Abstract: An exercise device configured to provide for a lifter performing a bent-over row exercise. The exercise device provides lower back support and stability to the lifter. Embodiments of the device may be attachable to an exercise rack or be configured as a standalone device. An embodiment of the exercise device may comprise an adjustable support pad configured to support the chest of a lifter. The adjustable support pad rotates about an axis to optimize comfort and alleviate lower back strain during bent-over row exercises.

Abstract: A dynamic exercise device having a hand grip mounted in an inner ring, the inner ring mounted in an outer ring, and the outer ring mounted in a base. Each of the above elements is movable in at least one degree of freedom relative to each of the other elements. Optionally, the base has feet. The feet may be fixed elements that provide immobility, or dynamic elements, such as roller bearings, that may provide adjustable movement.

Abstract: Disclosed herein are methods of exercising human arms, including a method of exercising human arms that may include: 1) providing an arm exercise assembly, comprising: a) a frame; b) a wheel coupled to the frame; c) two locks disposed on the wheel; and d) a handle coupled to the wheel; 2) coupling the two locks to the wheel; and 3) abutting the handle against one or both of the two locks.

Abstract: An apparatus for use with a robot may couple to or form part of an appendage, for example a wrist. The apparatus can include a base, a first platform, a second platform, a first set of linear actuators that moveably couple the first platform to the base and a second set of linear actuators that moveably couple the second platform to the first platform. The apparatus can take the form of dual prismatic platforms. A controller can provide control signals to operate the linear actuators to cause the first platform to translate and rotate with respect to the base and to cause the second platform to translate and rotate with respect to the first platform. Connectors can couple the base to an appendage and couple an end effector to the second platform.

Abstract: An ankle foot orthosis includes a leg member, a foot member, and a drive member. The drive assembly includes a link member which may be hingedly secured to the foot member at a hinge location adjacent to the posterior end of the foot member. The drive assembly may be operable to selectively impart pivotal movement between the foot member and the link member about a first pivot axis, and pivotal movement between the foot member and the leg member about a second pivot axis at the hinge location. The leg member and the foot member strut may be selectively movable in a medial-lateral direction relative to a base of the foot member and the drive assembly. The inferior-superior location of the second pivot axis may be selectively adjustable for substantially aligning the second pivot axis with an axis of rotation of an ankle joint of the wearer.

Abstract: A method of using a resistance training device including mounting a mounting device onto a game table, wherein a placement of the mounting device onto the game table corresponds to an opening on a sidewall of the game table, and utilizing a resistance article with a game table rod that extends into a game space of the game table, the resistance article coacting with the game table rod to gradually increase a resistance during rotation of game table rod is provided.

Abstract: The present invention provides method and apparatus to perform combined cognitive and motor rehabilitation on a computerized non-portable system or on single portable device. A patient can play a variety of games that require the patient to perform a variety of memory exercises which involve physical exertion. The activities of the patient are monitored with pattern analysis software which provides feedback to the patient. The feedback can include voice synthesis, video guidance, progression messages etc. Patient data obtained while the patient is performing each of the memory exercises is stored locally on a database module and then uploaded to a cloud server. A remote psychologist/psychiatrist monitors the patient by logging into the same cloud, and updating cognition exercises. The same therapist can have live chats with the patient for further interaction and coaching.

Abstract: A wrist exercise device includes a housing having circular portions, a grip handle extending across an inner area of each circular portion of the housing, with both ends of each grip handle being rotatably engaged in a circular direction with the circular portion of the housing, and a spring positioned within each circular portion of the housing. The elastic force of the spring between the grip handle and the housing is increased when the grip handle rotates in any direction.

Abstract: A therapeutic exercise device includes an elongated, hollow tube having a sleeve slidably and rotatably mounted thereon. The sleeve is held on the tube by a pair of opposing retainers, each having a rounded end cap attached thereto. Either cap is removable to expose an interior chamber for receiving a desired number of weighted cylinders that vary the overall weight of the tube. Accordingly, a user loads the chamber with a desired number of weighted cylinders and grasps the tube with one hand. The sleeve is grasped and reciprocally rotated with the other hand to exert the hand, wrist and forearm muscles.

