A fluid-damped direct-drive bicycle riding platform includes a rack for supporting, a main shaft, a transmission shaft and a fluid resistor, wherein the rack includes a front bottom foot tube, a rear bottom foot tube, a front support rod, a main beam and an angle adjuster; the front support rod is fixed on the front bottom foot tube, the main beam is fixed on the rear bottom foot tube, the angle adjuster is fixed on the main beam, the upper end of the front support rod is hinged to the angle adjuster through a spline, the main beam is provided with the main shaft and the transmission shaft, the main shaft is press-fitted on the main beam in an interference fit, the main shaft and transmission shaft are driven by a pulley and a belt to drive the liquid resistor fixed to the left end of the transmission shaft.

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

An exercise machine allows a user to perform a variety of resistance exercises with adjustable resistance levels. The machine is made up of an arm, a user platform, a horizontal base, an adjustable counterweight arrangement, a pull rod, a drive chain system, sprockets, shafts, adjustable fan, a slip bearing, a recoiler, a plurality of wheels, a drive chain system housing, a user back support, a user cable grip, and a circuit-breaking sensitive rubber mat. When the arm is moved upwards (by a user) the pull rod attached to a drive chain initiates the drive chain system rotation. The drive chain system rotation includes an adjustable weight fan that creates resistance to the arm's upper movement through inertia. The adjustable counterweight arrangement determines the arm drop speed and the arrangement has multiple positions. Other variants include a plurality of electronic encoders.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An apparatus (100) for back improvement and lower-back pain and knees relieving, the apparatus comprising for each foot of a user, including a pedal (40) shiftable along a linear axis, for allowing a foot of the user to exert force on the pedal (40), a sensor (18), for continuously sensing a force exerted on the pedal (40) by the foot, a mechanism for exerting resistance force on the pedal, and a controller (10) for reading a sensing of the sensor, the controller being adapted to instruct the mechanism to exert continuous resistance force on the pedal such that the pedal submits to the foot.

A unique full body exercise experience is provided by embodiments that produce user controlled resistance that can be assigned verbally, remotely by electronic means or manually. The embodiments can sense hand and foot location and then automatically change the resistance according to those locations, or by spoken word or programmed time. Exercise resistance can be offered in the three dimensions of space. Muscle groups can be exercised in complementary fashion with movements that fully stress the muscles. Two-movement exercises can be repeated endlessly or complicated ensembles in 3-space can be strung together, all with unlimited, user-defined changes of resistance. Every movement that is possible to perform with free weights or universal gyms is available to the user. Movements that are impossible with weights are easily performed with great safety. There has never been anything like this.

A unique full body exercise experience is provided by embodiments that produce user controlled resistance that can be assigned verbally, remotely by electronic means or manually. The embodiments can sense hand and foot location and then automatically change the resistance according to those locations, or by spoken word or programmed time. Exercise resistance can be offered in the three dimensions of space. Muscle groups can be exercised in complementary fashion with movements that fully stress the muscles. Two-movement exercises can be repeated endlessly or complicated ensembles in 3-space can be strung together, all with unlimited, user-defined changes of resistance. Every movement that is possible to perform with free weights or universal gyms is available to the user. Movements that are impossible with weights are easily performed with great safety. There has never been anything like this.

The present invention relates to a boxing fitness device and a detection method thereof, the boxing fitness device of the present invention includes a frame, punching zones, prompting devices, sensing devices, a first wearable device, a second wearable device and a computation unit. The punching zones are disposed in the frame and the prompting devices are disposed on the punching zones, respectively. When a left hand or a right hand of a user touches one of the punching zones, the sensing devices can sense a first to-be-sensed part of a first wearable device or a second to-be-sensed part of a second wearable device worn on the hands of the user. As a result, the boxing fitness device and the detection method thereof of the present invention can sense the first to-be-sensed part and the second to-be-sensed part to detect the user's correct punching action.

Fitness equipment is installed in or on a ground surface for enabling an exercise by a user in a wheelchair. The fitness equipment includes a base operably installed adjacent a wheelchair space. The equipment includes an upwardly extending post the base to an upper end, and includes a front facing surface which faces the wheelchair space, and an opposed rear facing surface. A pneumatic cylinder has a first pivot connected to the rear facing surface, and a second pivot attached to a cam, the cam being pivotally attached to a pivot mount of the upwardly extending post. A U-shaped arm assembly that extends from the cam, around the upwardly extending post, to a pair of laterally spaced ends positioned on either side of the wheelchair space without extending into the wheelchair space.

An apparatus for securely and removably attaching an apparatus for adjusting the hydrodynamics of a watercraft is provided. The apparatus is attached to the watercraft by an elastic cord. One or more flow resistance members are removably attached to the cord. The cord is looped in a configuration that allows for infinite length/size adjustment. A closure for forming the loop can be released, allowing the user to add or subtract resistance members to achieve a desired resistance.