A variable-resistance exercise machine with network communication for smart device control and brainwave entrainment, comprising an exercise machine with a plurality of moving surfaces, that each provide an independent degree of resistance to movement, a sensor that detects movement and provides output to a controller, a brainwave entrainment manager that selects a brainwave entrainment frequency based on the sensor output, and a controller that receives an input from a user device, changes the operation of the plurality of moving surfaces based on the input, and sends the brainwave entrainment frequency to the user device.

A bicycle simulator includes a base portion having a frame shape; a frame support portion supported by the base portion and supporting a bicycle frame connecting a front wheel of a mounted bicycle to a rear wheel of the mounted bicycle; a first treadmill extending in a running direction of the bicycle, supporting the front wheel of the bicycle, and rotating according to rotation of the front wheel; and a second treadmill extending in the running direction of the bicycle, supporting the rear wheel of the bicycle, and rotating according to rotation of the rear wheel, wherein the frame support portion is disposed between the first treadmill and the second treadmill.

A variable-resistance exercise machine with wireless communication for smart device control and interactive software applications, comprising a wireless network interface that receives input from a user device and provides output to a user device; a plurality of moving surfaces that each provide an independent degree of resistance to movement based on received input and that detect movement and provide output to a user device based on the movement; and a plurality of rigid rails that provide a rigid support for a human user to grasp, and that provide attachment points for a user to affix a variety of devices.

Methods and systems for controlling a force generator of an exercise apparatus are described wherein the method comprises determining or receiving angular positions of a rotatable axle of an exercise apparatus when a force is applied to a force receiving structure of the exercise apparatus, the rotatable axle being part of a mechanical power transmission system connecting the force receiving structure via the rotatable axis to a force generator which is controlled by a computer based on a kinematic model, the kinetic model representing equations of motion of the exercise the apparatus; determining or retrieving first geometrical scaling values associated with the angular positions and incorporating the first geometrical scaling values into the kinematic model to form a first modified kinematic model, the first geometrical scaling values being associated with a non- circular gear of a first predetermined non-circular geometry; and, determining applied force values for the angular positions, each applied force value representing a force that is applied to the force receiving structure; and, controlling the force generator based on first resistive force values to mimic an exercise apparatus comprising a mechanical power transmission system including the first non-circular gear, the first resistive force values being computed using the first modified kinematic model and the applied force values.

An exercise apparatus orienting foot pedals and handlebars having first and second rotating armatures for generating subtended paths of rotation, with motors to revolve the first and second rotating armatures in opposite directions and allowing the subtended paths to migrate from a first two-dimensional plane into a second two dimensional plane and back into the first two-dimensional plane.

The present disclosure is directed to recumbent exercise machines and associated systems and methods. In one embodiment, for example, a recumbent exercise apparatus can include a seat, two linear guide tracks forward of the seat, and two pedal assemblies movably coupled to corresponding linear guide tracks positioned forward of the seat. The pedal assemblies can be configured to move back and forth along the linear guide tracks. The recumbent exercise apparatus can further include linear actuators operably coupled to each of the linear guide tracks and configured to move the linear guide tracks up and down in a vertical direction. The pedal assemblies can be configured to move in elliptical patterns when the pedal assemblies move back and forth along the linear guide tracks and the linear actuators move the linear guide tracks up and down.

A frame lifting mechanism includes a base, a motor, a lead screw, a sliding member, a lifting member and a supporting shaft. The motor is connected to the lead screw, and the lead screw is fastened onto a transmission tube, allowing the transmission tube to move forward and backward while being driven by the lead screw. The sliding member is installed on a sliding track arranged on the base and connected to the transmission tube, allowing the sliding base to actuate with the transmission tube synchronously. A rear end of the lifting base is pivotally attached onto the base for support, and the supporting member uses its two top and bottom ends to be pivotally attached onto the lifting member and the sliding member respectively, allowing the supporting shaft to utilize the movement of the sliding member to drive the lifting member to move upward and downward.

An elliptical exercise device has a frame and guide link pivotally attached thereto. A foot support link is pivotally connected to a lower attachment point of each guide link so that when the guide links pivot relative to the frame, foot receiving areas of the foot support links move in a path of travel having a horizontal component of motion. A cam drive has cams supported for rotation about an axis of rotation and pivoting arms each engaging one of the cams such that rotation of the cams causes movement of the pivoting arms. Flexible elements couple the foot support links to the pivoting arms such that rotation of the cams moves the foot receiving areas of the respective foot support links in a path of travel having a vertical component of motion.

A method for controlling a control interface of an exercise machine during the enjoy of a multimedia content includes providing a multimedia content of a personal trainer preparatory to performing a set workout program on the exercise machine, usable through the control interface; associating configuration instructions of the exercise machine with the multimedia content readable by a data processing unit of the exercise machine, synchronized with playing of the multimedia content; during the enjoy of the multimedia content, if a playing time instant falls within a set time interval provided by the configuration instructions, dynamically modifying the control interface of the exercise machine so that it assumes a respective operating configuration corresponding to the set time interval reached by the multimedia content, in the respective operating configuration, showing the user on a display module, temporary controls usable through the control interface; and setting the exercise machine based on the temporary controls.

Described herein are various embodiments of differential air pressure systems and components for differential air pressure systems. The air pressure systems comprise a chamber for receiving at least a portion of a user's body. Pressure in the chamber can be changed to adjust force on the user's body. Described herein are various methods and related structures for sealing a user into a pressurizable chamber. Also described herein are various methods and related structures for changing the shape and/or height of the chamber. Described herein are various types and configurations of chambers and support structures for chambers. Also described herein are various methods and related systems for treating various conditions using the differential air pressure systems, including but not limited to obesity, cardiac disease, multiple sclerosis, cerebral palsy, or Down Syndrome.