Abstract: An amusement device that includes an elastic ball, a rigid, generally rectangular platform surrounding the ball so as to give the ball a figure eight appearance, an elongated elastic handle extending upwardly from the center of the ball, and a plurality of straps releasably securing the handle to the platform. The handle includes an upper section, a lower section, and a bar extending generally horizontally outwardly from the upper section of the handle. The bar may be grasped by a person while bouncing on the ball. The handle and the ball are made from an elastic material such as rubber.

Abstract: Apparatus attaches to the leg at or below the knee to take the shock of walking off the foot and ankle. The foot is encased in a boot. Two spaced-apart tubes extend upward from a subfloor mounted below the boot. The boot is mounted for sliding up and down on the tubes. A pair of parallel elongate rods are attached at their upper ends to the upper portion of the leg at or below the knee, such that the lower ends of the rods are in the tubes. A spring, preferably a gas compression spring, is inserted into each tube so that the lower end of each rod compresses the spring as body weight is put on the subfloor in walking. The subfloor moves toward the boot as the springs are compressed, reducing some of the shock of walking and transferring forces to the leg. The rods may be attached to the leg by a cast, brace or orthosis.

Abstract: Disclosed herein is an exercise step and an air-cushioning leg for the exercise step. The exercise step (1) includes a plate-shaped panel (10), and air-cushioning legs (30). Each of the air-cushioning legs is provided under the panel to support the panel, and absorbs a load applied to the panel by air cushioning effect. The exercise step has a high air cushioning effect, thus protecting a user's knees from injury, allowing the user to exercise in comfort and safety, and minimizing noise generated during a cushioning operation. Further, the exercise step prevents the panel from being deformed due to a load applied to the panel.

Abstract: A pneumatic pogo stick is comprised of an elongate cylindrical housing which forms a cylinder. The housing is formed from a clear polycarbonate plastic. A top cap is attached to one end of the housing to form the top of an air chamber. A plastic piston, slidable within the cylinder, forms the bottom of the air chamber. An elongate shaft is coupled to the bottom of the piston and is moveable therewith, extending from the distal end of said housing as the piston moves within the cylinder. A bottom bracket assembly is attached to the bottom of the housing and a bushing for maintaining the lateral position of the shaft relative to the housing is attached to the bottom bracket assembly. The bushing prevents the shaft from rotating relative to the housing. User foot supports are also attached to the bottom bracket for supporting the feet of the user and handle bars are attached to the top cap for grasping with the hands of a user.

Abstract: A base releasably coupleable to a pogo stick tip for added stability and prolonged enjoyment of the pogo stick.

Abstract: A jumping stick has a handle bar and a cylindrical outer shaft. The outer shaft has a bore, an upper end coupled to the handle bar, and a lower end with an opening provided at the lower end that extends into the bore. The jumping stick further includes an inner shaft having an upper end that extends into the bore of the outer shaft, a spring element operatively coupled to the inner shaft, and a landing base coupled to the lower end of the inner shaft.

Abstract: An exercise platform for low-impact exercises that is of a resilient shell that can contain components, such as liquids, foams, pellets, solids, and gases, but more typically air. This filled shell gives the desired resistance and passivity to the exercise platform and provides a surface that produces low to almost no impact when, jogging, bouncing, etcetera. The platform can have a rigid base or frame with removable or collapsible legs, and/or casters used for height adjustment and mobility. Slots, hooks, or other means can join multiple platforms to form a larger surface for reclined exercises. The platform and/or its frame also has one or more inlets for rigid vertical members that terminate as handle bars or an overhead bar(s) for auxiliary upper body exercise equipment. A decorative cover transforms the exercise platform into furniture when not in use.

Abstract: An exercise balance trainer includes a hard board and a resilient ball body connected to the board. The ball body has a first curved wall with a first rim, a second curved wall with a second rim connected fixedly to the first rim so as to define an air-receiving chamber between the first and second curved walls, and an annular flange connected to the board and a junction of the first and second rims. The first and second rims have the same diameter. The first curved wall has a maximum height that is not greater than one-half of the diameter of the first rim. The second curved wall has a maximum height that is not greater than one-third of the diameter of the second rim.

