A head guard is provided. The head guard includes one or more sensors as part of an sensory input and communications system. The head guard wirelessly communicates data to remote computing devices for intelligent data collection.

An athletic training system includes one or more panels having a rigid front surface covered by a translucent material behind which is an illumination or light source and one or more pressure sensors that can detect and measure the pressure caused by impact against the front surface. A control device communicates with and controls the panels according to a selected exercise regimen that is designed to develop particular skills for an athletic or sporting endeavor by commanding the panel or panels to illuminate or display information. While illuminated or displaying, each panel actively monitors its pressure sensor for an indication of an impact, and upon detecting an impact, reports the detection of the impact to the control device, and turns off its illumination. The process of turning panels on and off and detecting impact can be used to construct various regimens for training and developing skills.

A method for determining biomechanical parameters of the stride of a runner, using an accelerometer device on the wrist, on the upper arm, on the head or on the shoe, comprising the steps of measuring an initial sequence of acceleration data in at least the vertical direction using said accelerometer device; identifying in said initial sequence of acceleration data at least one frequency component caused by relative motion of the accelerometer device relative to the runner center of masse; attenuating said frequency component, so as to determine a modified sequence of acceleration data; determining said biomechanical parameters from said modified sequence of acceleration data.

In an aspect, an apparatus is provided and includes an air-tight object having an outer layer, an inner layer, and a cover, and a light module. The opacity of the outer layer is greater than the opacity of the inner layer. The outer layer defines a first aperture and a second aperture. The inner layer and the cover define a first interior region. The inner layer defines a second interior region. The light module is encapsulated within the first interior region and is configured to send light through the inner layer, through the second interior region of the air-tight object, and through the second aperture of the outer layer, wherein the cover is disposed between the light module and the outer layer.

A stimulus and sensor device can include a body comprising a resilient material, the body being configured to be struck by a bat, multiple light sources longitudinally spaced apart along the body, and multiple motion sensors longitudinally spaced apart along the body. A method of evaluating batting performance can include activating one of a series of light sources spaced apart along a body, and measuring motion of the body due to being struck after the activating step.

Embodiments provide physiological measurement systems, devices, and methods for continuous health and fitness monitoring. A wearable strap may detect reflected light from a user's skin, where data corresponding to the reflected light is used to automatically and continually determine physiological attributes of the user. In particular, the wearable strap may be used to monitor heart rate data including a resting heart rate, a heart rate variability, and sleep qualitye.g., to generate a recovery indicator that provides a quantitative assessment of a physical recovery state of the user indicating whether the user is recovered and ready for exercise.

A device includes a signaling means and a motion sensor, and logic for activating or controlling the signaling means in response to a sensed motion according to an embedded logic. The device may be used as a toy, and may be shaped like a play ball or as a handheld unit. It may be powered from a battery, either chargeable from an AC power source directly or contactless by using induction or by converting electrical energy from harvested kinetic energy. The embedded logic may activate or control the signaling means, predictably or randomly, in response to sensed acceleration magnitude or direction, such as sensing the crossing of a preset threshold or sensing the peak value. The visual means may be a numeric display for displaying a value associated with the count of the number of times the threshold has been exceeded or the peak magnitude of the acceleration sensed.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a virtual reality exercise game. One of the methods includes determining a head rotation of the user and a head lean of the user on an exercise device based on data from one or more sensors. The method includes presenting a virtual reality environment on a virtual reality headset, wherein the perspective of the user in the virtual world is determined by a vehicle that defines the velocity of the perspective, a body which defines a reference view point of the perspective (with the head looking forward), and a head which defines the view point of the perspective. The method also includes determining to apply rotation to the body in response to determining that a direction of the head rotation is in a direction of the lean.

An apparatus for an exercise task includes a pneumatic arrangement, which includes a pressure source, a pneumatic controller, pneumatic transfer channels, and at least one pneumatic resistor element, which includes a pneumatic cylinder with its piston. The apparatus additionally includes a mechanical lever arm structure or another mechanical connecting structure, which is for a user's limb contact and which is at a second end connected to the pneumatic resistor element. The apparatus additionally includes a sensor structure, a calculation arrangement and a display. The sensor structure is arranged to measure at least one measurement quantity of the exercise task and, based on the measurement, the calculation arrangement is arranged to form information on the display of the apparatus, regarding the power and/or force and/or range of motion of the exercise task. In the invention, regardless of the number of pneumatic resistor elements, the sensor structure includes one pressure sensor only, and to compensate for the small number of sensors, the calculation arrangement includes a correlation-taught calculation unit, which comprises a correlation algorithm taught with a larger number of sensors than the number of sensors in the apparatus, concerning the correlation between power and/or force and/or range of motion of the exercise task and the measured information.

The invention(s) described are configured to process sensor data in order to optimize or otherwise improve training of users for achievement of goals in relation to performing an activity. The invention(s) can also iteratively adapt training in a personalized manner, with assessment of training results and subsequent modification of training regimens, in order to provide improved alignment between users and their goals. Such iteration can drive interventions provided to users throughout the course of training, and allow the system to iteratively develop better and more precise interventions (e.g., through manual means, through machine learning models with generated training and test data). Such iteration, with large datasets applied to populations of users can also increase the breadth of user states that the can be addressed, with respect to provided interventions, and improve rates at which interventions are provided.