantially parallel channels disposed on opposite sides thereof, and slide plates disposed
A device for limiting lengthwise movement of the arms of a user during execution of a sit-up of the type performed by a user lying on his back with his arms extended lengthwise of and parallel to his body, and the user then elevating his head and shoulders, thereby causing lengthwise movement of his
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