Force plate calibration and setup for assessments of human balance

Abstract

Repeatable, quantitative evaluations of human balance rely on thorough characterizations of the devices and sensors used in measurements. Given the growing concern on this field, the research group has developed dedicated devices for the assessment of gait and balance, including a force plate. In this work, a calibration procedure for this force plate is devised and implemented, based on a calibration device which combines versatility, ease of use, and low-cost, and on reference weights. The procedure is detailed, and its results are shown, indicating a positive response for the device, and proving a superior fit compared to the theoretical estimation of its behavior. Based on this improved knowledge on the designed force plate, a dedicated signal-analysis tool is shown, incorporating calibration results and curves. Finally, examples of use of this tool are detailed, with standing balance registers from a control subject, indicating the resulting capabilities of the whole system as a promising tool for the assessment of human balance.