Abstract: The invention concerns an apparatus (1) comprising a chassis (10) supported on the ground (S), a mobile platform (44) supporting a subject, and motorized means (30, 32, 38) for driving the platform relative to the chassis. In order to put the subject off balance while moving its lifting polygon, so as to act on the subject'body according to advanced kinematics, the driving means are capable of moving the platform off-center relative to a substantially vertical fixed axis (Z-Z) and of driving the platform in rotation about said axis when the platform is off-center, whereas the platform is provided with peripheral mobile supporting means (60, 62) on corresponding bearing means (64) secured to the chassis (10), said supporting means being capable of resting the platform on the chassis by adjustably inclining same relative to the horizontal in a plane passing through the fixed axis and a central region of the platform when the driving means move the platform off-center relative to said axis.

Abstract: An exerciser includes a base comprising a rotatable central seat and a fixed support upwardly extending out of the seat; first and second carriage assemblies each comprising two opposite rails each having one end formed as a joint pivotably secured to either side of the seat, a bar across the other ends of the rails, and a foot plate adapted to rotate horizontally with respect to the rails and move along the rails; and first and second damping assembly in the first and second carriage assemblies respectively and each comprising two rollers fixedly secured to the seat between the joints and an intermediate portion of the bar respectively, an elastic belt passing the rollers, and two attachments at both ends of the first elastic belt respectively, the attachments being releasably fastened at either carriage assembly.

Abstract: A resistance apparatus for a waist-twisting exerciser wherein the resistance apparatus includes a spring and an adjuster with a pulley block. The adjuster is mounted on a swing element while the spring is fixed at a proper position of the swing element such that the spring is correctly engaged into the pulley block of the adjuster. In applying force to the swing element in motion, the spring may be pulled to create an effective exercise resistance force for increasing the exercise effect. Moreover, the position of the adjuster is adjustable for changing the tension of the spring.

Abstract: A resistance arrangement of a waist-twisting machine, wherein the waist-twisting machine includes a rotating disc for the lower limb of the operator to stand thereon and swiveled under application of force, a rotating handlebar for the upper limb of the operator to hold thereon and swiveled under application of force, and a coupling mechanism for synchronically and reversely coupling the rotating disc and the rotating handlebar. Moreover, a resistance-adjustable apparatus is interposed between the bottom base and the upright rod transmission shaft.

Abstract: A swinging gymnastic machine includes a front swinging assembly, a rear swinging assembly, a handle assembly pivotally secured to the front swinging assembly, and a pedal assembly pivotally secured to the rear swinging assembly. Each of the front and rear swinging assemblies has a spring unit. The front and rear swinging assemblies are durable and are unsusceptible of deflection. The swinging gymnastic machine also has the benefit of reducing the occupied space when it is not in use as both a front leg and the handle assembly are adapted to be folded rearwardly. A person has to exert a great force to overcome the resistance of both the front and rear swinging assemblies through the arms and calves in order to effectively exercise.

Abstract: A resistance arrangement of a waist-twisting machine, wherein the waist-twisting machine having a bottom base, a foot-rotating disc, and a handrail frame. The operation of the foot-rotating disc imparts a motion to a lateral post coupled with the handrail frame such that the hands and the feet rotate in opposite direction. Two driven arms are pivotally attached to the bottom base, and a plurality of elastic elements are interposed between the driven arms. Moreover, a bumping post is positioned between the driven arms for limiting the driven arms to a proper return position. One of the driven arms corresponding to the exercise direction will be extended outwards by a contact roller at the bottom of the lateral post when the lateral post is moved by an external force. At that time, another driven arm that is not moved will stay there to act as a fixing end. Accordingly, the elastic elements may be pulled to produce an expected exercise resistance.

