Abstract: A foot stepper exercise machine is composed of a base (10), two platform elements (20R, 20L) pivotally secured on the base (10), and two resilient elements (30) sandwiched between the base (10) and the corresponding platform elements respectively. The resilient elements (30) provide recoiling force for the platform elements (20R, 20L) and substitute mechanically hydraulic presses so that the structure of the foot stepper is simplified and a user is enabled to selectively operate the foot stepper in different ways while sitting.

Abstract: An exercise footboard structure includes a base, a lower support seat, an upper support seat, and a plank. The lower support seat is adjustably mounted on a cylindrical pillar of the base. The upper support seat is mounted on the lower support seat in conjunction with a plurality of elastic pieces which are fastened between the lower support seat and the upper support seat. The plank is mounted on the upper support seat such that the plank can be caused by an external force to tilt or swivel back and forth.

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: A tiltable twisting exerciser includes a base and a cover. The base has a top surface and a bottom surface. There are several fixing recesses disposed on the top surface. A rotatable disk is pivotally disposed the bottom surface. This cover is hinged on a first hinge portion of the base. This cover has an outer surface and an inner surface. A supporting portion is hinged on a second hinge portion which is fixed on the inner surface such that it can rotate out to a desired position. So, the user can do the twisting exercise on a sloped surface. The sloped surface is adjustable. And, it can be easily switch to one of the four operation modes.

Abstract: An exerciser includes an exercise module defined by hinged first and second plates with a spring therebetween to provide biasing resistance, and a bracket member for attaching the exercise module to a surface such as a bed. The exerciser provides a simple means for exercising, especially for users in a supine position.

Abstract: The present invention relates to a sport apparatus intended for training, wherein said apparatus comprises a base plate (1) preferably in the shape of a disc as well as rocking skids (4) provided on one side of the base plate. A standing plate (100) is mounted so as to be capable of rotation to the base plate (1) so that a rotation movement can be superimposed to the rocking movement thanks to said standing plate (100).

Abstract: A leg column extends between a user's legs, and a connected foot column extends front to back between the user's feet. Front and rear foot rods beneath the foot column bear against the soles of a user's feet. Cushioned front, rear and upper weight rods are connected to the leg and foot columns to bear against the foot above the user's toes, the user's feet above the heels and the lower legs at the shins, respectively. Barbell weights are removably connected to the weight rods. The relationships of the foot rods and weight rods are adjustable to suit a particular user. The leg barbell is completely free from connection to any fixed structure and, although secured to the user's legs and feet for a variety of exercises, is readily disengaged. The weight rods and foot rods may be connected with telescoping mounting members or perforated barstock to facilitate convenient adjustment.

Abstract: Footwear is employed for stretching an individual's calf muscles. The footwear includes a base member and a foot support member angularly disposed relative to the base member. The angle between the base member and the foot support member can be adjusted.

Abstract: A frame has a continuous upper surface with a pair of side-by-side elongate openings for receiving foot pedals. Each pedal is hingedly mounted to the frame near the heel. A motor is mounted on the frame for rotating a shaft. A cam is mounted on the shaft for supporting the pedal between the toe and the hinged frame mounting. The cams associated with the pedals extend in radially opposite directions from the shaft so as to produce counter-reciprocating motion in the pedals during shaft rotation. A resistance device, such as a spring, fluid cylinder, shaft brake or motor, provide resistance to downward movement of each pedal during manual operation. One or more switches or other control device is mounted relative to the frame or pedal that is manipulable by a user's foot or hand for controlling operation of the motor.

Abstract: Device for stimulating venous return in the lower limbs including a frame (1) intended to rest with a supporting surface against a foundation such as a floor, a bed head, a wall etc. The device is distinguished in that a foot plate (4) is arranged to tilt on frame (1) from an starting position that is angled in relation to the floor and thus frame (1) around an axle (5), that foot plate (4) is provided with a leaf spring (9) acting between a section (7) of the frame and the underside of foot plate (4), that the section (7) has such a form that when foot plate (4) pivots from the said starting position, leaf spring (9), by being progressively tensioned by the interaction of the frame with the section of the spring, increases the resistance against the pivoting of foot plate.

