Abstract: The present invention relates to an adjustable center-mass weight assembly including a plurality of substantially concentric weights engaged by one or more capturing rods which can be extended from or retracted into a rotatable handle. As the handle is rotated in a first direction, the rods extend through consecutive weights to add weight and by rotating the handle in a second direction weight can be removed from the weight package. The weights can come in a variety of shapes but preferably they will be in the shape of cylinders, squares, or hexagons, for example, such that by disposing the handle across a central axis the weight can be centered.

Abstract: A hand-held training weight is useful in the development of hand-grip, wrist and arm strength. The hand-held training weight is ring-shaped and has radial cross-sections tapering from a smallest cross-sectional area to a greatest cross-sectional area and back to the smallest cross-sectional area in a closed-loop path. All of the cross-sectional areas are sized to be hand-gripped. The user can grip the weight with one hand at any location on the weight and extend the forearm to position the weight at a desired distance and direction from the user's body. The user can relocate the grip incrementally until the grip returns to the original grip location. At each incremental grip location the user can incrementally change the orientation of the forearm to create a personal training regimen.