A method and system for determining concentricity of a multiple layer golf ball are disclosed herein. One or more images of a golf ball are generated using an X-ray source, a camera or a digital detector, and an image intensifier. An edge detection algorithm is preferably utilized. The method also includes calculating Y,Z center coordinates of the a best fit diameter or ellipse of the inner edge layer and outer edge layer of the multiple layer golf ball.

A mechanical system for adhering various types of exercise equipment to a smooth floor surface, the system having lockable suction cups that are attached to a first planar portion of the exercise equipment to adhere the exercise equipment to the smooth floor surface when the exercise equipment is in an operational position. Additional lockable suction cups can be attached to a second planar portion of the exercise equipment to adhere the exercise equipment to the smooth floor surface when the exercise equipment is in a storage position. The lockable suction cups support at least a portion of the exercise equipment in the operational or storage positions.

A kit comprising at least 2 devices adapted to be easily attached by way of suction to one or more sides or a bottom of a swimming pool, each of the devices having a grab member adapted to be grabbed by a hand of a child player or an adult player, the devices adapted to be easily attached to a side or bottom of the pool. A game can be played with the devices after they are attached at separate points such that a player may grab a first device with one hand and then a second device with another hand, moving along said side or said bottom while remaining under water. The device comprises a housing having an upper grab member having a height, diameter, cross-section, shape, and surface configured to be grabbed by a hand of a child or an adult, an actuator member configured to move up and down within the upper grab member, a spring member within the upper grab member arranged and adapted to urge the actuator member in an upward direction, and a flexible disk shaped member adapted to engage a swimming pool side or bottom by suction. The device is waterproof and is designed to be engaged by suction by pressing a release button while the flexible disk shaped member is pressed against an underwater pool surface

A hybrid adhesion system includes an adhesion head including at least one suction cup and a handle and a vacuum generator mechanically coupled to the adhesion head. The vacuum generator includes at least one pneumatic cylinder having an internal volume in fluid communication with the at least one suction cup and a piston having a piston rod mechanically coupled to a manual actuator.

A FEPS (flexion extension pronation supination) device includes: a structural frame; a shaft mounted to rotate relative to the structure frame; and a brake that is structured to apply a selectively variable resistance against rotation of the shaft relative to the structural frame. A FEPS (flexion extension pronation supination) device includes: a structural frame; a shaft mounted to rotate relative to the structure frame; and a gripping member mounted to the structural frame and structured to adhere to an external support surface. A method includes operating the FEPS device by rotating the shaft.

A ball net structure arranged to be portable, collapsible, and able to be configured into different arrangements for different nets and/or different sports-related activities. The ball net structure comprising a base structure including at least one support portion, at least one base extension, and at least one base extension hinge, wherein the at least one support portion and the at least one base extension are coupled to the at least one base extension hinge. At least one rod is removably coupled to the base structure and received by a net, wherein the net is adapted to exert a force on the at least one rod causing the at least one rod to exert a force onto said base structure.

Systems, devices, and methods for an exercise mat that may include: a mat made of a cushioning material comprising a set of tick marks positioned along the longitudinal edges of the mat; and a set of horizontal lines defining a column of grids, and a set of numerical labels, where each numerical label is positioned near opposing ends of a corresponding horizontal line, and where the set of numerical labels do not indicate whole number measurements.

This invention encompasses a balance board/wobbling platform type of apparatus which uniquely enables integrative training in two distinct realms not normally combined—namely, directly integrating physical BALANCE with expressive MUSICALITY such that MUSIC itself can actually be created by the BALANCING adjustments of the user/s. In a direct sort of way, the user of the Giant Musical Wobble Board is actually enabled to create MUSIC by means of BALANCE. This unique empowerment is effected by means of toned bells (or other sounding devices) being affixed in an easily moveable manner (in the preferred embodiment) to the surface of a wobbling platform—which (in the preferred embodiment) is of a substantive size—so that the user through minute balancing adjustments can direct a rolling ball to contact/sound the toned bells. A “hook and loop” based attachment system is utilized (in the preferred embodiment) whereby the toned bells—and/or other props—can quickly and easily by removed and/or repositioned so as to enable a vast variety of changes and thus maximally interest the user and maximally challenge the user's balance and adaptability. Moreover, the way wherein this product uniquely makes it possible to integrate BALANCE and MUSIC with ACADEMIC INFORMATION, gives this particular balance board a surpassing degree of interest-generating power and INTEGRATIVE, INTERDISCIPLINARY breadth.

Methods for improving respiratory effectiveness including inhaling a breath and, while continuously holding the breath, swimming for a period of at least 10 seconds without exhaling or further inhaling, and inhaling a breath and, without exhaling or further inhaling, adopting, and holding for a period of at least 3 seconds, at least one stretch position, which requires constant muscular exertion to maintain.

An interactive boxing trainer having a boxing object and a trainer is provided. An accelerometer is installed in the boxing head of the boxing object so that the acceleration of the boxing head can be sensed, and the force applied onto the boxing head, including its strength and direction, can be calculated accordingly. With this architecture, the cost of installation and maintenance is also reduced.