Abstract: Disclosed is a jumping device for exercise including an arc-shaped plate spring, a vertical member coupled to the plate spring, a footrest coupled to the vertical member while extending horizontally, a hinge lever hingably coupled to the footrest, a hoof lever hingably coupled to the hinge lever and fixedly mounted to the plate spring in an overlapping state, a shoe case serving as a shoe to be worn by a user, the shoe case being integrally coupled to the footrest while including a shoe bottom plate, and a U-shaped strip member serving as a connecting rod for connecting the footrest to the vertical member, the strip member having leg portions each fixedly mounted at a lower end thereof to an intermediate portion of the shoe bottom plate while extending upwardly and inclinedly toward an upper end thereof, and a connecting portion for connecting the leg portions, and a fitting member fixedly mounted to the connecting portion of the strip member at the rear of the strip member, the fitting member being fitted ar

Abstract: An exercise ball device has an elastic cable, two end hooks disposed on two ends of the elastic cable, a ball having a retainer ring to receive one of the end hooks, a treadle having a hole, and a soft cushion having a retainer ring to receive the other one of the end hooks, which penetrated a hole on a treadle.

Abstract: A spring board construction in one embodiment with a board member, first and second bindings, and first and second spring units coupled to the board member. The spring units can have resiliently deflectable upper and lower arcuate spring members joined in an opposing relationship. The spring units can be disposed generally parallel to one another and perpendicular to a longitudinal dimension of the board member. The first and second ends of the upper and lower arcuate spring members can be fixed together by being mutually enveloped in first and second encasements. The spring members can be crafted from a composite of plastic and fiberglass. Traction members can be fixed to mid-portions of the lower spring members.

Abstract: A pogo stick comprising a handlebar, a grip portion, and a footrest that is collapsible into a small volume for easy transportation and compact storage. The handlebar is provided with at least one elongate telescoping member, the grip portion is provided with removable grips, and the footrest is provided with pivotally mounted plates. The collapsible pogo stick incorporates a pneumatic spring of variable stiffness for accommodating users of different body weights. The pneumatic spring includes a pressure cylinder and a shaft extending out of the cylinder for engagement with the ground. The pneumatic spring includes a self-charging mechanism such that the cylinder may be charged without the use of an external pump.

Abstract: A method and apparatus for allowing a user to repetitively bounce into the air, includes a first and second support, each having a first and second end. A base being coupled to the first and second supports at the second ends. At least one compression resistance system being coupled with the base. The compression resistance system is configured to provide an uncompression force. First and second handles being coupled with the first ends of the first and second supports, respectively. When in use a user stands on the base between the first and second support and provides a first force on the apparatus. The user releases the first force and receives a second force. The user then stops exerting the second force and repeats the steps of providing the first force, releasing the first force and receiving the uncompression force.

Abstract: A ball positioning structure on which a ball is placed comprises a lower body including a round disk with a through-hole in the center thereof, an upper body covered on the lower body and having a bore provided in the center thereof which is in alignment with the through-hole; a bearing disposed in the bore of the upper body such that the upper body and the slide device are mutually rotatable, and a frame, on which a ball is placed, disposed on the surface of the upper body. A user may sit on the ball, press the ball, or lean on the ball and make fixed-point rotation to enhance enjoyment of playing.

Abstract: A device (1) for performing jumps by successive leaps, includes a tubular body (2) which is provided at one of its ends, referred to as the “lower” end, with footrest struts (3, 4); a handlebar (8) equipped with grips (81, 82) which is integral with the other end, referred to as the “upper” end, of the body; an impact shaft (5) is adapted to slide inside the body (2) and at least part of which is capable of being deployed in the extension of the lower end of the body; and elements (14) for returning the shaft (5) elastically to an extreme deployed position. The device includes elements (9) for braking the impact shaft (5) in relation to the body (2) and elements (83, 84), which are disposed on the handlebar (8), for manually controlling the braking elements(9).

Abstract: A scalable high-performance bouncing apparatus provides convenient access to an internally mounted compound tension spring. Semi-mounted internal storage of disengaged tension elements may be provided. The tension elements may be engaged or disengaged through an access feature such as a slot in the apparatus frame. A user's finger or tool may be employed to effect engagement/disengagement. Alternatively, the apparatus may include mechanical components capable of effecting engagement/disengagement. The tension elements may also be part of a cartridge unit that can be wholly removed from the apparatus for engagement/disengagement. The assembly may also include a torque-transmitting bearing and/or a universal foot joint for improved high performance operation.

Abstract: An exerciser has a base, a rocking frame and a back pad. The rocking frame is pivotally attached to the top of the base and adapted for a user rocking the rocking frame relative to the base. The back pad is mounted on the rocking frame and adapted for the user to lay on the back pad. With such an exerciser, the user not only can train the abdominal muscles of user, but also can swing, twist or expand his or her body.

