Abstract: An adjustable weight dumbbell device includes a nesting tray and a plurality of weight plates with a radial recess and positioned parallel to each other on the nesting tray. A handle with a grip is provided, wherein rotating the grip in a first direction to one of a plurality of predefined positions, after the handle has been inserted through the aligned radial recesses of the weight plates to rest on the nesting tray, results in a set of selected number of weight plates that correspond to the selected predefined position, getting engaged with the handle which results in the selected number of weight plates moving out of the nesting tray along with the handle when the handle is moved away from the nesting tray.

Abstract: An exercise unit includes a pair of brackets configured to attach to a desktop in a spaced manner, resistance bands extend from a handle to the two spaced brackets wherein the handle is near a mid-point thereof. When attached to the desktop, the brackets maintain the resistance bands and handle generally underneath the desktop when not in use. When needed, the user grips the handle with two hands and is able to perform various exercises while seated in his or her chair. The handle is configured ergonomically to match the angle of the user's hands when gripping the handle from a seated position.

Abstract: The portable exercise device is a physical training device. The portable exercise device is an elastic structure that generates a counterforce used to exercise muscles. The portable exercise device comprises a plurality of resistance bands, a plurality of supporting bars, and a plurality of carabiners. The plurality of carabiners attaches the plurality of resistance bands to the plurality of supporting bars. Each of the plurality of supporting bars is a rigid structure to which the plurality of resistance bands anchors. The plurality of supporting bars are manipulated to apply deformation forces to the plurality of resistance bands during the use of the portable exercise device. The plurality of resistance bands generates the counterforce used to exercise muscles as each of the plurality of resistance bands returns to the relaxed shape.

Abstract: A dumbbell having a shaft, first and second dumbbell heads, respectively fixedly connected to first and second ends of the shaft, a tube-shaped hollow grip rotatably arranged around the shaft having first and second ends. An inner diameter of the grip is greater than an outer cross-sectional dimension of the shaft. The dumbbell further having a first ball bearing and a second ball bearing, wherein an outer ring of the first ball bearing is connected to the first dumbbell head, and an inner ring of the first ball bearing is fixedly arranged to the first end of the hollow grip, and an outer ring of the second ball bearing is connected to the second dumbbell head, and an inner ring of the second ball bearing is fixedly arranged to the second end of the hollow grip.

Abstract: A trampoline frame includes a bottom ring frame to couple to a jumping surface, a plurality of legs coupled to the bottom ring, a plurality of curved upright supports coupled to the bottom ring, and a handrail coupled to the upright supports. The curved upright supports attach to and support a flexible wall to form a barrier around at least a portion of the jumping surface. Each of the plurality of legs is curved to place a corresponding foot of the leg outside an external perimeter of the bottom ring frame when connected to the bottom ring frame. Each of the plurality of curved upright supports is curved inward toward a center of the jumping surface to connect to the handrail.

Abstract: A stationary exercise device comprises pedals mounted via cranks to opposite sides of a drive wheel; a flywheel with a magnetic rim coupled to the drive wheel; a brake with a motor and one or more permanent magnets mounted for movement relative to the magnetic rim; a measuring unit for measuring at least one of the drive force applied via the drive wheel and the related torque; a measuring device for measuring cadence; and a command module. The command module uses measurements from the measuring unit and the measuring device to calculate a performance parameter and compares the performance parameter against a predetermined performance profile. The command module also can control the motor to move the permanent magnets relative to the magnetic rim to adjust the braking force applied and thereby adjust the performance parameter to conform with the performance profile.

Abstract: A device and method may be provided including at least one handle and at least one anchor point. The device may be operable to provide a resistance to a user of the device who fixes the device using the anchor point and pulls on the handle. The device may include a casing; a center rod rotatable mounted in the casing; a cable wound around the center rod and coupled to the handle; and a mechanism mounted on the central rod. The mechanism may be responsive with a centrifugal force to movement of the cable to rotate the central rod. The mechanism may include an anchor coupled to the central rod, and at least one weight connected by a wire to a ring that is movable along the central rod against the resistance of a spring.

Abstract: A dumbbell system a plurality of weights vertically stackable on top of each other and each of the weights has a pair of outer edges disposed oppositely from each other to define a first lateral edge and a second lateral edge. The weights each have a centrally displaced opening vertically extending therethrough and defining a receiving space. The receiving space of each weight is vertically aligned with the receiving space of each of the other weights. A handle is removably extendable into the receiving space. A coupler releasably engages a selected one of the weights to the handle and defines a coupled weight. The coupled weight and each of the weights positioned above the coupled weight is releasably secured to the handle. Each of the weights positioned below the coupled weight are disengaged from the handle.

Abstract: The invention discloses an electronically controlled adjustable dumbbell comprising a handle grip, a weight stack, a base, an end cover, an electronic control system and a weight stack locking structure, wherein the weight stack is located below the handle grip. The invention solves the existing problems of adjustable dumbbells as follows: firstly, the operation is so complicated and cumbersome that it is quite difficult to adjust the weight in one try, and the novice who is new to the adjustable dumbbells cannot quickly adjust the weight plate; secondly, visually the product looks too complicated since the number that needs to be adjusted is printed on the cylindrical surface, and half of the numbers on the handle surface are located below the handle grip, which is difficult to see by the user; thirdly, the lack of modernity and inadequate aesthetics hinders product sales and makes it difficult to make profit quickly.

