A diving pool includes a first tiered section extending to a first depth of the diving pool, a second tiered section extending to a second depth of the diving pool that is deeper than the first depth, and a cover. The cover can be releasably positioned within the diving pool at a depth of the diving pool to isolate a shallower portion of the diving pool above the cover at the depth from a deeper portion of the diving pool below the cover at the depth.

A pool includes a main pool body defining an inner cavity, and a pillar within the inner cavity which cooperates with the main pool body to define an annular lane therebetween. The pillar provides the pool greater functionality that extends beyond the scope of the traditional pool, such as by enabling a separate pool, a platform, or other structures to coexist with the annular lane within the inner cavity. Further, a flow generating device may be provided to generate a circulating water flow within the pool that moves around the annular lane.

An apparatus and method for swim training are disclosed herein. In one embodiment, a cable is secure to a starting block or other fixed object at or near the edge of a pool, and the cable is then extended into the pool. The cable includes, along its length, fixed securement points to which multiple swimmers may be secured, via belts worn by the swimmers, to the cable. Because the swimmers are secured to fixed positions along the cable, multiple swimmers may swim in the same lane without interfering with each other. In another embodiment, the cable may be secured at both ends of the pool.

An apparatus and method for swim training are disclosed herein. In one embodiment, a cable is secure to a starting block or other fixed object at or near the edge of a pool, and the cable is then extended into the pool. The cable includes, along its length, fixed securement points to which multiple swimmers may be secured, via belts worn by the swimmers, to the cable. Because the swimmers are secured to fixed positions along the cable, multiple swimmers may swim in the same lane without interfering with each other. In another embodiment, the cable may be secured at both ends of the pool.

The objective of the invention is to provide a visual rhythmic guide device for swimming training capable of emitting rhythmical flashlights with a given frequency to lead the tempo of movements such as arm stroking and leg kicking for a swimmer. To achieve the objective, the device comprises a waterproof body to house components including a control circuit board, a timer, a gravity sensor (G-Sensor), a LED light source, a screen, a battery, a connection port and a set of input keys. When the device is given a frequency by a swimmer through the input keys, the LED light source will be driven to emit rhythmical flashlights in accordance with the given frequency. The swimmer is able to wear the device on anywhere of the body as long as the rhythmical flashlights can be sensed to adjust and practice the tempo of swimming movements.

The objective of the invention is to provide a visual rhythmic guide device for swimming training capable of emitting rhythmical flashlights with a given frequency to lead the tempo of movements such as arm stroking and leg kicking for a swimmer. To achieve the objective, the device comprises a waterproof body to house components including a control circuit board, a timer, a gravity sensor (G-Sensor), a LED light source, a screen, a battery, a connection port and a set of input keys. When the device is given a frequency by a swimmer through the input keys, the LED light source will be driven to emit rhythmical flashlights in accordance with the given frequency. The swimmer is able to wear the device on anywhere of the body as long as the rhythmical flashlights can be sensed to adjust and practice the tempo of swimming movements.

The present disclosure relates to systems and methods for balance index determination. For example, a wearable apparatus may have at least one gyroscope configured to measure angular velocity about a first axis; at least one inertial measurement device (IMU) configured to measure deviation along a second axis and a third axis; at least one memory storing instructions; and at least one processor configured to execute the instructions to: receive angular velocity measurements over a period of time from the at least one gyroscope; receive deviations from the second axis and from the third axis over the period of time from the at least one IMU; weight the deviations based on directions associated with the deviations; and generate a composite balance index based on the angular velocity measurements, the weighted deviations from the second axis, and the weighted deviations from the third axis.

In one aspect, a swim system may include a reverse thrust system worn by a swimmer proximate the frontal upper torso. The system provides a variable amount of reverse thrust such that the user can swim-in-place or make gradual forward progress. Importantly, this may enable a user to effectively extend a small residential pool to serve the same function as a twenty-five meter pool typically found at commercial or government facilities. The system also provides laminar current under the user while swimming, which solves the problems of leg drop, the need to out-kick the arm stroke, and turbulence and wave action around the head associated with conventional swim-in-place devices. Still further, in certain embodiments the system provides a relatively strong current in the region of the arm stroke moving away from the swimmer which provides enhanced resistance for proficient swimmers.

Various embodiments provide a stackable deformable electrical connector system including a plug body and a connector body each having at least one of studs and jacks with angled and/or misaligned axes. A deformation of one or more of a plug body, studs, jacks, and a connector body or another stackable connector is created when plugging together the angled studs and jacks. The deformation creates resultant forces between the studs and jacks for electrical contact. The connectors may integrate deformable bars in the connector body, locking features and features to ensure polarity. The studs and jacks may be solid metal corrosive-resistant parts, such as titanium, Hastelloy, or Inconel.

The present invention is a shipping container water displacement activated wave generating device for use in a body of water. The wave generating device preferably has displacement forming characteristics that help to create laminar waves which then transverse a slope or artificial surfing reef to create waves which surfing maneuvers can be performed. The water displacement device is a wave container, which is oscillated up and down by mechanical means and the container displaces water to form a swell toward the slope or reefs and creates a wave for surfing.