Abstract: An apparatus for improving jumping skill including an adjustable height platform and a pad with a clock enabling an athlete to stand on the platform and jump onto the timing pad then immediately jump off the board. The contact time of the athlete on the board is recorded by the timing device.

Abstract: A “soleus pump” (foot pump) applies an oscillatory movement to the sole of the foot so as to exercise the calf muscle and thereby prevent development of deep venous thrombosis. In one embodiment, the apparatus is placed under the lower leg of the patient, holding the leg in an optimal position without the necessity of strapping the apparatus to the patient or to the bed or table. The foot motion is applied through a foot pedal incorporating a safety feature which keeps the apparatus from jamming the patient's foot. In another operating mode, the motor drive may be withdrawn, so that the patient may drive the plate by voluntarily flexing the leg muscles, as a form of exercise. In another embodiment, two monopedal embodiments may be joined together to create a bipedal version of the invention, permitting both legs to be exercised at the same time. In yet another embodiment, the apparatus may be adapted for use by a patient sitting upright, for example, in a chair or airline seat.

Abstract: Exercise machine targeting the calf, ankle, and Achilles tendon having a foot tray exercising both feet simultaneously, and a padded frame fitting over the knees. Shock resistance cylinders or stretch bands are attached between the tray and the frame for resistance to foot movement downward during ankle rotation. A two-tray adaptation for exercising each leg individually is also included, which may feature a heel and adjustable toe for different foot lengths.

Abstract: An anti-throbotic foot exerciser (10) having a left housing (12L) which has a left housing foot pedal (12LA) movably connected to a left housing foot pedal support (12LC) by a left housing foot pedal hinge (12LE) which is movably connected to a left side of a housing center member (12C) by a housing center member left hinge (12CL). The left housing foot pedal hinge (12LE) has a right biasing means therein which functions to raise the left housing foot pedal (12LA) away from the left housing foot pedal support (12LC). A right housing (12R) which comprises a right housing foot pedal (12RA) movably connected to a right housing foot pedal support (12RC) by a right housing foot pedal hinge (12RE) which is movably connected to a right side of a housing center member (12C) by a housing center member right hinge (12CL). The right housing foot pedal hinge (12RE) comprises a right biasing means therein which functions to raise the right housing foot pedal (12RA) away from the right housing foot pedal support (12RC).

Abstract: The present invention relates to a body weight driven treadmill, and when the exerciser steps on the treadmill, the exerciser's body weight acts as a loading to tilt the pedal platform upward from the rear back of the treadmill, since the base of the treadmill has a front supporting rod and a rear supporting rod, wherein the radius of the front supporting rod is slightly smaller than that of the rear supporting rod, and the points of contact tangential to the ground are different. Such arrangement can slightly tilt the exerciser's body forward, until it reaches equilibrium and a stable position. When the treadmill is stepped by our legs alternately, the pressing foot will tilt forward, and twist the exerciser's waist. Such body weight driven treadmill is a simple and easy-to-assemble structure and does not occupy much space.

Abstract: A rotatable pedestal for allowing single riders such as a child to use their body weight to cause a rotatable disc seat to rotate over a sloped surface on a support stand. Springs within the stand cause the seat to rotate in an erratic and jumpy manner while the seat goes from a horizontal position to tilted positions of up to approximately 20 degrees and back to a horizontal positions. The pedestal is small enough and light enough to be portable and strong enough for most children up to the age of approximately 12 years old.

Abstract: A multipurpose exercising apparatus. The apparatus includes a mattress unit formed of a back mattress and a seat mattress, a rack, and a damping unit, wherein the relative angle between the back mattress and the seat mattress being adjustable. The position of the mattress unit is adjustable relative to the rack. The damping unit includes at least one actuating bar, one linking mechanism and one damping force source. By changing the position and/or direction of the mattress, the angle between the back mattress and the seat mattress, and/or the position of the actuating bar, the user can operate the exercising apparatus to exercise different parts of the body in different exercising positions.