Abstract: An exerciser has a base and a rocking plate. The rocking plate is rotatably attached to the base with a ball joint. Consequently, a user can swing or twist body, rotate ankles and develop feet muscles when the user steps on the rocking plate to keep balance. The exerciser can exercise the lower part of the body of a user. This exerciser is more versatile than the prior art.

Abstract: An integrated exercise machine system that is utilized to facilitate overall physical fitness which includes the detoxification of the body along with the aerobic conditioning of the cardiovascular system. The system was primarily designed to facilitate a proactive approach to the conditioning of muscles that have become fatigued or atrophied in various occupations, such as computer operators, clerical personnel, or other occupations that have limited range of motions, and improve mobility of the elderly and physically impaired. It is a uniquely shaped, portable rebounder that folds with a safety hinge and collapsing legs. An overhead upper body exercise system is adapted to the environment utilizing a dual telescopic primary horizontal overhead bar, adapts to a door frame or wall, and is housed in a cradle unit. There are two adjustable securing straps with a device for attaching and suspending the secondary horizontal bar and/or elastic resistance ropes with varying degrees of elasticity.

Abstract: A bouncing rod with an adjustable pneumatic pressure includes a bouncing device and a pressurizing device below the bouncing device. The air pressure of the bouncing device can be set by an adjusting valve and kept to a constant value by supplying air into the bouncing device through each bounce.

Abstract: A more stable pogo stick device, which may or may not be steerable, employs multiple spring legs, at least one of which can have an alterable spring rate. To steer in a direction, the alterable spring rate is employed, whereupon the pogo will move in the direction of the softer spring. Further, a pogo stick with enhanced stability and safety is provided by employing multiple, vertical springing legs. A pogo with enhanced stability and widened foot platform provides the ability for a single rider to perform tricks and/or to allow multiple riders to jump together at the same time.

Abstract: Disclosed is a jumping device for exercise including an arc-shaped plate spring, a vertical member coupled to the plate spring, a footrest coupled to the vertical member while extending horizontally, a hinge lever hingably coupled to the footrest, a hoof lever hingably coupled to the hinge lever and fixedly mounted to the plate spring in an overlapping state, a shoe case serving as a shoe to be worn by a user, the shoe case being integrally coupled to the footrest while including a shoe bottom plate, and a U-shaped strip member serving as a connecting rod for connecting the footrest to the vertical member, the strip member having leg portions each fixedly mounted at a lower end thereof to an intermediate portion of the shoe bottom plate while extending upwardly and inclinedly toward an upper end thereof, and a connecting portion for connecting the leg portions, and a fitting member fixedly mounted to the connecting portion of the strip member at the rear of the strip member, the fitting member being fitted ar

Abstract: A pogo stick or jump leg is used for amusement and exercise and is formed of a cylindrical body, a handle frame, a footboard, a landing rod, and a counting mechanism which is disposed in the handle frame and is formed of a counter, a drive member, and a linking member. The linking member is actuated by the landing rod in motion to activate the drive member so as to drive the counter for keeping count of jumps made by the landing rod.

Abstract: A jumping stick has a handle bar and a cylindrical outer shaft. The outer shaft has a bore, an upper end coupled to the handle bar, and a lower end with an opening provided at the lower end that extends into the bore. The jumping stick further includes an inner shaft having an upper end that extends into the bore of the outer shaft, a spring element operatively coupled to the inner shaft, and a landing base coupled to the lower end of the inner shaft.

Abstract: A pneumatic pogo stick is comprised of an elongate cylindrical housing which forms a cylinder. The housing is formed from a clear polycarbonate plastic. A top cap is attached to one end of the housing to form the top of an air chamber. A plastic piston, slidable within the cylinder, forms the bottom of the air chamber. An elongate shaft is coupled to the bottom of the piston and is moveable therewith, extending from the distal end of said housing as the piston moves within the cylinder. A bottom bracket assembly is attached to the bottom of the housing and a bushing for maintaining the lateral position of the shaft relative to the housing is attached to the bottom bracket assembly. The bushing prevents the shaft from rotating relative to the housing. User foot supports are also attached to the bottom bracket for supporting the feet of the user and handle bars are attached to the top cap for grasping with the hands of a user.

