A training system used in sports or other training that where a participant wears a device with a visual indicator such as a device emitting colored light and an optional signaling device like a vibrator or beeper. The device can be worn on the head, elbow, wrist, waist, knee, ankle or foot or be part of an participant's attire. The device can optionally be embedded in or on a shoe. A motion or position sensor can cause the visual indicator to change color or indication when the wearer is not moving correctly. Also, in some embodiments, a vibration can signal can be commanded by a coach or instructor to show that the player is not properly moving. An embedded processor can optionally set up various rhythm patterns used in practice. The device, wherever it is worn or disposed, can optionally be controlled remotely by a coach or instructor using a wireless transmission such as digital or analog radio or light to establish certain rhythms or to signal certain participants. The coach can send different signals to different devices worn by different participants. In a particular shoe embodiment, each of a pair of shoes can optionally communicate with the other member of the pair wirelessly so that a processor in one of the shoes can coordinate a rhythm pattern of vibration or beeping signals between the shoes.