Abstract: A system (10) and method for monitoring the operational life and/or performance of one or more light-emitting diodes (LEDs) (20) based on sensed parameters are disclosed. The remaining life of each LED may be predicted by counting the clock cycles during which the LED-based light is activated. LED current and/or temperature measurements may be used to control the clock signal and, thus, to compensate the predicted life value. Furthermore, operational characteristics of the LED-based light may be monitored based on LED current and/or voltage measurements. Such characteristics may include performance (e.g., intensity) and failure conditions (e.g., open or short circuits).

Abstract: A garment is provided for improving physical conditioning. The garment is formed with shorts having thigh encasing leg sections extending downwardly from a waist to surround and resiliently conform to the thighs of a wearer. A plurality of pouches are defined in each of the thigh encasing leg sections and are spaced laterally apart about the front, rear and outer thigh areas of the leg sections. A plurality of solid plastic encased lead weights are deployed and gripped within at least selected ones of the pouches. The leg sections are preferable secured about the legs of the wearer above the knees by adjustable belts located in hems at the lower extremities of the leg sections. The conforming nature of the garment and the way in which the weights are snugly gripped in the pockets ensures that the weights do not move relative to the wearer's skin, and do not bobble or shift as the wearer runs or engages in other physical conditioning activities.