Abstract: 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.

Abstract: A squat rack mountable dip exercising system includes a frame that is removably positionable on and extended between a first guard and a second guard wherein the first and second guards are engaged with and extend forwardly from a squat rack. A grip is attached to the frame and is configured to be graspable by a person performing a dip exercise.

Abstract: A treadmill has a front or rear set of pulleys and a looped running belt. The pulleys rotate with the movement of the belt, e.g., when a user walks, jogs, or runs on the treadmill. The pulleys are mounted on a rotating roller tube so that the roller tube rotates with the pulleys. The roller tube is mounted on a stationary shaft using bearings on each side and a one-way device that allows the pulleys to rotate in one direction. The rotation direction corresponds to the movement of the top of the belt from the front to the rear of the treadmill. The one-way device prevents the pulleys from rotating in the opposite direction, preventing the top of the belt from moving from the rear of the treadmill to the front. The one-way device may be a sprag clutch. The treadmill may be a motor-less, curved treadmill.

Abstract: A barbell support assembly is provided, including: a base; a support arm, including a connection section and a hook section connected with a first end of the connection section, the connection section being rotatably connected to the base and swingable between a first position and a second position, the hook section defining a hooking space; and a restoration unit, connected with a second end of the connection section, biasing the support arm toward the first position; when a rod of a barbell is received within the hooking space, the barbell drives the support arm to move from the first position to the second position, and when the rod of the barbell is removed from the support arm, the restoration unit forces the support arm to return to the first position.

Abstract: A sports specific and injury preventing exercise device for exercising a user. The sports specific and injury preventing exercise device includes a frame and a pair of handles on the frame. The pair of handles are parallel to one another, configured to be parallel to a trunk of the user, offset relative to the frame, and on opposite sides of the frame. The sports specific and injury preventing exercise device also includes a flat support area in a middle of the frame, wherein the flat support area is configured to support one or more weight plates, and a sleeve attached to the flat support area. The sleeve is perpendicular to each of the pair of handles, perpendicular to the flat support area and located at a center point of the frame. The sports specific and injury preventing exercise device additionally includes one or more assist handles.

Abstract: An arm strengthening device comprises a telescoping rod having a plurality of ergonomic grips at a first end and a removable circular weight perpendicularly disposed at a second end.

Abstract: An electric generator which can be coupled to an exercise machine is described. The electric generator is connected to a power grid. Using the mechanical movements of the exercise machine, the generator can produce and feed electricity into the grid, thereby creating a decentralized grid system which is immune to node failures. The generator can communicate with a smart device of a user. The generator can inform the user of the amount of electricity generated by the user while working out. The generator or an application of the smart device can communicate this data to a service provider. Using this data, the service provider can pay the user for the electricity generated. In particular, the service provider can utilize a cryptocurrency to reward the user for the human generated electricity.

Abstract: A dumbbell facilitating weight adjustment is disclosed. The dumbbell includes a dumbbell rod assembly, multiple counterweight disks, and a base for placing the dumbbell rod assembly and the multiple counterweight disks. The dumbbell rod assembly includes a mandrel, fixed disks and gear rotating disks fixed on the left and right sides of the mandrel, positioning rings and multiple coupling flanges. Rotation interference devices for preventing a rotation of the mandrel are provided in the fixed disks. Unlocking devices for unlocking the rotation interference devices are provided on the base. The rotation interference devices include push rods arranged on front sides and rear sides of the positioning rings, pressing rods arranged on upper parts of the push rods and return springs arranged on upper parts of the pressing rods. The unlocking devices include push pillars arranged on the base and cooperating with the push rods.

Abstract: A weight adjustable exercise device includes a base unit and a handle unit. Two magnetically attractive members are spacedly disposed on the base unit. Two weight sets are supported by the base unit, and respectively have a plurality of weights. The handle unit includes a handle shaft, two anti-rotation modules non-rotatably sleeved around two opposite end portions of the handle shaft and insertable downwardly in the base unit, two weight adjusting modules respectively mounted on the anti-rotation modules, and two indexing discs rotatably mounted on the weight adjusting modules. Each weight adjusting module has selector assemblies rotated with the handle shaft to selectively engage with or be disengaged from the corresponding weights. Each anti-rotation module has a magnet member removably engaged with the corresponding indexing disc and movable by a magnetically attractive force of the corresponding magnetically attractive member to be disengaged from the corresponding indexing disc.

Abstract: The present invention relates to forearm fitness equipment having a first handlebar and a second handlebar which are arranged in a longitudinal direction. The first handlebar includes a twist guide part and a first spiral inclined surface formed on an end surface of one side of the twist guide part. The second handle bar includes a second spiral inclined surface on an end surface, which comes into contact with the first spiral inclined surface. The first and second spiral inclined surfaces extend spirally respective in an opposite rotational direction to each other. A spring is configured to provide an elastic force in a direction in which the first spiral inclined surface and the second spiral inclined surface come into contact with each other.

Abstract: An exercise rack enclosure system for providing an exercise rack which is concealable within an enclosure. The exercise rack enclosure system generally includes an enclosure including an interior space. An exercise rack is pivotably connected to the enclosure within the interior space. The exercise rack is adjustable between a collapsed position, in which the exercise rack is completely positioned within the interior space of the enclosure, and an extended position, in which the exercise rack extends out of the interior space of the enclosure for use. The enclosure may optionally include one or more doors for concealing the interior space and exercise rack when not in use. Various attachments may be stored in the enclosure and removably connected to the exercise rack for performing a wide range of exercise moves.

