This invention is a simple method to play a one-on-one underwater goal-scoring sport together with the pertinent field of play, the projectile and the goal apparatus. While underwater, one offensive player throws the projectile toward the underwater goal apparatus defended by a defending player who tries to tag out the offensive player before they can throw, or who tries to prevent the projectile from touching the goal area. Variations to the projectile and the goal apparatus are also described as options for use in the sport.

An anti-slip member for a wearable equipment or sports equipment, the anti-slip member includes an elastic body including an elastomer and a hydrogel, and at least part of the hydrogel dispersed on a surface of the elastic body.

A wearable positioning device includes an inertial sensor, a storage device and a processor. The inertial sensor senses an acceleration signal and an angular velocity signal. The storage device stores a previous positioning signal and a current coordinate. The processor is electrically connected to the inertial sensor and the storage device. A wearable positioning method is executed by the processor, which includes: determining whether the wearable positioning device is in one of an under-water mode and an above-water mode according to a pressure sensing signal; calculating, when in the under-water mode, a current acceleration and a current direction according to the acceleration signal, the angular velocity signal, and a swimming posture signal representing a swimming posture; and calculating a current positioning signal according to the current acceleration, the current direction and the previous positioning signal, and updating the current coordinate with the current positioning signal.

Embodiments herein are directed to an aquatic exercising assembly. The aquatic exercising assembly includes a container having a liquid retention portion. The liquid retention portion includes a bottom wall, a pair of opposing sidewalls, and a pair of opposing end walls, a pedal assembly and a paddle assembly. The pedal assembly is rotatably coupled to the one of the pair of opposing end walls. The paddle assembly is coupled to each one of the pair of opposing sidewalls. The paddle assembly is movable between a rearward position and a forward position in a longitudinal direction. The pedal assembly is rotatably moved by a lower body movement of a user and the paddle assembly is moved by an upper body movement of the user.

A treadmill includes a frame and a running belt coupled to the frame. The running belt is configured to rotate relative to the frame. The treadmill includes a controller coupled to the frame, and at least one sensor coupled to the controller. The at least one sensor is configured to collect information regarding a rotation of the running belt and a use of the treadmill by a user including a cadence, a ground contact time, and a stride length of the user of the treadmill. The treadmill further includes a display device coupled to the frame. The display device is configured to display the collected information regarding the rotation of the running belt, the cadence, the ground contact time, and the stride length of the user of the treadmill. At least one light source is configured to selectively emit a light regarding the treadmill.

Embodiments herein are directed to an aquatic exercising assembly. The aquatic exercising assembly includes a container having a liquid retention portion. The liquid retention portion includes a bottom wall, a pair of opposing sidewalls, and a pair of opposing end walls, a pedal assembly and a paddle assembly. The pedal assembly is rotatably coupled to the one of the pair of opposing end walls. The paddle assembly is coupled to each one of the pair of opposing sidewalls. The paddle assembly is movable between a rearward position and a forward position in a longitudinal direction. The pedal assembly is rotatably moved by a lower body movement of a user and the paddle assembly is moved by an upper body movement of the user.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

Aspects of the present disclosure involve hydraulic systems and methods for altering a flow of a body of water, such as a river, channel, and/or other flowing or uncontained bodies of water. In one aspect, a hydraulic system provides a velocity barrier for the impedance of aquatic organism migration. More particularly, the velocity barrier may be adapted based on the swimming capabilities of one or more aquatic organisms to impede migration. The aquatic organism may be one or more species of fish, such as species sea lamprey (Petromyzon marinus). The example implementations shown and described herein reference the restriction of the sea lamprey. However, it will be appreciated that other aquatic organisms could be restricted by the presently disclosed technology, for example, with different hydraulic targets depending on swimming capabilities.

To provide a golf ball that can prevent a decrease in carry distance of a driver shot when it rains and also, can exert excellent spinning performance upon an approach shot. The golf ball of the present invention includes a core, a cover that is provided on an outer side of the core and is provided with dimples, and an outermost layer that is formed on an outer side of the cover and made of a material having a contact angle of 90° or more. The golf ball has a dynamic friction coefficient of 0.52 or more. The material constituting the outermost layer comprises a urethane coating that contains a water repellent additive, and the water repellent additive includes a fluorinated surfactant, silicone-modified acrylate or hydrophobic silica. The urethane coating comprises a polyisocyanate as a curing agent, and the polyisocyanate includes both an adduct form and an isocyanurate form of hexamethylene diisocyanate, and a mixing ratio (isocyanurate form/adduct form) of the isocyanurate and adduct forms of the hexamethylene diisocyanate, expressed as a mass ratio, is from 95/5 to 40/60.

A swim training device includes: (a) a platform having a top side and a bottom side, and extending longitudinally from a leading edge to a trailing edge and extending laterally from a left side to a right side; and (b) a hands pocket located on the top side of the platform and including a hands entry opening facing toward the trailing edge of the platform, wherein: (i) the hands pocket is constructed to receive a user's hands through the hands entry opening so that the user's hands are located in the hands pocket in a generally extended configuration; (ii) the hands pocket is constructed to hold the user's hands in place in the generally extended configuration against the top side of the platform; and (iii) the hands pocket is constructed to resist longitudinal and lateral movement of the user's hands relative to the platform when the user's hands are located within the hands pocket.