Systems and methods for providing algorithmic equipment and/or accessory recommendations are disclosed herein. In one embodiment, a method providing an equipment or accessory recommendation to an athlete includes: monitoring a first amplitude of a first muscle of the athlete by a first wearable muscle response sensor carried by the athlete; monitoring a second amplitude of a second muscle of the athlete by a second wearable muscle response sensor carried by the athlete; determining a difference between the first amplitude and the second amplitude; comparing the difference to a predetermined amplitude threshold; and based on the comparing, providing an equipment or accessory recommendation to the athlete.

A method and apparatus for automated arm training includes at least one therapeutic device that includes a handle, a sensor assembly, and a display. The handle is configured to move along a path. The sensor assembly is configured to provide a measured time series made up of multiple handle location measurements at a corresponding multiple of measured time instances. The display is configured to present an image based on the measured time series. A robot motor can be configured to keep the handle moving near a tolerance of a target trajectory.

An orthopedic system configured for use in a pre-operative, intra-operative, and post-operative assessment. The orthopedic system comprises a first screw, a second screw, a first device, a second device, and a computer. The first device and the second device are respectively coupled to a first bone and a second bone of a musculoskeletal system. The first and second devices each include electronic circuitry, one or more sensors, and an IMU. A bracket, wrap, or sleeve can be used to hold the first and second devices to the musculoskeletal system. The first and second devices are configured to send measurement data to a computer. The first and second devices each have an antenna system. Electronic circuitry in the first or second devices are configured to harvest energy from a received radio frequency signal to recharge a battery to maintain operation.

An energy balancing system scales portion sizes of user-selected meal recipes to control a digital scale to prompt the user to measure scaled quantities of meal ingredients to prepare scaled meals. Physical activity tracking devices provide data to generate physical activity energy expenditures for energy burned by physical activity. The physical activity energy is added to a basal metabolic rate of energy expenditure that is a function of sex, weight, height, and age. The total energy expended are scaled down for a weight-loss goal to obtain the total recommended energy. A recipe portion-size optimizer adjusts scaling factors for each recipe so that the total recommended energy is met by the scaled meals. Amounts of nutrients for the recipes can also be scaled by the scaling factors to match recommended nutrient amounts when the meal recipe optimizer generates the scaling factors using an over-determined linear system optimizer.

Systems and methods for monitoring acute:chronic workload ratio (ACWR) are described. An indicator of workload is received from a device worn or carried by a user. An acute workload is determined for the user based on the received indicator of workload over a first period of time. A chronic workload is determined for the user based on the received indicator of workload over a second period of time, where the first period of time is shorter than the second period of time. A current ACWR is determined for the user based on the acute workload and the chronic workload.

A system for endurance testing including: at least one sensor configured to collect data associated with an individual's movement for an endurance test; an action module configured to determine endurance movements from the collected data and determine a set of test action; and an analysis module configured to analyze the set of test actions to provide a result for the endurance test. A method for endurance testing including: collecting data associated with an individual's movement, via at least one sensor; determining endurance movements from the collected data; determining a set of test action from the endurance movements; analyzing the set of test actions; and providing results associated with the endurance test based on the analyzed set of test actions.

An object is to provide a device for analyzing occlusion pressure with which it is possible to measure occlusion pressure with a high positional accuracy by using data obtained by versatile methods, including an operation device, wherein the operation device calculates a formula of a first dental arch based on an occlusion pressure data, calculates a formula of a second dental arch based on an occlusal contact positional data, calculates a transformation matrix that approximates the formula of the first dental arch to the formula of the second dental arch, carries out an operation to transform positional information included in the occlusion pressure data to a new positional information with the transformation matrix, and outputs an occlusion pressure data including the new positional information.

Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.

Aspects relate to a portable device that may be used to identify a critical intensity and an anaerobic work capacity of an individual. The device may utilize muscle oxygen sensor data, speed data, or power data. The device may utilize data from multiple exercise sessions, or may utilize data from a single exercise session. The device may additionally estimate a critical intensity from a previous race time input from a user.

The present invention is directed to a device for measuring muscular fatigue through obtaining a signal generated by repetitive motions of a human body. The present invention features a system for measuring movements of one or more muscles of a body of a user in order to track muscular fatigue. The system may comprise an object. The system may further comprise a motion sensor configured to measure signals in response to a stimulation and transmit said signal to a computing device. The stimulation may comprise an action carried out repetitively over an interval of time. The motion sensor is configured to measure a progressive reduction in a signal over the repetitive motions and disposed relative to the one or more muscles of the body of the user. The computing device may be capable of measuring muscular fatigue by measuring parameters of the received signals and generating a muscular fatigue signal.