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.