A wearable device for determining balance of a user is provided, comprising a gyroscope, an inertial measurement device, a memory storing instructions, and a processor configured to execute the instructions to perform operations, comprising receiving angular velocity measurements over a period of time from the gyroscope, receiving deviations from the second axis over the period of time from the inertial measurement device, weighting the deviations from the second axis based on directions associated with the deviations, receiving deviations from the third axis over the period of time from the inertial measurement device, weighting the deviations from the third axis based on directions associated with the deviations, and based on the angular velocity measurements, the weighted deviations from the second axis, and the weighted deviations from the third axis, determining an index associated with a left side of the user and an index associated with a right side of the user.

The apparatus includes a light emitting pace rope positioned under water that shows where the swimmer should be to move at a selected pace. The LED rope includes a ribbon cable with ground, power and control wires. Equally space LEDs are attached to the ground and power wires along the cable. The cable and LEDs are received in a transparent plastic tube couplers are attached to the cable ends. The plastic tube is encased in transparent silicone. Ends of the LED rope are attached opposite pool end walls. A power supply is connected to a coupler. A micro-controller provided signals to the control wire which provides additional power to illuminate the LEDs one at a time at the selected pace. Additional LEDs are provided to continue the pace in the opposite direction.

The apparatus includes a light emitting pace rope positioned under water that shows where the swimmer should be to move at a selected pace. The LED rope includes a ribbon cable with ground, power and control wires. Equally space LEDs are attached to the ground and power wires along the cable. The cable and LEDs are received in a transparent plastic tube couplers are attached to the cable ends. The plastic tube is encased in transparent silicone. Ends of the LED rope are attached opposite pool end walls. A power supply is connected to a coupler. A micro-controller provided signals to the control wire which provides additional power to illuminate the LEDs one at a time at the selected pace. Additional LEDs are provided to continue the pace in the opposite direction.

A hanging assembly is disclosed for use with a flow generating device that produces a current in a pool. The hanging assembly includes a back supporting plate coupled to a side supporting plate where a plate angle is formed between the back supporting plate and the side supporting plate. The plate angle is adjustable such that a current angle of the current relative to a sidewall of the pool can be varied based on user preferences.

Present invention provides a Leaf-floating training method comprising following steps: Step 1: preparatory exercise (relaxing muscles); Step 2: dry-land rehearsals (learning the Leaf-floating posture); Step 3: getting familiar with water; Step 4: breathing at the swimming pool edge; Step 5: off-the-edge training; Step 6: finding balance between the upper and lower bodies with application of the Archimedes' Law of the Lever; Step 7: straightening knees and whole body; and Step 8: improving the Leaf-floating posture. A trainee should repeat the Steps 4 to 8 until they can stay afloat for more than 1 hour.

Present invention provides a Leaf-floating training method comprising following steps: Step 1: preparatory exercise (relaxing muscles); Step 2: dry-land rehearsals (learning the Leaf-floating posture); Step 3: getting familiar with water; Step 4: breathing at the swimming pool edge; Step 5: off-the-edge training; Step 6: finding balance between the upper and lower bodies with application of the Archimedes' Law of the Lever; Step 7: straightening knees and whole body; and Step 8: improving the Leaf-floating posture. A trainee should repeat the Steps 4 to 8 until they can stay afloat for more than 1 hour.

Wearable electronic devices that are designed to be worn on the head of a user while the user is swimming can determine swimming strokes and swimming performances of the user using motion sensors. Using a sound speaker, the wearable electronic device can play music and provide audio feedback to the swimmer. By comparing the swimming performance of the swimmer wearing the device with previously recorded swimming data, the wearable electronic device can provide audio comparison results to the swimmer while the swimmer is swimming in water. The wearable electronic device can also support similar functions for jumping actions.

Wearable electronic devices that are designed to be worn on the head of a user while the user is swimming can determine swimming strokes and swimming performances of the user using motion sensors. Using a sound speaker, the wearable electronic device can play music and provide audio feedback to the swimmer. By comparing the swimming performance of the swimmer wearing the device with previously recorded swimming data, the wearable electronic device can provide audio comparison results to the swimmer while the swimmer is swimming in water. The wearable electronic device can also support similar functions for jumping actions.

A swim paddle can include a low profile housing body including a hand surface and a water surface. The low profile housing body can further include a longitudinal axis that is parallel to the length of a hand of a swimmer and a transverse axis that is parallel to a width of the hand, wherein the longitudinal axis is longer than the transverse axis, and wherein the hand surface is adjacent to a palm of the hand. The paddle can further include a strap that can secure the low profile housing body with the hand of the swimmer. The swim paddle can further include an electronics package that can be affixed to the low profile housing body.

A swim paddle can include a low profile housing body including a hand surface and a water surface. The low profile housing body can further include a longitudinal axis that is parallel to the length of a hand of a swimmer and a transverse axis that is parallel to a width of the hand, wherein the longitudinal axis is longer than the transverse axis, and wherein the hand surface is adjacent to a palm of the hand. The paddle can further include a strap that can secure the low profile housing body with the hand of the swimmer. The swim paddle can further include an electronics package that can be affixed to the low profile housing body.