Abstract: An ankle and hip exercising apparatus for exercising the ankle and hip using dorsi ankle flexion, plantar ankle flexion, ankle rotation, and hip rotation. The user may use unidirectional resistance for strength and range of motion development, or bidirectional resistance to develop proprioception. The foot is held in place by an overshoe having a sole with divots, mating with a shaft having a rounded top. Resistance is provided by elastomeric resistance members such as surgical tubing. The ankle exerciser's base board includes angle measurement indicia to provide feedback for range of motion improvement. A unique combination disc and hemispherical ball support is used to distribute weight which produces stress about the ankle in various areas of the foot. The device may be used while sitting or standing, depending on the type of exercise desired.

Abstract: An ankle rehabilitation device includes a foot platform movably disposed on a support arm coupled to and extending upwardly from a base. The foot platform is configured to pivot along a restricted pivot path configured to limit the user's ankle movement to plantar flexion, inversion and internal rotation in one direction along the restricted pivot path, and dorsi flexion, eversion and external rotation in an opposite direction along the restricted pivot path. A ball and socket type joint is coupled between the foot platform and the support arm, and has an aperture sized and shaped to limit movement of a coupling arm, and thus to limit movement of the foot platform. The device also includes resistance means, such as piston/cylinders, coupled to and between the base and the foot platform, for resisting movement of the foot platform with respect to the base. The piston/cylinder may be oriented transverse to all pivot axes of the foot platform to resist all movement of the foot platform.

Abstract: The present invention discloses a fitness device which includes a seat, a telescoping means which is attached to the seat at a terminal portion thereof by a pivot means and a support means which is attached to a second terminal portion of the telescoping means. The fitness device is adapted to support the hands and feet of a user who desires to stretch, strengthen and condition various muscle groups in the user's body.

Abstract: An ankle exercise device having a lower leg section receiving a calf portion of a lower leg of a user and a foot section receiving a foot of the user. The lower leg section is rotatably connected near the heel end of the foot section. A rigid control rod has one end connectable to the foot section and an opposite end held by the user. Thus, as the user successively pushes and pulls the control rod, the foot section is pivoted with respect to the lower leg section, thereby exercising the ankle-foot complex.

Abstract: A foot massaging exercising apparatus includes a base, a pair of upright rocker bars, a pair of foot pedals, and massaging boards. The base has securing seats at a front end thereof and bearing frames at a rear end thereof. The rocker bars are pivotally mounted at the securing seats such that the user may swing them forwardly or rearwardly. The foot pedals are mounted at the bearing frames and are capable of free swinging movement. Two massaging boards, one inclining forwardly, the other inclining rearwardly, are pivotally mounted in the bearing frames below each foot pedal. One side of each foot pedal extends downwardly to form a flange. The flange is connected via a link to the lower portion of the corresponding rocker bar. When the user swings the rocker bars, due to the arrangement of the links, the foot pedals may be caused to swing forwardly and rearwardly therewith in turn.

Abstract: A footcradle exercise apparatus and footrest having a base structure, a support assembly mounted for rotational movement with respect to the base structure, at least two support rollers mounted for rotational movement with respect to the support assembly, and a support member mounted with respect to said base structure. The two rollers are capable of supporting a base of a foot while the support member supports an Achilles tendon portion of a leg.

Abstract: A portable exerciser has a generally planar base for receiving a user's foot to be exercised and at least one resilient fastening member for flexibly fastening the user's foot to the base. The attachment member comprises a bar for attaching the resilient fastening member to at least one location on the base. When the resilient fastening member is attached to the base, it provides resistive force in opposition to movement of the user's foot and permits all of dorsiflexion, inversion and eversion exercise. The exercise apparatus can also include a force-bearing portion of the base so that a user can steady the base against movement with a non-exercising foot.

