Abstract: An aerobic exercise device for simulating jump-roping in which there is provided a handle element and a tubular element rotatably coupled to an end of the handle element by a stretchable rubber member, which rubber member passes entirely through the hollow interior of the tubular member. Upon rotation of the rubber member and tubular element together by the handle gripped by a person's hand, the weight of the tubular element causes the rubber member to stretch because of centrifugal force to provide cushioning or shock absorption. A weight element is also provided about the outer circumference of the tubular element, which weight element is adjustably positionable along the tubular element via an o-ring that is snugly received in an open end of the weight element, so that the torque created during the revolving of the tubular element may be varied.

Abstract: A portable exercise device for simulating jumping rope has a handle portion which is connected to a weighted tubular portion via a flexible and stretchable rubber strip. The weighted portion has a weight element mounted in the end of the tube adjacent the handle portion to make the center of gravity of the weighted portion closer to the handle portion. One end of the rubber strip is connected to a rotatably-mounted central shaft extending through the handle portion, so that the shaft and interconnected weighted portion may rotate relative to the handle portion. The other end of the rubber strip projects outwardly from an end of the weighted portion and has a stop member. The weighted portion slides along the rubber strip, so that, when the handle portion is given a swinging motion by an arm, the weighted portion revolves about the handle portion.