A foot support assembly for an exercise machine may be configured for sing-hand operation (e.g., cinching or releasing of the foot strap), The foot support assembly may include a footplate coupled to the frame of the exercise machine and configured to support the user's foot during exercise and a strap coupled to the footplate and configured to resist separation of the user's foot from the footplate. The strap is operatively associated with a quick release ratchet mechanism, which is configured to be unlocked simply by pressing a lever of the ratchet to allow the ratchet strip to reverse, releasing the user's foot from the strap. The foot support assembly may be provided on each side of the seat rail of a rowing machine, which may alternatively or additionally include a multi-grip handle including a plurality of grip portions configured to position the user's hand at different orientations to one another.

There is disclosed a system for conducting multi-member group competitions involving physical exertion, the system includes a competition server that serves to designate a set of parameters for a competition involving at least two competing groups of individuals engaged in physical activity, the set of parameters defining a win condition requiring physical activity to be completed by at least two separate individuals within each group. The system further receives data representative of physical activity of multiple individuals in a first group, receives data representative of physical activity of multiple individuals in a second group, determines whether the win condition has been satisfied by the first group or the second group, and identifies a winner as the first group or the second group that completed the win condition.

An exercise device includes a base defining an inner volume and a top supported by the base, the top defining an aperture. The exercise device further includes a force sensor configured to measure force on the top and a motor disposed within the base and below the top, the motor including a cable extendable through the aperture. The exercise deice further includes a controller communicatively coupled to each of the force sensor and the motor. The controller is adapted to actuate the motor in response to forces applied to the top as measured by the force sensor. The controller may also actuate the motor in response to one or more additional parameters related to the speed or force with which the cable is manipulated (e.g., pulled by a user).

The invention relates to a balance base for a rowing machine. The base is used as a stand for the rowing machine, and the rowing machine can be positioned thereon in a fixed manner. At least one spring element is provided, wherein the at least one spring element is arranged between an upper frame and a lower frame, and the at least one spring element comprises an elastic or viscoelastic material, the tilting rigidity of which is both lower than the tensile-compressive rigidity of the spring and lower than the shear stiffness of the spring. Additionally, a form-fitting or force-fitting fixture of the upper frame to the rowing machine is provided.

This disclosure relates to a torque sensing system. The torque sensing system comprises a rotatable shaft (102) having a first part and a second part, the shaft comprising a spring structure (122) between the first and second part; a first readout structure (130) connected to the first part, the first readout structure (130) comprising first position indicators, and a second readout structure (132) connected to the second part, the second readout structure (132) comprising second position indicators; a detector system for detecting the first and second position indicators and generating a first detection signal indicating respective passing times for the first position indicators and a second detection signal indicating respective passing times for the second position indicators; and a processor. The processor is configured for determining an angular position of the first readout structure (130) occurring at a particular time instance based on a detected passing time of at least one first position indicator on the first readout structure (130) and on a first relation between angular position of the first readout structure (130) and time around said particular time instance; and determining an angular position of the second readout structure (132) occurring at the particular time instance based on a detected passing time of at least one second position indicator on the second readout structure (132) and optionally based on a second relation between angular position of the second readout structure (132) and time around said particular time instance; and, determining an angle of twist at the particular time instance based on the angular position of the first readout structure (130) and the angular position of the second readout structure (132), the angle of twist being associated with a torque applied to the first and/or second part of the rotatable shaft (102).

An electric generator which can be coupled to an exercise machine is described. The electric generator is connected to a power grid. Using the mechanical movements of the exercise machine, the generator can produce and feed electricity into the grid, thereby creating a decentralized grid system which is immune to node failures. The generator can communicate with a smart device of a user. The generator can inform the user of the amount of electricity generated by the user while working out. The generator or an application of the smart device can communicate this data to a service provider. Using this data, the service provider can pay the user for the electricity generated. In particular, the service provider can utilize a cryptocurrency to reward the user for the human generated electricity.

A power rowing machine that combines the seat of a rowing machine with a weight arm for resistance training. The power rowing machine avoids the flywheel of a conventional rowing machine and instead uses a weight arm. The weight arm serves two purposes. First, weight can be added to the arm for progressive resistance training. Second, the pivoting action varies the resistance through the movement. As a slow controlled resistance exercise the back and the arms of the rowing stroke cannot move the same resistance as the legs. Similarly, a user at the beginning of the rowing motion, with the legs compressed, cannot move as much resistance as with knees at a 90-degree angle.

The present invention is a portable rowing machine that allows a user to perform rowing, skiing, paddling, or any other physical activities at any suitable location. The portable rowing machine contains a housing, a pulley, a flywheel, a planetary gear assembly, an anchor, a retraction mechanism, and a pull cord. The housing contains a central gear support. The pulley, the flywheel, the planetary gear assembly, and the retraction mechanism are positioned within the housing. The central gear support is positioned within the housing. The planetary gear assembly is positioned within the central gear support. The pulley and the flywheel are axially connected opposite to each other along the planetary gear assembly. The retraction mechanism is operatively connected to the pulley, where the retraction mechanism is configured to retract the pull cord into a spooled state around the pulley. The anchor is externally connected to the housing.

Provided is a resistance device of a fitness machine comprising a wind drag unit and a magnetic resistance unit. The wind drag unit includes an air volume adjusting disc. The magnetic resistance unit includes a guide rail disc, a metal ring sheet, at least one magnetic seat, and at least one guide post. The guide rail disc has a guide disc rail through which the guide post penetrates. The magnetic seat is used to generate magnetic resistance with the metal ring sheet, and the magnetic seat has a magnetic seat rail. The guide post is connected to the air volume adjusting disc, penetrates through the guide disc rail, and extends into the magnetic seat rail. The guide post moves in the magnetic seat rail with rotation of the air volume adjusting disc to drive the magnetic seat to pivotally rotate relative to the guide rail disc.

A treadmill includes a platform where the platform includes a first side panel and a second side panel spaced apart at a distance from the first side panel, and a gap defined between the first side panel and the second side panel. The treadmill also includes a running deck contained within the platform and exposed within the gap, a first pulley connected to the running deck, a second pulley connected to the running deck opposite the first pulley, a tread belt surrounding the first pulley and the second pulley, a first post removably connected to the platform, a second post removably connected to the platform, and a first rail transversely connected to the first post and the second post.