Abstract: The invention as shown in FIG. 5 is an exercising device to enable a person to exercise his or her feet while seated. More particularly, the exercising device enables a person to simulate a walking action while seated. The exercising device has a base 1 a pivot beam 5, and two footrests 8. Rear parts of the footrests 8 can pivot with respect to the base 1 by way of ball and socket fittings, and forward parts of the footrests 8 can pivot with respect to the pivot beam 5 by way of additional ball and socket fittings. The pivot beam 5 can pivot with respect to the base 1 by way of a further ball and socket fitting. When the exercising device is in use the person can place his or her feet on the footrests and tilt both the feet and footrests from side to side. The person can also cause forward parts of the footrests 8 to move up and down alternately by way of the pivot beam 5 by alternately pushing his or her feet down against the footrests.

Abstract: A device for vacuuming, which is powered by the leg exercise motion of a user, includes a pair of bellows units which are mounted on the user's feet and a tank which is mounted on the user's back. A hand-held cleaning wand is connected to the tank by a flexible hose. The user alternately compresses and releases the bellows units, overcoming an internally mounted spring, and as the bellows unit returns to its original shape, a partial vacuum is formed therein. The bellows units are connected to the tank by flexible tubes and the partial vacuum draws air into the cleaning wand, thereby vacuuming dirt and debris into the tank.

Abstract: A therapeutic apparatus is provided including a base having a bottom plate and a plurality of top plates. A top surface of the bottom plate is equipped with a plurality of recessed channels formed therein. The plurality of top plates are mounted to the top surface of the bottom plate. A rotating foot mount is provided. A carriage assembly is mounted to a bottom end of a cylindrical post of the rotating foot mount. The housing of the carriage assembly is slidably situated within one of the recessed channels of the base. A spherical ball of the carriage assembly is rollable within the recessed channels. The cylindrical post of the rotating foot mount extends upwardly above the base. The rotating foot mount is slidable along the recessed channels of the base. A plurality of stopper assemblies are each situated at an intersection of the recessed channels. A shaft of each of the stopper assemblies is movable to a raised orientation for blocking the corresponding recessed channel.

Abstract: An exercise apparatus is provided including a frame and a pair of pedals pivotally coupled to the frame in a side-by-side relationship. A resistance mechanism is included for urging the pedals upwardly. Further, a fulcrum and rod combination is provided for ensuring that only one pedal is capable of being raised at a time.

Abstract: The invention provides a calf exerciser which safely duplicates the desirable aspects of stair-edge toe lifts. The present exerciser allows a user to transition from a fully contracted position (a "tip-toe" stance) to a fully extended position (much as if one's heels were dropped below the level of the stair on which one rests his or her forefoot to the extent allowed by the exerciser's flexibility). A pivoting forefoot plate pivots with the user's forefoot as he or she transitions between the extended and contracted limits of the toe lift cycles. This eliminates the presentation at any phase of the exercise cycle of a sharp edge (like a stair-edge) to the foot, as well as insures that the user's forefoot (or corresponding shoe portion) remains squarely and safely in contact with a stable surface, despite inherent rocking motion of the feet during each toe lift cycle.

Abstract: A multi-station exercise apparatus for use during a leg exercise routine during which the user lies in a supine position and bends his legs at the knees and waist between extended-leg and bent-leg conditions includes a frame and a bench and utilizes two pairs of movable stirrups arranged generally above the bench at opposite ends thereof. The stirrups are adapted to accept the feet of the user as the user lies upon the bench in the supine position and to move with the feet as the legs of the user are bent at the knees and waist between extended-leg and bent-leg conditions. The frame includes two sets of guide rods disposed at each of the opposite ends of the bench for guiding the movement of the two pairs of stirrups generally upwardly and downwardly along predetermined paths as the user selectively moves either the first or second pair of the stirrups with his feet as the feet are moved between the bent-leg and extended-leg conditions.