Abstract: A “hip training apparatus” comprises a chassis and a pair of pivotable treadles. At breech of deck cover on said chassis, one ramp is formed at each left and right side descending from central line outwards laterally such that one curved trough with curved track therein is configured at each ramp. Said pivotable treadle, whose front end of back side is set in the chassis, has a roller disposed at rear end of back side thereof. At front rim of chassis, a carrying handle is built on deck cover with an aperture and two lateral slits are configured thereon for having an elastic strap passed inside so that user can arbitrarily perform stretch and twist physical exercise with entire body in balance manner. Meanwhile, by adjusting wing nut acting on the elastic belt, the torsional tension of two pivotable treadles is arbitrarily altered.

Abstract: A method and apparatus for achieving dynamic balance exercise by using an elongated board that is tiltable in a longitudinal direction and energized by a set of motor-driven wheels which are connected to oppose the tilting action. A front to back (pitching) and side to side twisting (yawing) of the board is accomplished concurrently with the longitudinal tilting (rolling) movement to balance the exercise experience and improve the subjects fore-and-aft balance.

Abstract: An exerciser for the sake of training the abdominal muscle group, wherein the operator may rotate on his backbone for taking a twisting exercise for his upper and lower bodies in reverse (different) direction; and wherein the exerciser includes a rotating disc mechanism for the lower limb of the operator to stand thereon and swiveled under application of force, a rotating handlebar mechanism for the upper limb of the operator to hold thereon and swiveled under application of force, and a coupling mechanism for synchronically and reversely coupling the rotating disc mechanism and the rotating handlebar mechanism.

Abstract: A waist twist machine having a base frame, a rear support, and a front upright rod with a handle at the top thereof. A crossbar is positioned near the center of the base frame. A rotating rod is pivotally disposed at the top of the crossbar. A rotating plate assembly is pivotally connected to the rotating rod. The rotating plate assembly includes a front rotating arm, a rear rotating arm, and two foot plates that are pivotally connected to one another. The bottom of the front and the rear end of the foot plates is pivotally attached to the front and rear rotating arms. The front and rear rotating arms each include a pivoting portion at the center thereof. The pivoting portions are pivotally coupled to both ends of the rotating rod. As a result, the front and rear rotating arms create a rotational deformation due to the action of the pivoting points when the foot plates are subject to force and are rotated. In this way, both of the foot plates create more rotational angles.

Abstract: A portable, free standing, exercise device for exercise, core strength, balance, and coordination training as well as general cardio vascular fitness and physical therapy. The exercise device includes a substantially rigid platform for supporting a user. Two spaced apart exercise arms extend upwards and away from the platform to respective rotatable grip assemblies. The exercise arms are attached to the platform through spring members that allow generally unrestrictive multi-axis movement relative to the platform and also maintain the exercise arms in a generally vertical position when not in use. The platform is designed to be used on any generally flat surface or alternatively can be placed on an unstable base to allow for a great challenge to the muscles and systems of balance.

Abstract: A waist twist machine having a base frame, a rear support, and a front upright rod with a handle at the top thereof. A crossbar is positioned near the center of the base frame. A rotating rod is pivotally disposed at the top of the crossbar. A rotating plate assembly is pivotally connected to the rotating rod. The rotating plate assembly includes a front rotating arm, a rear rotating arm, and two foot plates that are pivotally connected to one another. The bottom of the front and the rear end of the foot plates is pivotally attached to the front and rear rotating arms. The front and rear rotating arms each include a pivoting portion at the center thereof. The pivoting portions are pivotally coupled to both ends of the rotating rod. As a result, the front and rear rotating arms create a rotational deformation due to the action of the pivoting points when the foot plates are subject to force and are rotated. In this way, both of the foot plates create more rotational angles.

Abstract: A rocking type exercising apparatus includes a movable unit on which a user rides and a driving unit for causing the movable unit to perform a rocking motion. The driving unit is designed to drive the movable unit to rock in forward/backward directions of the user riding on the movable unit and to move the movable unit forward at a greater acceleration than when the movable unit is moved backward.

