Assessment of posture and motion by multichannel piezoresistive accelerometer recordings
作者： JOCHEN FAHRENBERG , FRIEDRICH FOERSTER , MANFRED SMEJA , WOLFGANG MÜLLER
DOI: 10.1111/J.1469-8986.1997.TB01747.X
关键词: Psychology 、 Sitting 、 Body movement 、 Accelerometer 、 Piezoresistive effect 、 Slow motion 、 Trunk 、 Supine position 、 Acoustics 、 Alternating current
摘要: Modern assessment of posture and motion involves the use wide bandwidth piezoresistive accelerometers. The direct current (DC) component allows for slow change in position referring to gravitational axis: alternating (AC) component, calibrated g. represents acceleration along sensitive axis device. A method study was designed evaluate division DC AC components, reliabilities, discrimination between conditions, detection types physical activities. Recordings were made 26 student participants eight conditions: sitting, standing, lying supine, sitting typing on a PC keyboard, walking, climbing stairs, walking downstairs, cycling. This procedure repeated reversed order. classification activities according conditions (first trial) based four parameters, that is components trunk, thigh, lower leg correct almost 100% patterns, when applied second trial.
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