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The short- and long-term postural effects on the forced expiratory tracheal noise time were studied in a sample of 12 subjects. In contrast to the spirometric parameters, the tracheal forced expiratory noise time does not respond to a short-term change in the body posture from sitting and standing positions to the lying position, as well as to 14-day-long orthostatic hypokinesia in a lying position...
Surrogate biomechanical, acoustic-biomechanical, and acoustic-anthropometric measures of bronchial resistance during forced expiration have been developed. The surrogate biomechanical measure has been found to provide a sufficiently precise estimate of bronchial resistance in the middle and at the end of the forced expiration maneuver in healthy subjects. The possibility of statistical prediction...
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