Abstract: A disc holder dock includes a top cover having an opening for a driving wheel. The top cover has a cradle area for docking a gyroscopic wrist exerciser. The top cover further has a guide vane for directional guiding of the gyroscopic wrist exerciser. The top cover has a top cover sidewall. A middle frame mounted to the top cover. The driving wheel is mounted to the middle frame. The driving wheel is connected to the middle frame by a support. A lower plate is for holding a disc. The lower plate has a lower plate upper side and a lower plate lower side. The lower plate further includes a disk storage area.

Abstract: An exercise device including a frame having a proximal end and a distal end is presented, the frame further includes a first opening and a second opening, a first handle assembly configured to be coupled to the frame via the first opening, and a second handle assembly configured to be coupled to the frame via the second opening. The frame further includes an electronic circuit assembly for coaching a user, the coaching of the user involving at least counting, continuously and in real-time, a number of exercise repetitions performed by the user.

Abstract: The present invention provides for an exercise apparatus for assisting in performing a push-up exercise. The apparatus includes a base with a convex outer surface connected to the handle support structure and a handle. The convex outer surface of the base of the apparatus provides a user with a means to engage muscle groups not normally exercised during a conventional push-up exercise, through the action of continuously stabilizing their weight on the apparatus, and by providing a means to rotate the wrists during the exercise. The apparatus also provides a user with a means to perform the exercise at different widths and positions during the exercise, by repositioning (sliding or moving) the apparatus during the exercise, on an appropriate surface. The apparatus is also intended to be lightweight and compact enough to be transportable for activities such as jogging or running.

Abstract: A new weighted ball exercise device is disclosed. The ball has handles connected to covers located on opposite sides of the ball. The handles rotate 360 degrees clockwise or counterclockwise. The handles alleviate stress on the user's wrists and provide a firm grip. The ball has an internal weight storage compartment or weight drawer that may be opened to permit adding or removing weights of various sizes and weights. The compartment can be axially located between the covers, and be locked and unlocked by action of spring-loaded button mechanism. In another embodiment, the ball has opposing rotatable covers with handles and grips. Weights are removably insertable into one or more recessed compartments located about the ball's outer surface, and may be radially spaced apart. A kettle bell handle attachment can be inserted into the outer surface to permit conversion of the ball to a kettle ball device.

Abstract: A resistance training device comprising a mounting device, the mounting device configured to removably mount onto a game table, a resistance article configured to be operably attached to a game table rod that extends into a game space of the game table, the resistance article having a thickness that tapers from a minimum thickness to a maximum thickness, wherein the resistance article extends through a non-uniform opening of the mounting device, wherein a resistance is gradually increased during rotation of the resistance article is provided. Furthermore, an associated method is also provided.

Abstract: A wrist training apparatus includes a housing, a rotation component disposed in the housing, a signal emission assembly and a counter. The rotation component includes a shaft and an annular wrapper wrapping the shaft and including an outer and inner surfaces and receptacle hole extending from the outer to the inner surfaces. A hole wall of the receptacle hole includes a stopper part. The signal emission assembly is disposed in the receptacle hole and includes a holding cover disposed in the receptacle hole and including a first holding structure in the receptacle hole and a second holding structure protruding from the inner surface and a signal emission device. The first and second holding structures are leaned against the stopper part and inner surface respectively. The signal emission device is disposed in the holding cover. The counter is disposed in the housing and senses signals from the signal emission device.

