A tennis ball retriever for retrieving a tennis ball on and about a tennis court and for controllably releasing the ball includes a front-end ball collector having two spaced-apart blades defining a ball collection space. The retriever includes a means for gripping and securing a ball positioned at the fore end, and one or more detents for retaining the collected ball in the collection space until a programmed or manually-directed release toward a target location such as a tennis baseline. The retriever includes a processor-controller for controlling and directing the retriever during a retrieval session. The retriever may be remote-controlled such as by voice commands.

Provided herein in some embodiments is a resistance-training system including an upper-body garment having a first section of a single-layered construction and a second section of a multi-layered construction. The single-layered construction can include a first fabric layer. The multi-layered construction can include the first fabric layer, a second fabric layer, and a resistance-providing layer in-between the first fabric layer and the second fabric layer. The resistance-training system also includes a lower-body garment having the multi-layered construction, optionally with a different resistance-providing layer than the upper-body garment. The resistance-providing layer of the upper-body garment and the lower-body garment can be configured to provide resistance to one or more user movements for a user donning the resistance-training system.

Techniques for music selection based on exercise detection are disclosed. In one aspect, a method of operating a wearable device may involve determining, based on output of one or more biometric sensors, that a user of the wearable device has started an exercise and playing music for the user of the wearable device in response to determining the start of the exercise. For example, playing the music may involve turning on a music player based on the start of the exercise. In another example, the wearable device includes the music player.

A system includes a minimally intrusive display system (MIDS) configured to be disposed on an eyewear. The MIDS includes a display system and a sensor system configured to provide for a sensor data. The MIDS further includes a processor configured to process the sensor data to derive an activity metric. The processor is further configured to display, via the display system, the activity metric, wherein the display system is disposed in the eyewear so that the activity metric is only viewed when a user of the eyewear turns the user's pupil towards the display system at angle α from a forward direction.

During a first time period and for a first user, a second user is automatically selected based on competitive data of the first user and competitive data of the second user, and a workout selection is sent to cause a video of a workout to be displayed during a second time period on a smart mirror of the first user and a smart mirror of the second user. During the second time period, a live stream of the first user exercising is displayed at the smart mirror of the second user, and a live stream of the second user exercising is received and displayed at the smart mirror of the first user. During the second time period, a performance score of the first user and a performance score of the second user is displayed at the smart mirrors of the first user and the second user.

An apparatus, method, and system for measuring a golf club swing motion, especially a golf putting stroke, from the overhead view and enabling to provide in-situ athletic training and instruction along with analysis of the putting stroke by using augmented reality superimposed on the image of the actual golf club. The system comprises a portable apparatus, mobile device application interface, image processing algorithms and network servers. The portable apparatus includes a mini-camera and communication modules for capturing the video image of a putting stroke and transmitting the image via wireless, Wi-Fi, Hotspot, or Bluetooth to a designated electronic display device such as a tablet, mobile phone, or laptop. The portable apparatus is fixed to a fastening clip which fits easily onto a golf cap to provide the overhead view of the putting stroke and record the image from an actual golf course.

An exercise bar is provided. The exercise bar includes a handle tube with a longitudinal interior bore. The handle tube has a first end and a second end. A center shaft has an outer surface. The center shaft is fitted through the longitudinal interior bore exposing a first end portion of the center shaft at the first end of the handle tube and exposing a second end portion of the center shaft at the second end of the handle tube. A sensor is disposed on a mounting section of the outer surface of the center shaft between the first and second portion of the center shaft. A processor is disposed in an interior of the exercise bar. The sensor is in electronic communication with the processor in the exercise bar.

The present invention provides a device comprising a fastening ring configured to mechanically attach the device to a lacrosse stick, a display screen having a rectangular shape, the display screen attached to the front part, a first button positioned on one side of the display screen, a second button positioned on one side of the display screen and a third button positioned on one or more sides of the display screen.

Methods and systems are presented in which one or more heavy-duty straps are positioned in contact with a top and bottom of a door and engaged with a heavy mechanism exerting a static tension greater than 10 newtons. A user can exercise using removable extenders attached to any of several loops at various vertical positions, creating enormous leverage along the strap(s). Supplemental cushioning may be utilized to minimize damage from large kinetic energy imbued upon components of the methods and systems during or after exercise.

A face device for monitoring biomedical parameters of a user provides a support and housing structure shaped so as to be applied to the head of the user, an oximetry sensor fitted to the support and housing structure so as to adhere, in an operating position, to the face of the user at the facial artery, a sound source fitted to the support and housing structure so as to adhere, in an operating position, to a cranial bone of the user, an independently powered electronic board for processing data, received in the support and housing structure and connected to the oximetry sensor and to the sound source so as to detect and process signals coming from the oximetry sensor and to provide information on biomedical parameters to the user acoustically through the sound source. This face device does not engage or distract the user.