Abstract: An exerciser allows two new exercises to be performed. The new exercises enabled by the exerciser include a leaning miming in place exercise and 2) a traction in suspension exercise. Two identical rectangle-shaped supports, hinged on two adjacent vertical sides permit a user to grip upper horizontal handle-bars. When not in use, the exerciser can be folded, occupying a very small space.

Abstract: An exercise device for performing incline push-ups includes a base and a pair of upright frame members connected at their bottoms to the base. The exercise device includes a pair of bar support assemblies that movably travel along the upright frame members. Each bar support assembly includes a hollow base sleeve that surrounds one upright frame member and an arm that extends outwardly from the hollow base sleeve at an angle. The arm has a plurality of spaced notches formed therein. The bar support assembly includes an insert that slidingly travels within the hollow interior of the arm. The insert is biased by a biasing element that is disposed between the arm and the insert and the insert is biased in a direction toward the hollow base sleeve. The bar support assembly further includes a plurality of lock pieces that are pivotally attached to both the arm and the insert.

Abstract: A weight sled for fitness training that uses a plurality of resistance mechanisms to allow for adjustment of resistance. Depending on the configuration, wheel skid or slippage control may be provided by electronic monitoring of the angular velocity of one or more wheels and electronic adjustment of the resistance of any skidding or slipping wheels, bias correction and directional control may be provided by using a plurality of resistance mechanisms via differential adjustment of the resistance of the plurality of resistance mechanisms, and differential adjustment of the resistance mechanisms may be used to manually or automatically offset a directional bias in the sled, ground surface, or the athlete's abilities to keep the sled moving in a linear motion, and to prevent wheel skid on surfaces with differing friction coefficients.

Abstract: A bracket assembly includes a back plate with outer and inner sides and a pin opening extending therethrough. A clasp member has an extending portion and an encasing portion extending from the extending portion. The extending and encasing portions and the inner side of the body define a channel configured to receive a rack beam. A pin seated in the pin opening has a shank, and a head at the outer side of the back plate. The shank extends through the opening into the channel. The shank is configured to engage the rack beam within the channel. The head is welded to the outer side of the back plate. An extension member defines a support surface and includes pair of substantially J-shaped plates and a cover nested with the plates such that it forms the entire support surface and is substantially flush with sides of the substantially J-shaped plates.

Abstract: An exercise device including a base having a channel formed therein, and a wheel rotatably connected to the base. The exercise device additionally includes a support link having a first end portion slidably connected to the channel and a second end portion pivotally connected to the wheel. The exercise device further comprises a single platform having an upper surface sized to support both feet of a user. The single platform is connected to the support link such that the single platform moves in concert with the support link. A first rotation member is coupled to the single platform and configured to rotate relative to the single platform about a first rotation axis generally perpendicular to the upper surface.

Abstract: Disclosed are a weight-adjustable dumbbell and a dumbbell assembly. The dumbbell assembly includes a grip rod assembly and a dumbbell plate, wherein the grip rod assembly includes an outer rotary rod and a telescopic rod, the telescopic rod is telescopically connected to the outer rotary rod, the telescopic rod movably penetrates through the dumbbell plate, and a limit structure is provided between adjacent dumbbell plates for restricting an axial movement between the adjacent dumbbell plates. A dumbbell assembly includes one or more weight-adjustable dumbbells as mentioned above and a dumbbell base.

Abstract: An improved exercise machine has a stationary longitudinal monorail structure that extends between front and back end stationary exercise platforms, and an exercise platform mounted on a levitated carriage that is reciprocally movable along the monorail between the stationary platforms. Magnetic elements arranged on various opposing surfaces of the carriage and monorail generate magnetic forces that levitate and stabilize the carriage as it moves relative to the monorail thus substantially eliminating contact friction. Springs selectively attachable to the movable platform provide a resistance force for exercising. Pseudo-levitation and eddy brake elements on the carriage and monorail structure further stabilize the carriage and platform.

Abstract: A pivoting lower limb therapy device formed from a lever frame having a handle portion integral with its proximal end and a first orthotic portion adjacent to its distal end, a base frame having a second orthotic portion integral with its proximal frame end and a surface support portion integral with its distal frame end, with the lever frame rotatably attached to the base frame so as to permit the first orthotic portion to move across two dimensions relative to the second orthotic portion in response to an exertion of mechanical force on the handle portion. The pivoting lower limb therapy device may also include a strap assembly connected to and extending between the proximal end of the lever frame and the proximal frame end of the base frame so as to exert mechanical force on the two frame members.

Abstract: A free-weight lifting and support system used by a weightlifter. The system includes a left side support and a left free-weight holder. It also includes a right side support and a right free-weight holder. It further includes a lifting bar, the lifting bar located between the left and right side supports and separating the left and right side supports from each other, and the lifting bar is vertically adjustable relative to the left and right side supports at the same time. The left side support is connected with the right side support via at least the lifting bar such that the lifting bar, the left side support and the right side support are together simultaneously liftable from a ground position to a lifted position by the weightlifter and safely back to the ground position by the weightlifter.