Abstract: There is disclosed herein a recreational device that duplicates the riding position of a MOT motorcycle on a bouncing assembly similar to that of a Pogo Stick™. In one embodiment, the device includes handlebars and footrests mounted on a bouncing assembly. The handlebars are mounted forward of the bouncing assembly's central axis, and the footrests are mounted rearward of the central axis. The bouncing assembly may be of any conventional type such as a spring or gas-charged cylinder, though other types are also contemplated. Also disclosed herein is a ground-engagement pad that provides a bottom surface with a large cross-sectional area to enable use of this or other bouncing devices on soft surfaces such as grass and dirt.

Abstract: A scalable high-performance bouncing apparatus includes a carriage assembly that can support a person; a foot alternately retracting toward and extending away from the carriage assembly; and a thrust assembly having a tension force and effecting the retraction and extension using a plurality of engageable and disengagable elastomer tension elements that supply the tension force. A shield member integral with the carriage assembly protects the rider from accidental contact with moving parts of the thrust assembly, and an access feature enables engagement and disengagement of the tension elements for adjustment of the tension force. Piston pogo, scissor-lift pogo and scissor-lift bounceboard embodiments are disclosed.

Abstract: A locomotion device, such as a pogo stick, having a housing having a first end portion and a second end portion, a plunger being slideably connected to the housing second end portion, the leaf spring also pivotally attached to the plunger. A method for locomoting using such a device is also disclosed.

Abstract: A balancing exercise device for an individual, having a flexible hemisphere having a flat circular surface and a hemispherical side surface and being made out of flexible resilient material which will compress when placed under pressure and pair of attachment straps respectively affixed on oppositely disposed sides of the hemispherical side surface and which are connected by connecting members respectively located on each attachment strap so that a body part is held against said flat circular surface when the attachment straps are connected.

Abstract: A base releasably coupleable to a pogo stick tip for added stability and prolonged enjoyment of the pogo stick.

Abstract: An inflatable or inflated ball comprising an outer chamber formed of an airtight flexible outer skin which, when properly inflated and fully expanded, defines an interior volume. A sealed inner chamber filled or fillable with a substance substantially heavier than air is positioned within and occupies a relatively small amount of the interior volume. A plurality of elongated radially extending and three-dimensionally spaced elastic members are each connected and radially extend between, the inner chamber and the inner surface of the outer chamber. The elastic members are cooperatively sized in length and suitably tensioned to support and hold the inner chamber centrally in an at-rest position within the interior volume.

Abstract: The present invention relates to a pogo stick structure, more particularly, a pogo stick comprising a foot-pad housing with handlebars thereof and a support rod; wherein, a foot-pad housing rises at the position of the foot pads and forms a hollow tube creating space for placing a compression spring therein; the installation of the tube helps to stabilize the compression spring while making constrained and released movements, and also reduces great height of the foot pads to the ground which can decrease user's fear in operating the pogo stick; moreover, the external flange of the foot pads is mounted with a plurality of LED flash lights, and under the foot pads installs a controller which switches on/off the LED flash lights and creates sound.

Abstract: A method and apparatus for allowing a user to repetitively bounce into the air, includes a first and second support, each having a first and second end. A base being coupled to the first and second supports at the second ends. At least one compression resistance system being coupled with the base. The compression resistance system is configured to provide an uncompression force. First and second handles being coupled with the first ends of the first and second supports, respectively. When in use a user stands on the base between the first and second support and provides a first force on the apparatus. The user releases the first force and receives a second force. The user then stops exerting the second force and repeats the steps of providing the first force, releasing the first force and receiving the uncompression force.

Abstract: A pogo stick has an upper tubular member with a hand graspable means on an upper end and a foot engageable means on a lower end, and a lower slider member with a top end and a bottom end, the top end being shaped to telescopically engage the lower end of the upper tubular member, and the bottom end having a removable bumper having a co-molded rubber portion. The lower slider member slides between a retracted position and an extended position, and the upper tubular member includes a spring assembly for biasing the lower slider member towards the extended position. The pogo stick includes a spring assembly that includes springs of varying strengths which, in conjunction with a compression assembly that pre-compresses the spring assembly, enables the user to customize the desired spring characteristics. The hand graspable means includes a novel pair of laterally extending hand grips that can be attached to the upper tubular member with a clamping mechanism supported by an inner lip.