Abstract: A hand therapy system including a post having an upper end and a lower end, a support base secured to the lower end of the post for supporting the post atop a surface, and a hand exercise housing mounted on the post for moving between the upper and lower ends of the post. The hand exercise housing includes a plurality of first hand tool openings provided on a first side of the hand exercise housing, a plurality of second hand tool openings provided on a second side of the hand exercise housing, a progressive resistance system in communication with each of the first and second hand tool openings, and a plurality of resistance level adjustment elements coupled with the progressive resistance system. Each of the resistance level adjustment elements is associated with one of the first and second hand tool openings for selectively adjusting the resistance level of each of the first and second hand tool openings.

Abstract: The system provides an exercise device where resistance is provided by one or more of gyroscopic forces, centrifugal forces, magnetic forces, torus forces symmetric field physics, electro-mechanical forces, mass shaping, frequency dynamics, etc. In one embodiment, a handheld device with an internal flywheel is provided. The flywheel is spun up to a desired speed and provides a gyroscopic resistance to movement in a particular direction relative to the orientation of the device. By holding the device in a particular orientation and attempting to move the device against the gyroscopic effect, resistance is provided for exercising. The device itself is relatively light so that the resistance exists principally when the device is being moved. In one embodiment, the rate of rotation of the flywheel can be controlled via an on-board control so that the resistance can be increased or decreased during exercise movement.

Abstract: An exercise device for exercising hand, wrist, arm, and upper body muscles having adjustable force resistance and a force setting indicator. The exercise device includes a housing, a first handle connected to one end of the housing, a second handle connected to the opposite end of the housing, an inner spring disposed inside the housing, and an outer spring disposed inside the housing. The outer spring is connected to the inner spring and encases the inner spring. An adjuster knob disposed on the second handle and coupled to the inner spring and configured to adjust a tension of the inner spring and compression of the outer spring.

Abstract: Invention to drive the handling of a hockey stick (the Stick Handling) by strengthening the hand's pronator and supinator muscles in order to improve the control, speed, strength and technique for handling a hockey puck. The exerciser primarily use is to isolate the pronation-supination movement so younger and older users, experts and beginners, professional and amateur are able to develop and identify the most accurate gesture to perform perfectly puck dribbling. The flexion-extension of the elbow is a common mistake among hockey players and can therefore be avoided. Thereafter, when the correct movement is well assimilated, the exerciser can be used to improve the movement quality, speed and/or strength.

Abstract: The invention is directed to a device to train bilateral, cooperative hand functions of a subject with housing means, handle means comprising two exchangeable handles (1), namely a left handle and a right handle, shaft means comprising multiple shafts and couplings for coupling said shafts (2), clutching means comprising variable slipping clutches (3), said slipping clutches being adjustable, first sensor means (4) for measuring the angular position of each of said handles (1), second sensor means (5) for measuring the torque which is applied by the subject onto each of said handles (1), locking means (6) for locking said shaft means (2) wherein both handles can be rotated independently when said locking means are locked, wherein said locking means are positioned between said second sensor means so that said second sensor means for the left handle can measure the torque applied onto the left handle and said second sensor means for the right handle can measure the torque applied onto the right handle when the

Abstract: An exercise device comprises a pair of outer handles and an inner, central disk, rotatable relative to the handles. The disk includes at least a pair of orifices formed therein or therethrough. At least one tether or cord extends between the handles and through the orifices in the central disk. Manipulation of the handles by a user results in cyclic spinning of the disk.

Abstract: A new weighted exercise ball is disclosed in the present invention. The ball has handles on each side of the ball which rotate 360 degrees clockwise or counter clockwise. The handles alleviate stress on the wrists and provide a firm grip. The ball has inner compartments that slide outward and allows for the entry of weights of various sizes.

Abstract: One example embodiment includes a resistance chamber for use in an exercise system. The resistance chamber includes a first chamber and a second chamber. The second chamber is configured to attach to the first chamber and rotate relative to the first chamber. The resistance chamber also includes a core rod. The core rod resides within the first chamber and the second chamber and is attached to the interior of the second chamber. The resistance chamber further includes a resistance tube, where at least of a portion the resistance tube is configured to be placed between the interior surface of the first chamber and the core rod.

