Abstract: A single-sprocket system for integration into a bicycle trainer, the system including a sprocket having teeth about a perimeter of the sprocket, a first planar side, and a second planar side, wherein the teeth of the sprocket are configured to engage a chain of a bicycle mounted to the bicycle trainer. The system further includes a first chain guide adjacent the first planar side of the sprocket, wherein the first chain guide is configured to re-engage the teeth of the sprocket with the chain when the chain has become disengaged from the teeth of the sprocket towards the first planar side, and a second chain guide adjacent the second planar side of the sprocket, wherein the second chain guide is configured to re-engage the teeth of the sprocket with the chain when the chain has become disengaged from the teeth of the sprocket towards the second planar side.

Abstract: There is disclosed a method of operating a server device for use in conjunction with software operating on a client device to engage in exercise, the method includes establishing a three-part communication connection between the server device and the client device. The three parts are a first connection which is an asynchronous channel for transmission of streamed data to a receiving device, a second connection which is a transmission channel for transmission of messages that require a response from a receiving device, and a third connection which is a receiving channel for receipt of messages that are responses to a device requesting a response. The method then simultaneously communicates a first set of data over the first connection and a second set of data over at least one of the second connection and the third connection.

Abstract: In a system and method for monitoring movement, a movement monitoring device is configured to engage with a rotating belt of a treadmill. The movement monitoring device includes a rotational tracking device to measure rotational motion of the belt and send the rotational motion measurement to a computing device, and a vertical tracking device to measure vertical motion of the belt and to send a vertical motion measurement to the computing device. The system further includes a computing device for receiving the rotational motion measurement and the vertical motion measurement and to generate a Symmetry Index for the user on the rotating belt of the treadmill, the Symmetry Index being a comparison of more than one measure of symmetry for a first leg and a second leg of the user derived from the rotational motion measurement and the vertical motion measurement.

Abstract: There is disclosed a system for engaging in exercise. The system includes a communications interface for receiving instructions from control software controlling operation of the exercise device, a resistance device for generating resistance to the exercise and applied to the exercise device, the resistance device for increasing or decreasing resistance for the exercise under control of the control software, and the control software operating to generate a simulated haptic movement, using the resistance device, by temporarily altering the resistance applied to the exercise device by the resistance device.

Abstract: 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.

Abstract: Devices and methods for determining various occurrences and anomalies within a step are provided. A device to determine characteristics of a step includes at least one sensor to measure acceleration of a foot in at least two directions, at least one processor to execute instructions stored in a memory and to determine accelerations in first and/or second directions meet criteria to determine a footstrike and a push off of a foot from a surface. Slipping of feet while walking and running, clipping of feet while walking and running, and tripping and falling while walking and running may be indicators of overall health and fitness, particularly in older individuals.