Abstract: A harness for an ABS therapeutic ball allows a user to perform aerobic exercises while seated on the ABS therapeutic ball. The harness includes a stabilizer portion having circumferential straps extending therefrom. A handle is positioned between the circumferential straps proximate a joining area thereof. An adjustment strap having a self fastening system also extends from the stabilizer portion of the harness and interacts with the joining area of the circumferential straps to provide a single, overall size adjustment of the harness to accommodate various sizes of ABS therapeutic balls. Once installed onto an ABS therapeutic ball, the user may perform various aerobic exercises while seated on the ABS therapeutic ball and firmly grasping the handle of the harness. The harness thus provides a secure, no-slip, and stable platform for aerobically exercising on the ABS therapeutic ball.

Abstract: A pogo stick comprising a handlebar, a grip portion, and a footrest that is collapsible into a small volume for easy transportation and compact storage. The handlebar is provided with at least one elongate telescoping member, the grip portion is provided with removable grips, and the footrest is provided with pivotally mounted plates. The collapsible pogo stick incorporates a pneumatic spring of variable stiffness for accommodating users of different body weights. The pneumatic spring includes a pressure cylinder and a shaft extending out of the cylinder for engagement with the ground. The pneumatic spring includes a self-charging mechanism such that the cylinder may be charged without the use of an external pump.

Abstract: A pogo stick has an upper tubular member with a hand graspable means on an upper end and a foot engageable means on a lower end, and a lower slider member with a top end and a bottom end, the top end being shaped to telescopically engage the lower end of the upper tubular member, and the bottom end having a removable bumper having a co-molded rubber portion. The lower slider member slides between a retracted position and an extended position, and the upper tubular member includes a spring assembly for biasing the lower slider member towards the extended position. The pogo stick includes a spring assembly that includes springs of varying strengths which, in conjunction with a compression assembly that pre-compresses the spring assembly, enables the user to customize the desired spring characteristics. The hand graspable means includes a novel pair of laterally extending hand grips that can be attached to the upper tubular member with a clamping mechanism supported by an inner lip.

Abstract: The present invention relates to a sporting and exercising device comprising an upper foot-receiving portion and a lower spring portion. The spring portion comprises an upper spring layer arched upwardly, a lower spring layer arched downwardly, an intermediate, generally flat and substantially elastic elongate member, a first connecting member for interconnecting first ends of the intermediate member, upper spring layer and lower spring layer, and a second connecting member for interconnecting second ends of the intermediate member, upper spring layer and lower spring layer. The intermediate member has two longitudinally spaced apart openings each having a peripheral contour and a needle extending across the opening from the peripheral contour thereof. Resilient shock absorbing bodies each have an annular groove for receiving the peripheral contour of one of the openings and a hole which opens in the annular groove for receiving the corresponding needle.

Abstract: A child activity device for entertaining and promoting activity in a child is disclosed. The child activity device is configurable between a use and storage position and may also include a frame providing bouncing motion for a child. The activity device includes a support frame extending vertically upwards from a lower end proximate to a support surface and terminating at an upper end, a supporting portion, and may further include a seat, coupled to the supporting portion, that is rotatable about a first axis relative to the support frame to allow a child placed in the seat to rotate about the first axis. A coupling assembly is also disclosed. The coupling assembly secures the supporting portion to the support frame upper end and permits rotation of the supporting portion about a second axis for configuring the seat and supporting portion in a storage position. An activity device with foldable support legs is also disclosed.

Abstract: A recreational air board used for “surf-bouncing” on a trampoline. The board is made of at least one soft cushioning layer and a support layer. The cushioning layer provides protection against damage caused to the trampoline and other objects by impact with the board. The cushioning layer also minimizes the risk of injury to the user. The support layer provides stiffness to the board so that the board maintains its proper form. The board may be fastened to a user's feet by a pair of elastic cords. The elastic cords form loops to receive a user's feet and are attached to the board through openings in the board. The elastic cords can stretch to snugly fit different sized feet without the need for special boots and bindings.

Abstract: An article of footwear having a support structure in the form of a boot (10) a primary lever (22) being pivotally mounted adjacent the heel of the boot (10), the primary lever (22) extending downwardly below the sole formation (17) of the boot (10) and being biased away therefrom, by resilient means (38), and a secondary lever (26) being pivotally mounted adjacent the lower end of the primary lever (22) and being biased away from the sole formation (17) of the boot (10) by resilient means (34), the secondary lever (26) being pivotal relative to the first lever (22) towards the sole formation (17) against the biasing force of the resilient means (34), so that upon downward movement of the boot (10) the resilient means will be resiliently deformed storing energy which will assist motion of the boot in the upward direction.