Abstract: An exercise device comprising a bottom support plate and a mounting bolt affixed thereto and having an externally threaded vertical stem, one or more plates superposed on the bottom support plates, each plate having a central bore through which extends said vertical stem. A hand gripped uppermost plate has a lower surface in mating relation with the top plate, a central internally threaded bore in said lower surface of the hand grip plate for threadedly engaging the end of said externally threaded stem. A dome shaped palm support on the upper surface of the hand grip plate and five finger gripping holes on the supper surface of the hand grip palm support plate around the dome shaped palm support sized for inserting the fingers of the exerciser and to lift and lower the device during exercise.

Abstract: A wrist training apparatus includes a housing, a rotation component disposed in the housing, a signal emission assembly and a counter. The rotation component includes a shaft and an annular wrapper wrapping the shaft and including an outer and inner surfaces and receptacle hole extending from the outer to the inner surfaces. A hole wall of the receptacle hole includes a stopper part. The signal emission assembly is disposed in the receptacle hole and includes a holding cover disposed in the receptacle hole and including a first holding structure in the receptacle hole and a second holding structure protruding from the inner surface and a signal emission device. The first and second holding structures are leaned against the stopper part and inner surface respectively. The signal emission device is disposed in the holding cover. The counter is disposed in the housing and senses signals from the signal emission device.

Abstract: A ball-shape brawn training device includes a casing, a ring, a ball body. The ring is configured in the casing and movable relative to the casing. The ring includes a first pivot part and a second pivot part opposite to each other, a first ring section and a second ring section connected to the first pivot part and the second pivot part respectively. The ball body is couple to the first pivot part and the second pivot part and is rotatable relative to the ring. The second pivot part is composed of a first assembly portion and an assembly on the ring. As a result, when the ball-shape training device is equipped more additional elements, the ring can be quickly assembled to the ball body.

Abstract: A gyroscopic exerciser starting dock has a starter dock housing and a starter dock axle mounted within the starter dock housing. A driving wheel is mounted to the starter dock axle. A retractable pull cord grip sleeve device is mounted to the starter dock axle and has a pull handle attached to a pull cord. The pull handle is for pulling the pull cord, and the pull cord is attached to the handle at a pull cord first end. A spool receives around it a pull cord and a pull cord is attached to the spool at a pull cord second end. The spool member receives and stores the pull cord in a coil around the spool.

Abstract: An exercise machine for strengthening the foot and for treating plantar fasciitis includes a foot pad for receiving a patient's foot and a resistance member associated with the foot pad. As the patient pivots the foot pad on a pivot pin located near the heel section of the foot pad, a resistance is applied to the toe section of the foot pad thereby providing strengthening for the plantar fasciitis band of tissue.

Abstract: The present invention provides an improved universal, multidirectional exerciser for exercising hand, wrist and forearm in multiple planes of motion with adjustable resistance. The invention also provides a method of exercising wrists, hands and forearms by holding the handle in one hand and the knob/grip member in the other hand, and repetitively twisting the handle and knob/grip member in opposite directions. A detachable grip member is mounted over the knob and the detachable grip member further comprises a gyro ring and a squeeze grip strengthener.

Abstract: A multifunction dumbbell includes a handle having two projections on both ends respectively; two hollow weight members each having a protrusion extending toward the handle; two spacer sleeves each having a closed flange fixedly secured to a joining portion of the handle and either projection, with the spacer sleeves fixedly fastened between the protrusions and the projections; two rings each having an inner diameter less than an outer diameter of the weight member so that the rings can be put on the weight members and retained thereon respectively; two half-spherical members each fixedly secured to the ring and complimentarily engaged with the weight member; and two truncated conic springs each put on the protrusion and a portion of the weight member to be retained between the spacer sleeve and the ring. The rings and the half-spherical members together are adapted to rotate about the weight members.