Abstract: An orthopedic device ankle exerciser for rehabilitating and exercising an injured ankle of a pair of feet where each foot has an arch, a heel, toes, and a mid portion and where one foot of the pair of feet has a healthy ankle. The orthopedic device ankle exerciser comprises a foot board, pivot means, and fastening means. The foot board has a central portion, a lower surface, an upper surface opposite the lower surface, a first end, and a second end opposite the first end. The pivot means pivotably and frictionally supports the foot board and the pivot means is fixably and centrally attached to the lower surface of the foot board at the central portion inorder to prevent horizontal translation of the foot board. The fastening means secures the pair of feet to the foot board in selectively fixed side-by-side relation and the fastening means is fixably attached to the upper surface of the foot board proximate the central portion.

Abstract: The leg and ankle exercise device has a foot member rotatable attached to a pair of attachment arms which extend from and are attached to a leg member. The leg member is attached to the back of the lower leg of an exercise user by leg straps. The user's foot rests on the foot member and is positioned and retained by a heel rest and a foot strap. A handle attached to the toe end of the foot rest is then pulled by the user to provide the force against which to rotate and exercise the ankle and the back of the leg including the tendons and muscles, i.e., hamstring muscles, achilles tendon and others, as well as the user's back.

Abstract: An exercise machine for exercising the muscles of the front of the lower leg. The exercise machine includes a frame that supports a seat and a pivot shaft such that a user seated on the seat can rest his heels on the pivot shaft. An exercise arm is fixedly attached to the pivot shaft such that pivoting of the exercise arm causes rotation of the pivot shaft. An exercise bar which is parallel to the pivot shaft is attached to the exercise arm, and is spaced from the pivot shaft such that the user can slide the tops of his feet under the exercise bar with his heels resting on the pivot shaft. A cable and pulley system connect the pivot shaft to a stack of weights to thereby provide resistance to the pivoting of the foot about the heels. A hand lever linked to the pivot shaft raises the arm to allow the user to more easily position the tops of the feet under the bar.

Abstract: A lever operated exercise apparatus in which a user operates while in a standing position. The apparatus includes a foot engagement assembly mounted on a frame structure and comprises two foot members coupled to the frame which move in a substantially vertical direction. A power translating mechanism comprising a lever operatively connects the frame structure and the foot engaging assembly such that a downward force by one foot member produces an upward force in the other foot member.

Abstract: A pedal structure mainly including a pair of bases each having a facing-inward long recess with toothed side walls, a pair of adjusting supports each including an upper shaft holder portion for receiving one end of a shaft and a lower coupling rod portion having toothed side walls for engaging with the long recess of the base, and a pair of pedals pivotally rotatably assembled to the shaft extending between the two shaft holder portions of the adjusting supports.

Abstract: An exercise and physical therapy device for a human anatomical part (e.g. a foot and ankle) includes a support. An adjustable, resilient torsion device, capable of both twisting and bending motion, has one end affixed to the support; an engagement member, for engagement with a human anatomical part, is mounted on the other end of the torsion device. In one embodiment the support is pivotally mounted on a base plate, and an elevating latch mechanism latches the support at one of several angular positions relative to the base plate. In another embodiment the support constitutes the base of the device and a plurality of bumpers mounted on the support limit angular deflection of the engagement member relative to the support.

Abstract: A leg stretching apparatus comprises an L-shaped, leg and foot support assembly for receiving the leg in straight and bent positions, and the foot in varying positions, including positions of inversion and eversion, to stretch the muscles of the lower leg. The extended portion of the foot support member is pivotally connected to the leg support member, and is adjustably connected by second-class levers to the leg support member to enable a debilitated person to easily exert sufficient force to stretch the various muscles of the lower leg by causing the foot support member to rotate the foot of a patient about the axis of the patient's ankle and to quickly release the exerted force which is exerted by the second-class lever.

