An exercise device includes a use-sensor connected to a flywheel. The use-sensor detects motion of the flywheel. If the flywheel is moving, a power interrupt on a power supply connects power to the exercise device. If the flywheel is not moving, the power interrupt disconnects power from the exercise device, thereby improving device safety.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

A training system for developing tackle technique and tackle follow-up technique includes a combination on a field of a first padded tackling training apparatus for targeted training at a first level corresponding to a relatively low body height, a second padded tackling training apparatus for targeted training at a second level corresponding to a medial body height; and a third padded tackling training apparatus for targeted training at a third level corresponding a relatively high body height facilitates coaching of improved technique for tackling and follow-up technique in contact sports, particularly in American football. The system and apparatus enables technique at a targeted tackling height to be coached and has features to facilitate follow-up actions and thereby providing more effective and safe tackling at a range of targeted heights for use in game play.

A system includes a minimally intrusive display system (MIDS) configured to be disposed on an eyewear. The MIDS includes a battery system configured to provide power for the MIDS, a display system, and a processor communicatively coupled to the display system and configured to display information to an eye of a wearer of the eyewear via the display system. The display system is disposed inside a space bounded by a first vertical line that bisects the eyewear and a right line or a left line that extends no more than 40 mm from the first vertical line.

A method of using a computing device to forecast the result of a golf stroke and a portable handheld device for collecting and displaying golf round data are provided. The data collected for each stroke includes the location, time, and club used and the resulting ball position achieved” Before each drive or approach shot player skill level, course layout information, and player location on the course are used together with the club selected by the player to forecast the result of the next stroke. Putt break prediction information is provided before each putt. Information that a stroke has been taken and which dub was used can be entered manually or sensed automatically from telemetry equipped clubs.

A training apparatus for the simulation of rowing training includes a rolling seat to be moved linearly back and forth on a guide on a frame. Two handles which can be rotated independently of one another are mounted on an oarlock shaft. The oarlock shafts are connected to a drive mechanism in a force-flow connection. Upon introduction of force to the handles, power is output to a braking device via a drive mechanism, which has a freewheel between the oarlock shafts and the braking device. Upon actuation of the handles in a first direction about the axis of the respective rowlock shafts, power is transmitted to the braking device, and, upon actuation of the handles in the opposite direction the handles return without power being transmitted to the braking device.

A method for controlling a training machine is provided. Data of the force applied to a reciprocation means of the training machine by a user with the reciprocation means being locked as the reference force in the forward direction is obtained, and the forward load opposed to the force in the forward direction applied by the user and the backward load opposed to the force in the backward direction applied by the user are determined. Also, a load more than the reference force is applied to the reciprocation means as a backward load opposed to force in the backward direction applied by the user when the user applies force to the reciprocation means in the backward direction of the reciprocation means. As such, a relatively large load can be applied to the user when the user contracts or stretches the muscles to work out.

A method includes receiving electronic content via a network, the electronic content comprising an exercise class, and receiving user data associated with a user participating in the exercise class using an exercise machine. The method also includes generating an executable control for a user interface based at least in part on the user data, and providing the executable control, via a display of the exercise machine, while the user is participating in the exercise class. In such a method, the executable control is operable to modify a parameter of the exercise machine while the user is participating in the exercise class.

Improvements in a flywheel friction loading measurement system is disclosed. The measurement system includes combining a rotational system that alters friction on a flywheel combined with a variable resistor or potentiometer. The combination proves a measurable system that can determine the loading on a piece of exercise equipment. The potentiometer is calibrated to provide a repeatable and reliable measurement of the loading system that is placed on a flywheel. Detents can be included to provide finite loading positions. A calibration sequence can also be used to communicate the friction to a display and measurement system. The rotational system is with pulling a cable on a rotational axis or with wrapping a cable chain, belt or equivalent on or around a rotational axis.

A training device includes a force receiving component, a location detector, a resistance generator, and a controller. The force receiving component moves along a closed trajectory. The location detector is configured to detect a location of the force receiving component in the closed trajectory and to output a location signal. The resistance generator is configured to exert a resistance on the force receiving component. The controller controls the resistance generator to adjust the resistance based on the location signal.