Abstract: The hand exercising glove device is a glove having a back side spaced apart from a palm side, a quintet of digits extended from the back side and the palm side, each digit comprising an open end disposed at an existing fingertip of a user, a pad disposed within the back side atop each base knuckle of a user, a wrist section extended from the back side and the palm side, an adjustable retaining strap encircling the wrist section, a digit reinforcement encircling each digit back side adjacent to each open end, a back side reinforcement embedded within the back side adjacent to the wrist section, a hook disposed on each digit reinforcement, a plurality of spaced apart hooks disposed on the back side reinforcement, and an elastic tensioned strand connecting each back side reinforcement hook to one of each of the digit hooks, the tensioned strands disposed over four of the pads.

Abstract: Rotation mechanism for a forearm which includes a moving stay (2) which supports a wrist, which includes at least one guide track in the form of an arc of a circle, a fixed stay (4) which supports the rear end of a forearm, rods (12) that are rigid lengthwise which link the moving stay (2) and the fixed stay (4) and which allow the moving stay (2) and fixed stay (4) to rotate around a longitudinal axis (Z), by means of articulated links which can rotate (14), and a strut (6) rigidly linked at one of its ends to the fixed stay (4), and linked at its other end to a roller-bearing, whose rollers are in rolling contact with the guide track of the moving stay (2), and which cause the moving stay (2) to pivot around a longitudinal axis (Z), where the direction of said longitudinal axis (Z) passes through the centre of the arc of the circle of the guide track and through the centre of a circle defined by the ends of rods linked to the fixed stay.

Abstract: A configurable exercise system which may be transformed into multiple pieces of exercise equipment is disclosed. More specifically, embodiments provide an adjustable-weight medicine ball with two halves that may be separated and used to implement dumbbells, kettlebells, push-up bars, or other pieces of exercise equipment. Each half of the medicine ball may have a handle and/or features for accepting one or more weighted objects for varying the weight of each half. Additional components may be joined to one or both halves of the medicine ball to implement other pieces of exercise equipment. Additionally, components may be inserted between the halves of the medicine ball to implement other pieces of exercise equipment. Further, in one embodiment, the exercise system may be easily and quickly transformed, compact in size, and relatively low-cost.

Abstract: A wrist exerciser with a handle and multiple hold positions includes a first exercise ball body and a handle. The first exercise ball body has a first opening, a rotor, and a first hold position for driving the rotor to rotate. The first opening is disposed at a side of the first exercise ball body. The rotor is disposed inside the first exercise ball body. The handle is connected to the other side of the first exercise ball body where the first opening is disposed. The handle is coaxially corresponding to the first opening, and has a second hold position for driving the rotor to rotate, so as to provide multiple hold modes for a user to carry out wrist exercise modes of different postures, thereby increasing interests and enhancing comprehensiveness of forearm muscle exercises.

Abstract: An exemplary housing of a wrist exercising device includes a first cover, a second cover and a fixing ring. The first cover has a first bowl part and a first annular joining part. The first bowl part has a first opening end, and the first annular joining part extends from the first opening end. The second cover has a second bowl part and a second annular joining part. The second bowl part has a second opening end, and the second annular joining part extends from the second opening end. The fixing ring joins the first and second annular joining parts. A wrist exercising device using the housing is also provided.

Abstract: A gyroscopic exercise ball (10) includes a housing (10a, 10b) surrounding a rotor (12) centrally disposed on a shaft (14) having two ends (28) mounted in notches (26) of a freely rotatable gimbal ring (24). The ring and the ends of said shaft are disposed in a groove having a height larger than a diameter of the ends of the shaft. The diameter is larger than a thickness of the gimbal ring, and a rotation rate sensor (60) measures the rotor speed. A processor (110) is in communication with the rotation rate sensor to calculate an exercise evaluation. A pitch axis and a roll axis gyroscopic sensor (80, 70) are in communication with the processor. The exercise evaluation determines energy expenditure, force, power, angles or angular velocity of motion, range of motion, position, speed or trajectory of motion, and an evaluation of form for an individual exercise.