Abstract: A side stepping exercise apparatus is provided which a user operates while in a standing position. The apparatus includes a foot engagement assembly mounted on a frame structure. The foot engagement assembly comprises two foot engaging members which are coupled to the frame structure to move in a substantially vertical direction. Two force transmitting components operatively connect the frame structure and the foot engagement assembly. One force transmitting components operatively connects the front of the frame structure and the front of the foot engaging members. A second force transmitting component operatively connects the rear of the frame structure with the rear of the foot engaging members. The two connections are such that a downward force applied to one portion of the foot engaging members produces an upward force on the corresponding portion of the other foot engaging member. This causes the foot engaging members to move in opposite direction from one another.

Abstract: An exercise and physical therapy device for a human anatomical part (e.g. a foot and ankle) has a base plate; a support plate is pivotally mounted on the base plate. An elevating latch mechanism latches the support member at one of several angular positions relative to the base plate. An adjustable, resilient torsion device, capable of both twisting and bending motion, has one end affixed to the support member; a connection member, for connection to the human anatomical part, is mounted on the other end of the torsion device.

Abstract: A stepping exercise apparatus having two foot engaging members coupled to a structural frame to move in a substantially vertical direction. A power translating mechanism operatively connects the foot engaging members for moving them in opposite directions. The power translating mechanism includes at least one lever pivotally mounted at its proximate center and having adjustable end segments pivotally connected to the foot engaging members.

Abstract: A lever operated exercise apparatus is provided which a user operates while in a standing position. The apparatus includes a foot engagement assembly mounted on a frame structure. The foot engagement assembly comprises two foot engaging members which are coupled to the frame structure to move in a substantially vertical direction. A power translating mechanism comprising a lever operatively connects the frame structure and the foot engagement assembly such that a downward force applied to one of the foot engaging members produces an upward force on the other foot engaging member. This causes the foot engaging members to move in opposite direction from one another. The power translating mechanism may have two levers rigidly mounted together and connected to the foot engaging member at two different locations. This double lever keeps the foot engaging members in a substantially horizontal position while they move in a substantially vertical direction.

Abstract: An adjustable rotating resistance exerciser wherein an adjustment knob functions to supply an axial force to a series of interleaved washers and compressible washers to adjust the rotational restriction of a tubular grip handle, which is disposed on an inner collar that is affixed to a tubular handlebar. The exerciser may be configured such that it is adaptable to a riding bicycle or a stationary exercise bicycle or the exerciser may be affixed to various size robes or bars such that it may be used in any convenient location. A further embodiment of the present invention may be utilized by incorporating the adjustable rotating resistance exerciser with a tabletop unit which can be used by individuals confined to wheelchairs, hospital beds or nursing homes. Furthermore, the tabletop unit may be modified to accept foot plates so that individuals may use the rotational exerciser to exercise ankle and calf muscles.

Abstract: An exercise apparatus especially suitable for simulating mogul skiing conditions. The apparatus may comprise a base which supports a rotatable component which, in turn, supports a platform for supporting a user. The rotational component includes a unidirectional element limiting the direction of rotation of the rotational component to a single direction. A biasing assembly assists and resists the movement of the rotational component and varies the speed of the rotational component in response to a displacement of the rotational component. An alternative exercise apparatus includes a pair of spaced rotational components driven by a prime mover via a power transmitting element. A platform is operatively connected to the pair of rotational components via a platform support assembly. One rotational element leads the other rotational element so as to vary the angular disposition of the platform throughout the rotation of the rotational elements. The prime mover is preferably a variable speed motor.

Abstract: A hydraulic exerciser includes an elongated hollow support formed with an axial through bore, and a pair of hydraulic cylinders, each of which has a cylinder body and a plug unit which is secured on one end of the cylinder body and which mounts pivotably the cylinder body on a respective one of two ends of the hollow support. The plug unit is formed with a fluid passage for communicating the interior of the cylinder body and the through bore of the hollow support, and includes a first plug member extending sealingly and securely into the cylinder body and having an axial threaded extension which extends out of the cylinder body, and a second plug member having a head section formed with a radial threaded hole which engages threadedly the threaded extension and a shank section extending sealingly and rotatably into the respective one of the two ends of the hollow support.