Abstract: A rotational exercise apparatus (10) for strengthen and toning the human body which consists of a collapsible stationary support frame (20) with horizontal gripping arms (22) and a base plate (52) attached in a horizontal position to the frame. A rotatable platform (54) is positioned on top of the base plate and freely rotates with a pair of swiveling foot plates (56) mounted on the platform upper surface. During use, a person places their foot on each foot plate (56) and exercises by rotating and counter rotating both the platform (54) and the foot plates (56) simultaneously while maintaining balance by holding onto the gripping arms (22).

Abstract: An inflatable training device having a flexible concave shaped dome for stepping on by a user and a base. A portion of the dome wraps around a portion of the base to form a bumper ring that is seated on the floor. The inner area of the dome is filled with air through either a high volume valve located in the base or a low-volume valve in the dome that permits the firmness of the device to be easily adjusted.

Abstract: A waist twister includes a base disk, a rotation disk rotatably mounted on the base disk, a top disk secured on the rotation disk, a drive motor secured on the top disk and having an impeller, and a top cover secured on the top disk to cover the impeller. Thus, the impeller has an unevenly distributed weight on the drive motor, so that when the drive motor is operated to rotate the impeller, the drive motor produces a vibration to vibrate the top disk, the rotation disk and the base disk to provide a swaying function to the user standing on the top disk. In addition, the top cover has ventilating holes to introduce the air flow produced by the impeller to flow outwardly to provide a heat dissipation effect to the user.

Abstract: A muscle stretching machine designed to provide the user with easy system of functional stretching and also provide the user with flexibility feedback information as to the performance of the stretch, such as but not limited to the angles of the stretch, the force of the stretch, the position of the stretch, and the duration of the stretch. A user of the muscle stretching machine can turn on the central processor, adjust the height of the machine to suit their height or to suit the type of stretch to be performed, step onto a round turntable subassembly, place the leg to be stretched on a foam pad designed to raise and lower the leg, pull down on a handle to raise the leg being stretched and read the information displayed on the central processor. When the handles are pulled down the leg is raised. When the handles are allowed to go up the leg is lowered.

Abstract: Ski simulation device has at least two arching rails parallel each other on a sloped plane elevated at an angle of a variable degree, joined to frame structure which includes handgrip and cross rail, arching rails providing track; a carriage rides in side-to-side movement on track; whereas carriage on which platform is mounted around axis, whereas platform on which two cradles each is mounted around its axis, whereas cradles wherein two rocking footrests are nested; resistance members providing a constraint on carriage as it rides on track; dampening member extending from front section of frame structure joined to midpoint on transverse bar of which ends joined to cradles; an assembly of rollers mounted on frontal sides of both cradles, whereby rollers as guide roll on cross rail; and rod extending from front section of frame structure to a point where mounted ball can be reached by user's both knees.

Abstract: The invention relates to medical engineering and can be used for therapeutic and remedial exercises and for remedial gymnastics or sports. The inventive training device for physical therapy comprises a frame provided with a base, a platform placed on the base, an additional platform and at least one arm support. Said platform and additional platform are embodied in the form of for supports and are connected in such a way that they are rotatable together with the base. The base is placed on the frame in such a way that it is rotatable or rotatable and fixable or rotatable and fixable and connected to means for producing and/or adjusting an operating load. A distance between the center of rotation of the platform and the center of rotation of the additional platform ranges from 200 to 600 mm. The height of at least one arm support ranges from 500 to 2300 mm.

Abstract: A “hip training apparatus” comprises a chassis and a pair of pivotable treadles. At breech of deck cover on said chassis, one ramp is formed at each left and right side descending from central line outwards laterally such that one curved trough with curved track therein is configured at each ramp. Said pivotable treadle, whose front end of back side is set in the chassis, has a roller disposed at rear end of back side thereof. At front rim of chassis, a carrying handle is built on deck cover with an aperture and two lateral slits are configured thereon for having an elastic strap passed inside so that user can arbitrarily perform stretch and twist physical exercise with entire body in balance manner. Meanwhile, by adjusting wing nut acting on the elastic belt, the torsional tension of two pivotable treadles is arbitrarily altered.