Abstract: An adjustable spring rate pogo stick that incorporates two springs, with different spring rates, in parallel. This two-spring system can produce three different spring rates by allowing the user to engage one spring (first setting), the other spring (second setting) or both springs simultaneously (third setting). This pogo stick will accommodate weights of below 80 pounds to above 250 pounds.

Abstract: An adjustable jumping apparatus having a hollow housing with handlebars for a rider to hold and reinforced foot pegs for a rider to stand upon. A pole extends downwardly from the housing, has a ground-engaging base, and slides in and out of the housing through a sleeve integral with the lower end of the housing. The device is propelled by at least one bungee cord attached at its upper end to a disc integral with the upper end of the pole and at its lower end to the interior surface of the lower end of the housing. The device is adapted for easy installation and removal of bungee cords for adjusting the amount of rebound force available to the user.

Abstract: A jumping device having a high rebound platform, a flexible tether operatively connected at a first end thereof to the high rebound platform, and a handle located on the tether. A method of jumping, including providing a jumping device having a high rebound platform, a flexible tether operatively connected at a first end thereof to the high rebound platform, and a handle on the tether, mounting the jumping device by placing a user's foot on the high rebound platform, grabbing the handle, pulling the handle away from the high rebound platform, and jumping so that the high rebound platform alternates between compressed and uncompressed states.

Abstract: A springy sports shoe includes a boot which is fastened in the sole to a springy body and an elastic body by a fastening body. The fastening body is formed of an upper body which is fastened to the sole the boot, and of a lower body which is fastened to the springy body. The elastic body is retained by the springy body.

Abstract: An adjustable jumping apparatus having a hollow housing with handlebars for a rider to hold and reinforced foot pegs for a rider to stand upon. A pole extends downwardly from the housing, has a ground-engaging base, and slides in and out of the housing through a sleeve integral with the lower end of the housing. The device is propelled by at least one bungee cord attached at its upper end to a disc integral with the upper end of the pole and at its lower end to the interior surface of the lower end of the housing. The device is adapted for easy installation and removal of bungee cords for adjusting the amount of rebound force available to the user.

Abstract: The present invention 10 discloses an exercise device wherein a user 12 exercises the abdominal muscles by throwing a ball 14 against a net system 20, 40, 42. The user 12 places his head 34 and back 32 on a pivotable platform 18 and his buttocks 30 and feet 56 on a stationary platfoin 22 which pivots about spring 36. The spring 36 provides lift assistance when the user 12 throws the ball 14 and shock dissipation when the user 12 catches the ball 14. Foot straps 28 are provided for securing the feet 26 of the user 12. The nets 20, 40, 42 are mounted on supports 48, 50 which are vertically adjustable using locking means 52. Nets 40, 42 also have pivot means 46 for folding for storage against central net 20.

Abstract: A pogo stick includes (a) a housing, (b) a member movable within the housing, (c) a spring retained at opposite ends by the housing and the member and compressible upon the actuation of the member to a support surface (e.g. ground) and expansible upon the movement of the member from the support surface, (d) a handle on the housing near the housing top and (e) a foot rest on the housing near the housing bottom. A switch normally in an open relationship is operative (a) to a closed relationship upon the actuation of the member to the support surface and (b) to an open relationship upon a movement of the member from the support surface. The switch includes a resilient electrically conductive element and a stationary electrically conductive element normally defining an open relationship. The resilient member is movable in response to the member actuation to the support surface to engage the stationary element and to provide a switch operation in the closed relationship.

Abstract: A jumping device having a high rebound platform, a flexible tether operatively connected at a first end thereof to the high rebound platform, and a handle located on the tether. A method of jumping, including providing a jumping device having a high rebound platform, a flexible tether operatively connected at a first end thereof to the high rebound platform, and a handle on the tether, mounting the jumping device by placing a user's foot on the high rebound platform, grabbing the handle, pulling the handle away from the high rebound platform, and jumping so that the high rebound platform alternates between compressed and uncompressed states.

Abstract: A treadmill (10) includes a frame on which are mounted transverse forward and rearward roller assemblies (14, 16). An endless belt (18) is trained about the forward and rearward roller assemblies. A deck (20) is positioned between the upper run of the belt and the frame. The rearward portion of the deck (20) is mounted to the frame by a pivot connection (24) to allow pivoting of the deck about an axis transversely to the length of the deck. Elongate springs (26) of adjustable stiffness are mounted either along the sides of the frame to underlie the side margins of the deck, or transversely of the deck, to support the deck in conjunction with the pivot connection (24) and to absorb impact loads imparted on the deck by the user.