Abstract: A system providing for personalized real-time instructions for physical fitness training. A data storage medium stores data comprising a set of instructions for physical fitness training on one or more tracks. A playback device reads the instructions stored on the data storage medium and converts them to an audio signal. An audio speaker connected to the playback device provides the audio signal, comprising the set of instructions, to a user located proximate the speaker.

Abstract: A caster structure for treadmill runner which has a runner frame comprised of a master frame, a framework, a running board, a front transverse lever, a hand holder and a floor-type rear prop. The caster assemblies fit in both ends of the transverse lever horizontally installed at the base of master frame and the front transverse lever with a pipe plug by press fitting. A plurality of anchoring holes are drilled in the pipe plug facing outwardly to allow insertion of the axle of the caster assembly. Thus, when the caster assembly is anchored to a lower anchoring hole, the caster contacts the floor surface and enables the treadmill runner be moved. When the caster assembly is anchored in an upper anchoring hole, the caster will not touch the floor surface enabling the treadmill to steadily remain on the floor surface enabling the treadmill to steadily remain on the floor surface without any slippery occurrence.

Abstract: A musical jump rope continuously plays a number of pre-programmed songs, and at the same time provides a display with multiple colored or white incandescent lights. At least one of the jump rope handles comprises: (1) a battery power source, (2) a pre-programmed electronic music chip, (3) a speaker driven by the music chip, (4) a plurality of incandescent lights; (5) at least one activator button for activating the music chip and the incandescent lights; (6) a dual timing circuit for driving the music chip and the incandescent lights for a fixed, pre-set period, and (7) a translucent handle covering. The handle covering may further include odorizing or colorizing means.

Abstract: A system and method for generating tornadoes and other vortex phenomen in an open air, free space enviroment is disclosed. The system includes a flat surface or deck suspended above the ground, a circular hole in the center of the deck, a means for creating an updraft through the hole in the deck and fans or other air moving means for creating a swirling air flow. Preferably, the fans for swirling the air are angled approximately 45 degrees relative to the vertical axis of the updraft flow through the center hole. For swirling the air at higher elevations, as well as at ground level, a multi level fan arrangement having the layers of fans spaced relative to the deck is used. Alternatively, a single level of fans are used in conjunction with louvers or vanes for deflecting the blown air into a fan shape. In another embodiment of the present invention, tangential flow is established by using a multiplicity of tubes for returning air flow from a plenum above an updraft fan.