Abstract: The present invention describes a specialized exercise apparatus and method for use that targets the muscles in and around the abdominal, oblique muscles and mid section of the body. The machine is comprised of a flat platform upon which an individual stands while grasping a pair of handlebars that are positioned at waist height. The handle bars are attached to the top of a vertical riser that extends downwardly and is attached to a pair of horizontal rotating pivot arms. The vertical riser is additionally comprised of a resistance mechanism that allows for compression of the vertical riser in a downward movement. The pivot arms are attached to the center of a rotating power pulley horizontally suspended by bearings below the forward area of said platform. The power pulley is connected by a belt to a resistance mechanism.

Abstract: Portable machine for doing stair climbing exercises which has a base movable between horizontal and upright positions, a wheel mounted on the base for rolling engagement with the floor when the base is in the upright position, a first step movable between an operative position beside the base and a storage position within the base, a second step surmounted on the base, and a post pivotally attached to the base for movement between a supporting position generally perpendicular to the base and a handle position generally parallel to the base.

Abstract: An ambulatory assistance device is provided, having a base that supports an individual in a generally upright position. A forward support frame is provided for engagement between the individual's upper extremities and the operating surface. Forward ambulation may be achieved by shifting the individual's mass toward one side of the device and then pulling on the support frame to pivot the opposite side of the device in a generally forward direction. Repeating the process in a mirror fashion moves the other side of the individual and the device in a generally forward direction. Optional platforms and foot restraints are provided for positioning and securing the individual on the base. Various base configurations are provided to adjust the performance of the device according to conditions.

Abstract: A multi-stage orientating assembly for an inversion table has a stationary seat, an orientating device and an operating device. The stationary seat is connected securely to the sidewall of the table of the inversion table and has a longitudinal beam and a connecting jacket. The orientating device is connected to the mounting bracket of the inversion table and the stationary seat and has a mounting head and a clamping device. The mounting head is connected to the connecting jacket. The clamping device is connected to the stationary seat and has an engaging assembly and an orientating assembly. The operating device is connected to the stationary seat and the orientating device and has a transmitting assembly and a handle. The transmitting assembly is connected to the engaging assembly. The handle is connected securely to the transmitting assembly.

Abstract: An exerciser includes a hollow base having two openings. Each opening includes at least one first circular groove. Two bearing members are received in the two openinigs, and each has a frame with which a plurality of balls are rotatably engaged. Two disks are rotatably mounted on the two bearing members respectively, and each disk includes at least one second circular groove and teeth defined in an underside thereof. The balls are rotatably engaged between the at least one first circular groove and the at least one second circular groove. A driving gear is located in the hollow base and engaged with the teeth of both of the two disks.

Abstract: A waist and buttocks exerciser has a base, a seat being mounted pivotally on the base, multiple connectors being mounted on the base, a resilient rope being wrapped around the connectors and two leg supporters being attached rotatably onto the base. Each leg supporter has a pin being mounted through the leg supporter and being mounted between and abutting the resilient rope. When a user sits on the seat and places his feet on the leg supporters, the leg supporters can be driven toward different directions. With pins abutting and keeping pushing the resilient rope, user's waist, buttocks and thighs can be exercised.

Abstract: A rotatory abdominal crunch machine mainly uses a rotating disc fitted on an eccentric revolution disc to assist the user in swinging his or her waist in circular motion so as to strengthen the abdominal muscles. A rolling element, which is embedded in said rotating disc, drives said rotating disc to rotate in 360 degrees.

Abstract: A method and apparatus for achieving dynamic balance exercise by using an elongated board that is tiltable in a longitudinal direction and energized by a set of motor-driven wheels which are connected to oppose the tilting action. A front to back (pitching) and side to side twisting (yawing) of the board is accomplished concurrently with the longitudinal tilting (rolling) movement to balance the exercise experience and improve the subjects fore-and-aft balance.