Abstract: A recumbent bilateral reciprocal isokinetic leg exerciser wherein first and second reciprocating members are slidingly coupled to a linear track so that they move with linear bilateral reciprocal motion. Both reciprocating members are coupled to associated hydraulic cylinders so that hydraulic fluid is drawn into or forced out of the hydraulic cylinders as the reciprocating members move along the track. A valve assembly is coupled to the hydraulic cylinders for controlling fluid flow into and out of the hydraulic cylinders so that the reciprocating members move isokinetically. The valve assembly may be set for simultaneous movement of the first and second reciprocating members or for movement of one reciprocating member by itself. To ensure accurate measurement of patient effort, a strain gauge assembly is disposed on each reciprocating member for detecting deformation of the reciprocating member along multiple axes.

Abstract: A calf workout device comprises a base formed in a generally planar rectangular configuration with a toe side edge, a heel side edge, and parallel long side edges. The base includes two planar side faces which extend vertically upward from the long side edges. Each side face includes a coupling device at its approximate center point. A foot plate is shaped in a generally rectangular configuration with a toe edge, a heel edge, and parallel long side edges. The toe edge is linear and the heel edge is formed in a semi-circular configuration. The heel edge includes an upwardly extending cylindrical wall. The approximate center point of the long edges of the plate include an aperture which extends from side to side. A cylindrical axle is positioned through the foot plate with its ends coupled to the side faces. The foot plate includes a resilient device for urging the plate in one direction.

Abstract: A starting block 60 includes a foot-support means 12 and a heel-support portion 14. The heel-support portion 14 extends from the foot-support means 12, for supporting a user's heel, and is adjustably arranged relative to the foot-support means 12.

Abstract: A recumbent bilateral reciprocal isokinetic leg exerciser wherein first and second reciprocating members are slidingly coupled to a linear track so that they move with linear bilateral reciprocal motion. Both reciprocating members are coupled to associated hydraulic cylinders so that hydraulic fluid is drawn into or forced out of the hydraulic cylinders as the reciprocating members move along the track. A valve assembly is coupled to the hydraulic cylinders for controlling fluid flow into and out of the hydraulic cylinders so that the reciprocating members move isokinetically. The valve assembly may be set for simultaneous movement of the first and second reciprocating members or for movement of one reciprocating member by itself. To ensure accurate measurement of patient effort, a strain gauge assembly is disposed on each reciprocating member for detecting deformation of the reciprocating member along multiple axes.

Abstract: An exercise apparatus for simulating a stepping motion, wherein the horizontal components of the stepping motion may be either parallel, or opposed. The apparatus includes a first and second stepper mechanism connected by a central pivot. Each stepper mechanism includes a mechanism for yieldably resisting downward motion of a foot platform. The central pivot allows the stepper mechanisms may be aligned in a parallel orientation, wherein the horizontal component of motion of each foot platform is parallel. Alternatively, the central pivot permits orientation of the stepper mechanisms in an opposed or end-to-end relation, wherein the horizontal component of motion of each foot platform is colinear and opposed.

Abstract: This invention relates to an exercise stair device and in particular to one mainly including a base having a cavity at the bottom and a raised portion with two recesses, two inflatable balls each disposed in a corresponding one of the recesses and being communicated with each other via a U-shaped tube, a cover engaged with the cavity of the base, and two pedals pivotally mounted on the base and each having spherical protuberance at the bottom adapted to be received in the corresponding one of the recesses of the base, whereby when one of the pedals is pressed downward on the corresponding inflatable ball, the inflatable ball will be squeezed by the pedal thereby forcing the air in the inflatable ball to go into the other inflatable ball and therefore lifting the other one of the pedals.