Abstract: A roofing worker safety device is provided that delivers a resistive force in response to a worker falling from an elevated work surface such as a roof via a safety cable connecting the worker to the safety device, the cable transmitting the force of the falling worker to the device to activate an arrestor arm that is forced into the surface on which the safety device is placed thereby stopping the fall of a worker from the roof.

Abstract: An interactive exercise device includes a stationary base to which a first exercise implement is movably connected. A first resistance element is operably connected to the first exercise implement to provide resistance against at least some movements of the first exercise implement relative to the stationary base. An interactive motion guide that directs a user of the interactive exercise device to move the first exercise implement relative to the stationary base in an indicated manner is operably connected to the interactive exercise device. The interactive motion guide includes first and second electronic indicators to which a processor is operably connected. A non-transitory and tangible computer readable medium is operably connected to the processor and includes instructions to manipulate output of the first and second electronic indicators in response to movement of the first exercise implement relative to the stationary base.

Abstract: A novel exercise device that permits opposing movement of two distinct substantially equal length end portions around a single axis is provided. Such a device permits a user to exercise the muscles in his or her wrists and forearms through rotational movement in opposing directions simultaneously. The novel device includes a tightening means to adjust the resistance of the two end portions in order to accord the user different levels of tension for selected levels of muscle workout. As such, the inventive device, being of a very small construction is easy to store and transport, further permitting the user the capability of undertaking such an exercise regimen in any selected location. A method of utilizing such a unique, small-construction exercise device is encompassed within this invention also.

Abstract: An exercise handle for use with a cord and a method for the use thereof, the handle having a channel portion having at least two channel ends that are positioned non-diametrically relative to each other on the channel portion, the channel portion being rounded relative to a center point; a channel being fashioned on the channel portion, the channel being adapted to receive the cord; a grip portion being positioned between the at least two channel portion ends in an off-center relationship to the center point of the channel portion.

Abstract: The present invention provides a multidirectional exerciser for hand, wrist and forearm comprising a handle having an axial opening through which a bolt extends. A spring means is around one end of the bolt disposed against an adjustment ring. A resistance knob is mounted on the adjustment ring. A pressure plate is mounted at the opposite end of the handle between the handle and the head of the bolt. At least one clutch disc is disposed against the pressure plate. A knob is mounted around the pressure plate and clutch disc, mounted for relative rotational movement with respect to the handle. The wrists and hands are exercised by holding the handle in one hand and the knob/grip member in the other hand, and repetitively twisting the handle and knob/grip member in opposite directions. A detachable grip member is mounted over said knob and the detachable grip member further comprises a gyro ring and a squeeze grip strengthener.

Abstract: The present invention relates to a hand-eye coordination training apparatus designed for all sports enthusiasts and martial artists seeking hand speed timing and accuracy. The apparatus offers unpredictable vertical and horizontal target movement, as well as instant adjustability to change the tension and height of the target. This allows the target to travel at varied heights, speeds and distances. The apparatus is effective in isolating the skill of hand eye coordination because it provides minimal resistance. The apparatus is completely portable and can be assembled in any environment in a matter of seconds.

Abstract: A wrist exerciser that uses nested semi spheres to work the wrists. It has an outer bowl-shaped housing that can be mounted to a wall, or can he held by the user using a special glove. A second bowl-shaped device called the pendulum has a handle in the center and fits within the housing. A third member called a pressure bowl is fitted into the outer housing. The pressure bowl has an open bottom to let pendulum handle pass through the bottom of the pressure bowl. The user tightens the pressure bowl down to increase the tightness of the pendulum within the outer housing. A user can mount the device on a wall or grip the bottom of the outer bowl. Then, the user holds the handle on the pendulum and rotates the pendulum around the outer housing, back and forth in any desired direction to work the wrist.