Abstract: A twisting exerciser includes a base and a first pivot assembly and a second pivot assembly are respectively connected to the base. A first extension is rotatably connected to the first pivot assembly and a handlebar unit is connected to the first extension. A knee support unit is rotatably connected to the second extension which is rotatably connected to the second pivot assembly. Two support members are connected to the knee support unit.

Abstract: An exerciser has a base, a driving device and a supporting board. The driving device is mounted between the base and the supporting board and driving the center of the supporting board to move along a three dimensional 8-shaped track. Accordingly, an exerciser for realistic simulation of wave surfing and having a simplified structure is provided.

Abstract: In accordance with the principles of the present invention an exercise device is provided that comprises an oscillating platform and a support platform. The oscillating platform is connected to the support platform by a support having a main axis and an oscillating platform axis extending at an angle from the main axis, such that the oscillating platform defines a plane that is non-parallel to a plane defined by the support platform. An oscillating platform stabilizer enables the free angular undulating movement of the oscillating platform. Inertia or momentum of the angular movement of the platform is provided, thereby providing a fluid and continuous change in the angular orientation of the platform.

Abstract: A footstool is described which allows to exercise feet, legs and ankles even while being in a seated position.

Abstract: A balancing device has a base and an inflatable flexible portion wherein the center of the inflatable portion is higher than the edges. The device is used by placing the base on the floor and standing and moving on the bladder.

Abstract: An exercise device having a first base member with foot platforms mounted thereon for rotating a person's lower body and a second base member including at least one handle to be grasped by a person for rotating a person's upper body. The first and second base members are mounted so as to be capable of rotating about the same vertical axis. Resistance means and/or weights may be used to increase the force needed to rotate the base members. Either base member may also be fixed so as not to rotate. Similarly, the foot platforms may rotate on the first base member independently of the first base member or can be fixed thereto so as to remain stationary in relation to the first base member. The second base member may be mounted adjacent the first base member and concentric therewith the handle extending upwardly.

Abstract: A board for balance training has an upper footstep surface, lower bearing surface and a progressive series of concentric, cylindrical sub-frames depending from the lower surface which enclose progressively smaller framed-in areas of the bearing surface within progressively smaller framed-in crown-cavities defined by each. This progressive series ranges extremes of a major in size to minor, with none, one or more intermediates. All at least but the major sub-frame are selectively removable from the board for clearing way for progressively larger framed-in crown-cavities. Any of the sub-frames permit a training ball to roll freely sandwiched between the board and ground unless stopped against any portion of that sub-frame. Selectively utilizing a minor sub-frame over, conversely, exclusion thereof in favor of any of the progressively larger sub-frames, progressively changes the level of difficulty for trainees standing on the upper footstep surface.

Abstract: An adjustable stretching device 6 includes a stretching surface 20 that is raised off of the floor on which the user stands, flexes, and stretches the calf and lowers the leg muscles. The stretching surface 20 can be angled along a primary longitudinal angle 26 to produce a more intense stretch. Specifically, the stretching surface 20 can be angled up to 90 degrees. Additionally, the user can put a leg up on the center pad 50 and stretch the hamstring muscles. The adjustable stretching device 6 also includes a padded framework that allows a user to put a leg up on any of the bars at different heights and further stretch the leg muscles. The padding also provides protection for the bar. The stretching surface 20 of the adjustable stretching device 6 is preferably a dual stretching surface 20 that is angled either away from or towards the longitudinal centerline of the dual stretching surface 20 along the primary longitudinal angle 26. This angle can range between 0 and 45 degrees.

