Hand grip therapy devices and systems for rehabilitation system for increasing the functionality and/or strength in a hand compromised by disease, injury, and the like. In one embodiment the hand grip therapy device includes a dodecahedron portion which is gripped by a hand having less functionality and a prism or paddle portion which is gripped by a hand having greater functionality, the device then being manipulated in a therapeutic manner using both hands.

An exercise device combines a dumbbell and a kettlebell in a single weight that can be used as either a dumbbell or kettlebell, which can also be used in tandem with one unit at the end of a weight-lifting bar, with a hollow center handle, or holes in the side of the product into which prongs of a weight-lifting bar can be inserted or a threaded insert into which a threaded end of the bar can be inserted. The invention also allows a bar to be extended into or through the weight unit to which additional weights can be attached

An exercise device combines a dumbbell and a kettlebell in a single weight that can be used as either a dumbbell or kettlebell, which can also be used in tandem with one unit at the end of a weight-lifting bar, with a hollow center handle, or holes in the side of the product into which prongs of a weight-lifting bar can be inserted or a threaded insert into which a threaded end of the bar can be inserted. The invention also allows a bar to be extended into or through the weight unit to which additional weights can be attached

A weight adjustable dumbbell includes a handle and a first counterweight part and a second counterweight part respectively arranged at two ends of the handle. Each of the first counterweight part and the second counterweight part includes a plurality of dumbbell pieces. Each dumbbell piece includes a mounting hole. The weight adjustable dumbbell further includes an adjusting mechanism. The adjusting mechanism includes a rotating mechanism, a transmission shaft, a first transmission sleeve and a second transmission sleeve. The transmission shaft can drive the first transmission sleeve and the second transmission sleeve to move axially along the transmission shaft and cause distal ends of the first transmission sleeve and the second transmission sleeve to insert into or leave the mounting holes of portion or all of the dumbbell pieces, whereby the dumbbell pieces are fixed on or detached from the first counterweight part and the second counterweight part.

An exercise device includes a jug including a first external cutout portion and a second external cutout portion together forming an external cutout having a cross shape in the outer surface of the jug. The jug also includes a first, second, and third handle. The exercise device is configured to allow a user's wrist and forearm to enter the cutout portions.

An exercise device includes a jug including a first external cutout portion and a second external cutout portion together forming an external cutout having a cross shape in the outer surface of the jug. The jug also includes a first, second, and third handle. The exercise device is configured to allow a user's wrist and forearm to enter the cutout portions.

The present application relates to the field of sports equipment, in particular to a weight-adjustable dumbbell and a dumbbell assembly. The weight-adjustable dumbbell comprises a dumbbell grip bar assembly and dumbbell plate groups connected to two ends of the dumbbell grip bar assembly; each dumbbell plate group comprises at least two dumbbell plates; the dumbbell grip bar assembly comprises a rotary plate selecting mechanism used for loosening or selecting at least one dumbbell plate. The present application has the effect of conveniently adjusting the weight of the dumbbell.

An adjustable kettlebell device comprising a solid right circular frustum as a base, a post, a sleeve, one or more weight plates, one or more quick release clamps, and a removable handle. The post has an outer diameter compatible with standard weights, and a sleeve that slides over the post has an outer diameter compatible with Olympic weights. The handle is configured to facilitate an addition/removal of the weight plates, and may be swapped with different sized handles for use with different sized hands.

An adjustable kettlebell device comprising a solid right circular frustum as a base, a post, a sleeve, one or more weight plates, one or more quick release clamps, and a removable handle. The post has an outer diameter compatible with standard weights, and a sleeve that slides over the post has an outer diameter compatible with Olympic weights. The handle is configured to facilitate an addition/removal of the weight plates, and may be swapped with different sized handles for use with different sized hands.

An exercise bar assembly includes a pair of rotating grip assemblies, each including a generally planar frame and a hand grip mounted within the frame for rotation within in the plane of the frame. The rotating grip assemblies are attachable to opposite ends of a center bar assembly along the longitudinal axis of the bar assembly. A plate bar assembly is attachable to each of the rotating grip assemblies opposite the center rod, with the plate bar assembly aligned with the longitudinal axis to form a weight lifting bar. A user-selectable elastic band is engageable between the pair of rotating grip assemblies along the longitudinal axis so that the elastic band resists rotation of each hand grip in each of the rotating grip assemblies. The rotating grip assemblies of the exercise bar assembly allow for the full range of motion of the bicep, and the elastic band creates a resistance exercise through the bicep's full range of motion.