Methods, apparatus, systems and articles of manufacture for measuring and adjusting physical resistance for athletic activities and fitness equipment are disclosed. An example system includes a user-wearable sensor to measure a first level of physical effort during a first athletic activity using fitness equipment and to generate sensor data indicative of the measured first level of physical effort. The example system also includes a controller to receive the sensor data to perform a comparison of the sensor data and data from second athletic activity indicative of a second level of physical effort, and automatically generate a control signal to adjust a setting of the fitness equipment based on the comparison.

An instrumented interface for quantifying at least one physiological parameter of the upper limbs of a person, capable of being secured to a gripping device, and including at least one gripping system which the person can hang from, the instrumented interface including at least one force sensor which measures a deformation of the interface when a person exerts a force on the interface via the one gripping device, and is capable of producing a value that translates a force value.

Physical fitness assessment systems and methods and wellness assessment systems and methods are disclosed. One physical fitness assessment system includes an exercise device and a host computer. The exercise device is configured to track movement of the exercise device by a user, determine a current physical activity data of the user based on, at least, the tracked movement, and transmit the current physical activity data of the user. The host computer is configured to receive from the exercise device the current physical activity data of the user, receive a physical fitness assessment selection to apply to the current physical activity date, compare the current physical activity data against benchmark physical activity data correlated with the exercise device, determine a physical fitness assessment of the user, generate the physical fitness assessment image based on the physical fitness assessment of the user, and present the physical fitness assessment image.

A system for providing resistance in an exercise machine. The system includes a motor, at least one loop drive attached to the motor. A carriage is coupled to the loop drive. The carriage moves in a first direction when the motor is turned in a first direction and a second direction when the motor is turned in a second direction. At least one sensor is attached to the carriage, wherein the at least one sensor is configured to detect external force on the carriage. Information from the sensor indicates external force on the carriage. The information is used to determine a movement of the carriage in response to the external force. The motor is instructed to turn the loop drive to apply the movement.

A system for providing resistance in an exercise machine. The system includes a motor, at least one drive screw attached to the motor. A carriage is coupled to the drive screw. The carriage moves in a first direction when the drive screw is turned in a first direction and a second direction when the drive screw is turned in a second direction. At least one sensor is attached to the carriage, wherein the at least one sensor is configured to detect external force on the carriage. Information from the sensor indicates external force on the carriage. The information is used to determine a movement of the carriage in response to the external force. The motor is instructed to turn the drive screw to apply the movement.

A method includes: supporting a normal operation mode, during which functionalities of a portable apparatus are available through an operating system of the apparatus, wherein the operating system includes a plurality of layers including a kernel and library functions layer; supporting a limited operation mode during which the apparatus is configured to execute a physical activity algorithm based on physical activity data corresponding to a physical activity session performed by a user of the apparatus, wherein the physical activity algorithm applies a direct low-level hardware access bypassing at least the layers above the kernel and the library functions-layer; and switching between the normal operation mode and the limited operation mode

An adaptive training system can determine a finite work capacity and critical power and use those determinations to generate an adaptive training programs for workout parameters. To determining a finite work capacity and critical power, the adaptive training system can receive workout data; generate data points by determining, for each workout, a maximum amount of work done for each of multiple time window sizes; fit these workout data points to a function; and determine a critical power and finite work capacity based on the fitted function. Once the adaptive training system has determined a critical power and finite work capacity, the adaptive training system can use them to generate an adaptive training program by keeping a function defined by a set of workout parameters below an ability function that is based on the critical power and finite work capacity.

A system for a treadmill including a tread that rotates around a front axle and a rear axle and side rails on opposing sides of the tread, comprises a brake configured to slow rotation of at least one of the front axle or the rear axle, a controller, and a first presence sensor in communication with the controller, the first presence sensor positioned on a side rail and configured to detect the user on the side rail. The brake is not engaged during operation of the treadmill when the tread is moving and the first presence sensor does not detect the user on the side rail. The controller is configured to, in response to the first presence sensor subsequently detecting the user on the side rail, engage the brake.

The invention relates to a measuring arrangement (1) for testing skis and snowboards (2) or sports equipment with a planar contact surface, the arrangement comprising a sensor device, onto which at least one ski or snowboard (2) or piece of sports equipment can be laid. The sensor device has a sensor surface (3) which is predominantly sub-divided in a longitudinal and transverse direction into a plurality of sensor-surface sections (4), each of said sensor-surface sections (4) having at least one force sensor which outputs the force acting on the sensor-surface section (4) as an electrical signal that is evaluated by a computer unit (5).

A lighting system is described for a treadmill, the treadmill including a tread that rotates around a front axle and a rear axle, wherein the tread comprises slats each having a tread surface and an underside. The lighting system includes a light positioned on at least one slat, wherein the light is configured to emit light between the adjacent slats and a controller in communication with the light and configured to control the light.