Abstract: An exercise device for conditioning and rehabilitation of the nerves, muscles, bones, and joints of the body by facilitating or limiting range of motion and biomechanical forces around the horizontal and vertical axes. The device includes a fulcrum connected to a first side of a base. The fulcrum extends outward from the base and provides a point about which the device pivots. Fulcrum includes a recess having a removable attachment. When the attachment is connected, the fulcrum has a rounded shape. A user positioned on the base can pivot about the fulcrum in substantially 360° of motion to fully work their body. When the attachment is removed, rails forming the recess limit the range of motion to a user to between substantially a first orientation and a second orientation. The range of motion with the attachment removed being less than the range of motion with the connected attachment.

Abstract: A method and apparatus for exercising internal and external oblique muscles utilizes lateral forces generated by the feet and maintain the upper body in a fixed position to facilitate exercise of the oblique muscles. The apparatus and method vary the inertial forces applied outside the feet to affect the degree of difficulty of the exercise.

Abstract: Balancing equipment that provides a selectively dynamic platform for an individual thereon. The weight and movement of the individual causes the platform to tilt in any direction, thereby attempting to throw off the balance of the individual, causing the individual to work on maintaining balance while on the dynamic platform. The dynamic nature of the platform can be adjusted to correspond to the balancing abilities of individuals. An adjustment mechanism increases or reduces the amount the platform is able to tilt, without requiring the raising or lowering of any component of the platform. An exercise mechanism can also be connected to the platform to further modify the dynamic nature of the platform.

Abstract: An exercise device having a first base member with foot disks mounted thereon for rotating a person's lower body and a second base member including handles to be grasped by a person for rotating a person's upper body. The first and second base members are mounted so as to be capable of rotating about the same vertical axis. The first and second base members may be mechanically interconnected so as to be forced to rotate together but in opposite directions. Alternatively, the first and second base members may be disconnect from each other so that they can rotate independently. Either may also be fixed so as not to rotate. Similarly, the foot disks may rotate on the first base member independently of the first base member or can be fixed thereto so as to remain stationary in relation to the first base member. The second base member may be mounted overhead with the handles extending downwardly or it may be mounted adjacent the first base member and concentric therewith with the handles extending upwardly.

Abstract: A recreational balancing apparatus comprises a frame defining a horizontal opening therein, and a balancing board mounted on a joint assembly in a manner which allows the balancing board to tilt in every direction, and be capable of 360° rotation. The apparatus further comprises an upstanding support post, the post being secured to a lower portion of the joint assembly, and a lower portion of the support post passes downwardly through the frame opening. Support legs are secured to the frame, and a collar, having an opening therein, is provided. A first set of high tension springs connects the collar to the frame, the springs each being connected to a periphery of the collar and an inside portion of the frame, so that the collar is supported centrally within the horizontal frame opening, to provide a stable center for the support post to slide through, and achieve limited tiltable movement in a radial axis about a center of rotation positioned in the center of the collar.

Abstract: A twister includes a follower slidably attached onto a housing and having a channel and a rack, a rod rotatably attached to the housing, a lever secured to the rod and having a pin attached to a free end and slidably engaged in the channel of the follower, to allow the follower to be forced to slide relative to the housing in a reciprocating action when the pin and the lever are rotated relative to the housing. An axle is rotatably engaged to the housing and includes a pinion engaged with the rack of the follower, to allow the axle to be rotated in a reciprocating action when the follower slides relative to the housing in the reciprocating action. A foot support is secured to the axle and driven by a motor.

Abstract: An exercise apparatus including a base, a platform, and a resilient member located between and attached to both the base and the platform. The resilient member can rotate, twist, and tilt in every angle while also providing a resistance force to all degrees of movement. The platform may be modified by the addition of an elastomeric material over its surface to provide additional traction or padding. The platform may also have notches placed around its perimeter, through which resistance tubing or rope may be placed such that upper body resistance motion may be integrated into the exercise apparatus. Furthermore, support members may be disposed under both the platform and base for additional support and rigidity. The resilient member may have a flange, which in conjunction with an adjustment mechanism, may affect the amount of resiliency of the resilient member. The adjustment mechanism may have a handle, a gear and ratchet assembly, and a plurality of locking mechanisms.

