A system for monitoring muscle load, is configured to perform operations including: obtaining, from at least one sensor, measurement data on an exerciser; determining, based on the measurement data, a number of repetitions of a macroscopic movement performed during a physical exercise; determining, based on a conversion entry corresponding to a type of the physical exercise, muscle load coefficient of one or more muscles loaded in the physical exercise; utilizing the muscle load coefficient of the one or more muscles and the number of repetitions in determining muscle load data indicating muscle specific muscle load caused by the physical exercise performed by the exerciser; and outputting the muscle load data.

A golf glove with marking areas provided on an outer surface of the hand and on an inner surface of the hand has three markings, wherein a first marking is provided on the outer surface of the hand in the metacarpal region, wherein a second marking is provided on the outer surface of the hand, and wherein a third marking is provided on the inner surface of the hand.

A system for data collection during a game includes a positioning system for determining various locations of a user during the game, a tag reader for reading a passive RFID tag held in close proximity to the tag reader, and a processor for correlating the location of the user with the time at which a tag is read to enable action locations for the game to be determined.

A variety of improvements to portable electronic devices are disclosed, particularly electronic devices designed for use in and around water. The improvements include a more secure interface jack, improved waterproofing techniques, improved battery stability, and improved device functionality. One or more of the disclosed improvements may be incorporated into a variety of portable electronic devices.

An athletic coaching method and jersey system are provided. The method utilizes jerseys with securing elements attached thereto. Number panels having specific player numbers are secured to the jerseys for use during practice. Scout team players wear the jerseys during practice. Each scout team player has a different number to represent the jersey number of a player on an opposing team in an upcoming game. The method allows coaches to more realistically simulate a game against an opposing team in practice. When the opposing team changes for the next game, each scout team player can continue to wear the same jersey but change the jersey number by switching number panels to represent a different player on the team of the next opponent. Thus, jersey numbers can be changed so that a game can be simulated for any opponent.

A system and method provides real-time coaching and adjustment to training. A wearable device may be configured for over-the-ear wear, which includes a speaker, a transceiver, and sensors to measure biometric activity in the user while worn during athletic performance training. The system uses a method which compares past performance to current performance and training goals to adjust a training plan during performance for maximizing training results. The system analyzes current and past performance and generates new training performance output goals in real-time based on the user's current performance. The system then transmits coaching output during a live training session instructing the user on how to adjust their performance output during a current training session. Some embodiments include connecting to smart gym apparatus which connect to the system and automatically increase/decrease resistance/speed depending on the system determining a need to change performance output for maximum gains.

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.

In a first aspect, a method for monitoring a golf swing is provided that includes coupling a mobile telephone to a golf club and employing the mobile telephone coupled to the golf club to monitor acceleration of the mobile telephone as the mobile telephone swings while a user swings the golf club, collect acceleration information based on the monitored acceleration of the mobile telephone as the mobile telephone swings, analyze the collected acceleration information to determine one or more characteristics of the golf swing based on the collected acceleration information, and output information regarding the one or more characteristics of the golf swing on the display of the mobile telephone. Numerous other aspects are provided.

A multifunctional fitness system may allow for high-resistance exercises through the distribution of weight upon a frame pivoting on the ground. In particular implementations, while a user lifts one end of the frame, the opposite end pivots. The weight of another person (and/or that of conventional weighted plates) can be placed on the frame in locations yielding the desired leverage and, thus, resistance felt by the lifter. The frame may have various axes upon which it can pivot and grip points, thus offering a broad range of exercises that can be conducted. Reorienting the frame to be resting on differing sides results in additional feasible exercises. Optional integrated electronics (typically in conjunction with existing smart devices) may use kinematics and/or structural flexing to calculate felt resistance and provide automated instruction to the various users. The may also collapse into a compact, rollable configuration for easy transport.

A torso protector device for martial arts is disclosed. The device comprises a cylindrical torso protection body to protect a wearer's torso; a shoulder cover coupled to the cylindrical torso protection body at front and rear portions thereof, wherein the shoulder cover has a neck opening defined in a top thereof, wherein left and right arm passing openings are defined in the shoulder cover in the left and right sides thereof respectively; a wire coupled to the cylindrical torso protection body and the shoulder cover; a wire adjuster module coupled to the wire; and a screener to screen the wire, wherein an adjustment dial is operatively coupled to the wire adjuster module, wherein the rotation of the adjustment dial results in length increase or decrease of the wire.