15 January 1999 Biofeedback control analysis using a synchronized system of two CCD video cameras and a force-plate sensor
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Abstract
The biofeedback control analysis of human movement has become increasingly important in rehabilitation, sports medicine and physical fitness. In this study, a synchronized system was developed for acquiring sequential data of a person's movement. The setup employs a video recorder system linked with two CCD video cameras and fore-plate sensor system, which are configured to stop and start simultaneously. The feedback control movement of postural stability was selected as a subject for analysis. The person's center of body gravity (COG) was calculated by measured 3-D coordinates of major joints using videometry with bundle adjustment and self-calibration. The raw serial data of COG and foot pressure by measured force plate sensor are difficult to analyze directly because of their complex fluctuations. Utilizing auto regressive modeling, the power spectrum and the impulse response of movement factors, enable analysis of their dynamic relations. This new biomedical engineering approach provides efficient information for medical evaluation of a person's stability.
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Masako Tsuruoka, Ryosuke Shibasaki, Shunji Murai, "Biofeedback control analysis using a synchronized system of two CCD video cameras and a force-plate sensor", Proc. SPIE 3570, Biomedical Sensors, Fibers, and Optical Delivery Systems, (15 January 1999); doi: 10.1117/12.336936; https://doi.org/10.1117/12.336936
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