Abstract: A press bar for supporting a weight during a weightlifting exercise includes a body that has a first end, a second end, and a body-axis that passes through the first and second ends, wherein the body-axis is substantially horizontal when the press bar lies on a substantially horizontal surface. In addition to the body, the press bar includes a handle connected to the body. The handle includes a grip positioned relative to the body-axis. The grip has a longitudinal axis lying in a plane that is vertical when the press bar lies on a substantially horizontal surface. The position of the grip relative to the body-axis is such that the body-axis does not intersect the grip, but does intersect the plane at an angle between 45° and 135°.

Abstract: An exercise device for strengthening the hands, wrists and forearms includes a main body providing a hand grip and an arm member linked to one end of the main body by a ball joint assembly to allow pivoting movement of the hand grip relative to the arm member. A selectively adjustable drag assembly imparts a variable controlled force of resistance to the rotational movement of the hand grip about a central longitudinal axis. The exterior of the main body is formed of a resilient rubber material, such as a spongy foam rubber, and is textured to include segmented ribs to simulate a hand grenade shell. A flexible strap with a releasable fastening mechanism attaches between a distal end of the arm member and the user's wrist to effectively anchor the arm member to the user. While grasping the main body, the user turns his/her hand forwards and backwards in a rotating motion against the resistance of the drag assembly.

Abstract: An improved exercising machine comprising a framework, support members carried by the framework, a pair of guide assemblies with at least two degrees of freedom mounted on a respective support member for movement of the respective guide assembly, a pressure bar or handle moveably connected to a guide assembly, at least one resistive means connected to the framework, force transfer means providing connection between the respective guide assemblies and the resistive means, and dampening means to dampen the movement of the respective guide assembly slidable members which serve to prevent sudden and erratic movements of the guide assembly slidable members.

Abstract: The current invention is an exercise apparatus and method adapted for use with a leg exercising machine, the exercise apparatus including a base, a support beam having a proximal end and a distal end, wherein the proximal end portion extends from the base. Further included in the exercise apparatus is an omni-directional movable joint element that is disposed adjacent to the distal end portion and a grasping arm, with the grasping arm being received within the omni-directional movable joint element, wherein the grasping arm is operational to have omni-directional movement relative to the support beam. Also included in the exercise apparatus is a dampening element that is disposed between the support beam and the grasping arm, the dampening element is operational to dampen the omnidirectional movement such that an individual using the leg exercising machine can grasp the arm for stability and support for a soft skeletal joint support.

Abstract: A light-emitting control circuit and a wrist training ball using the same are described. The wrist training ball includes a light-emitting device. The light-emitting device includes an electricity generating circuit and a light-emitting control circuit. The electricity generating circuit generates electric power by rotational kinetic energy of the wrist training ball and outputs the electric power to the light-emitting control circuit. The light-emitting control circuit includes first and second light-emitting elements.

Abstract: An exercise device for strengthening the hands, wrists and forearms includes a main body providing a hand grip and an arm member linked to one end of the main body by a ball joint assembly to allow pivoting movement of the hand grip relative to the arm member. A selectively adjustable drag assembly imparts a variable controlled force of resistance to the rotational movement of the hand grip about a central longitudinal axis. The exterior of the main body is formed of a resilient rubber material, such as a spongy foam rubber, and is textured to include segmented ribs to simulate a hand grenade shell. A flexible strap with a releasable fastening mechanism attaches between a distal end of the arm member and the user's wrist to effectively anchor the arm member to the user. While grasping the main body, the user turns his/her hand forwards and backwards in a rotating motion against the resistance of the drag assembly.

Abstract: A wrist exercise device comprising a supporting element including a first portion having an axis, said supporting element configured to be attached to a weight lifting machine; a handle having an axis, the handle coaxial with the first portion of the supporting element, the handle being configured for rotation about the first portion of the supporting element; and at least one resistive element, coupled to at least one of the supporting element and the handle, the resistive element configured to provide an element of resistance to rotation of the handle.