Abstract: A proactive machine is used for assessing and improving a user's proprioception. The machine has a tilting platform upon which the user stands, a non-rotating tilting means connected to the platform for tilting the platform along a first axis and along a second axis perpendicular to the first axis, and a control means for controlling the tilting means.

Abstract: A tiltable exercise bench featuring a pad hingeably mounted on a vertical post by a cantilevered hinge joint such that the bench can be tilted to a selected angle depending on the requirements of the user. An arcuate bar with notches on one edge has ends secured to the underside of the pad, extends downwards toward the base of the bench. The arcuate bar has notches formed along one elongated edge. A spring-loaded lever is arranged to engage a selected one of the notches whereby the bench is fixed at a selected angle of tilt. The lever can be operated from the left or right side of the bench. A series of tubular bars, affixed perpendicular to the underside of the bench support bar, provide selectable positions for telescoping onto a bar attached to the bench seat or a bar attached to a padded bar for performing situps or back extensions.

Abstract: A balancing board allowing for selection of a desired degree of stability is disclosed. The balancing board has a platform and a hemispherical fulcrum slidably mounted to platform and bifurcated into a pair of pivot members. Each pivot member is independently positionable along an underside of the platform opposite of an engagement surface upon which a user positions themselves to practice balancing training techniques. When the pivot members are slid together, the balancing board is freely pivotable about any axis in the plane of the surface on which the pivot members are resting. Conversely, when the pivot members are spaced apart from each other, the balancing board resists pivoting in a direction aligned with the axis along which the pivot members are slidable.

Abstract: An exerciser includes a foot support disposed on a base to support feet of users, a handle rotatably attached to the base with a shaft, a pulley secured to the handle, and a seat rotatably supported on the pulley to rotatably support the users. A cable may be coupled between the pulley and the foot support, to selectively couple the foot support to the handle via the pulley. The foot support includes a lever pivotally secured on the base, and the cable includes two ends coupled to the ends of the lever with brackets. Each of the brackets includes an end panel having a passage to receive a tube of a barrel which includes a passageway to receive the ends of the cable.

Abstract: A balance board for exercising, sports training, recreation and the like, uses a board member that rides along a roller along either the central longitudinal axis of the board member or along the central vertical axis of the board member. Stop members are removably attached to the board member for limiting the range or ride of the board member with respect to the roller on either axis and to further selectively vary the distance of travel of the board member when it is traveling on its longitudinal axis.

Abstract: An exerciser includes a handle and a supporting device rotatably secured to a base, two foot pedals are rotatably secured to the support with spindles for allowing the users' feet to be rotated relative to the supporting device and for preventing the users from being hurt or twisted while rotating relative to said base with the supporting device. A device may couple the the handle to the supporting device for allowing the handle to be rotatably coupled to the supporting device. The handle may include a shank rotatably and foldably secured to a lower segment.

Abstract: An exerciser includes a handle and a support rotatably secured to a base, two foot pedals are rotatably secured to the support with spindles for allowing the users' feet to be rotated relative to the support and for preventing the users from being hurt or twisted while rotating relative to said base with the support. The support includes two blocks pivotally secured between two pivotal and parallel beams for supporting the foot pedals. A device may couple the the handle to the support for allowing the handle to be rotatably coupled to the support.

Abstract: The present invention is an impact resistant composite and helmet made thereof. The helmet comprises an impact resistant composite shell. The composite shell comprises a plurality of prepreg packets. Each prepreg packet comprises at least about 2 and preferably 5 to 20 prepreg layers. There are from 2 to 50 and preferably 5 to 20 prepreg packets. Each prepreg layer comprises a plurality of unidirectional coplanar fibers embedded in a polymeric matrix. The fibers of adjacent layers in the prepreg packets are at an angle of from 45.degree. to 90.degree., preferably 60.degree. to 90.degree., more preferably 80.degree. to 90.degree. and most preferabaly about 90.degree. from each other. The angle of the fiber in alternate layers is preferably, sustantially the same.