Abstract: A dumbbell system a plurality of weights vertically stackable on top of each other and each of the weights has a pair of outer edges disposed oppositely from each other to define a first lateral edge and a second lateral edge. The weights each have a centrally displaced opening vertically extending therethrough and defining a receiving space. The receiving space of each weight is vertically aligned with the receiving space of each of the other weights. A handle is removably extendable into the receiving space. A coupler releasably engages a selected one of the weights to the handle and defines a coupled weight. The coupled weight and each of the weights positioned above the coupled weight is releasably secured to the handle. Each of the weights positioned below the coupled weight are disengaged from the handle.

Abstract: A power rowing machine that combines the seat of a rowing machine with a weight arm for resistance training. The power rowing machine avoids the flywheel of a conventional rowing machine and instead uses a weight arm. The weight arm serves two purposes. First, weight can be added to the arm for progressive resistance training. Second, the pivoting action varies the resistance through the movement. As a slow controlled resistance exercise the back and the arms of the rowing stroke cannot move the same resistance as the legs. Similarly, a user at the beginning of the rowing motion, with the legs compressed, cannot move as much resistance as with knees at a 90-degree angle.

Abstract: A reformer includes a generally rectangular frame, a movable carriage mounted on the frame for movement between head end and foot end of the frame, and a plurality of springs biasing the carriage toward the foot end of the frame. The carriage has at least four roller wheels. A carriage drag adjustment device in accordance with the present disclosure generally includes a drag generator configured to apply an opposing force to at least one roller wheel of the wheeled reformer carriage, a mounting assembly fastening the drag generator to the wheeled reformer carriage, and an adjustment mechanism coupled to the drag generator to adjust the amount of drag applied to at least one roller wheel mounted to an underside of the reformer carriage, thereby opposing movement of the wheeled reformer carriage between the head and foot ends of the frame.

Abstract: A portable exercise device provided includes: a base disc, two pulley assemblies, a support plate, and a fan wheel assembly. A support plate is disposed on the base disc, the two pulley assemblies are provided on the base disc, and the fan wheel assembly is provided on the support plate, so that the fan wheel assembly and the two pulley assemblies are vertically arranged on top of each other, thereby reducing the overall volume. More preferably, because the volume is reduced, the user can arbitrarily move and hang the portable exercise device at the desired position, and because the portable exercise device of the invention can be hung at different positions, which allows the user to train different muscles according to the different positions.

Abstract: A weight sled that allows both linear and non-linear movements such that resistance training can be performed in the frontal, sagittal, and combined frontal/sagittal planes, and which allows easy movement for transportation, storage, and retrieval from storage. The weight sled uses one or more swiveling, pivoting, or omni-directional wheels that allow all or a portion of the sled to be moved laterally. The addition of wheel configurations allowing of lateral movement of all of, or a portion of, the weight sled greatly expands the utility of weight sleds because movement in any direction can be trained, whether in the sagittal body plane (forward/backward movements), the frontal body plane (lateral movements), or a combination of the two. Additionally, the plurality of wheel configurations allows for a variety of storage arrangements.

Abstract: A variable difficulty balance board for standing desk and fitness use is provided. The balance board facilitates the conditioning and rehabilitation of the nerves, bones, muscles, and joints of the body by limiting the range of motion and biomechanical forces around the longitudinal and lateral axes. The balance board comprises a deck, a fulcrum receiver, and a fulcrum insert. The fulcrum insert is press-fit into a fulcrum cavity of the fulcrum receiver. The fulcrum insert extends outward from the fulcrum receiver and provides an area where the balance board can pivot. The fulcrum insert may be replaced by the user such that it may occupy either a first orientation or a second orientation within the fulcrum cavity. The first orientation and the second orientation configures the fulcrum insert such that it provides a lateral or longitudinal axis of balance relative to the deck, respectively.

Abstract: A stretching and exercising device is beneficial for torso flexibility, having a configurable structure in which the curvature of the platform is adjustable. The platform can be varied in curvature from a substantially flat configuration to a generally semi-circular configuration. The platform is supported by a gear train connected to the platform, wherein the platform has a plurality of discrete parts. An adjustment member having a manually adjustable variable length connects opposite ends of the gear train, so that the curvature of the platform is determined by the adjusted length of the adjustment member.

Abstract: Balance training aids are disclosed. Example embodiments disclose a user placing all or part of their body weight on a top surface of a platform that is sitting atop an unstable base member and attempts to balance or complete a balance challenge. In example embodiments, the user places at least a portion of one foot atop the platform during the balance challenge. Adjustability features can be provided so as to provide a varying degree of adjustability to the unstable base member, and thus, provide a varying degree of balance challenges or levels of difficulty.

Abstract: An exercise device for performing squat movement including a base part for supporting the device against a surface, a first tube member attached to the base part, a second tube member movable with respect to the first tube member, an elastic member resisting the downward movement of the second tube member and moving upward the second tube member with respect to the first tube member, and a seat member for pressing down the second tube member, the seat member being attached to the second tube member.

Abstract: A weight delay device for weight training equipment includes a delay member vertically movable between a second top dead point and a second bottom dead point, and a locking assembly vertically movable with the main weight device of the weight training equipment and having a positioning member selectively locatable at a first position or a second position. When the positioning member is located at the second position and the main weight device starts to move from the first bottom dead point to the first top dead point, the positioning member and the delay member are combined with each other, so that the delay member moves with the main weight device to the first top dead point.

Abstract: A bouncing shoe-holder includes a shoe holder for holding a shoe worn by a user, a bouncing unit and a fastening unit. The bouncing unit includes an upper resilient member having a downward curving configuration and a lower resilient member having an upward curving configuration coupled thereto in an end-to-end manner to define a bouncing cavity therebetween. The fastening unit includes a fastening member supported within the bouncing cavity to directly fasten the bouncing unit at a bottom side of the shoe holder.