A new ambulatory monitoring instrument of posture and mobility related activities

Long-term ambulatory monitoring of posture and mobility related activities provides useful information about the extent of disability and the outcome of rehabilitation. The aim of this project is developing an instrument which could distinguish between a set of selected mobility-related physical activities and produce parameters characterising the subjects' activity pattern; The selected activities are lying, sitting, standing and walking. A novel activity transducer and a data logger with 1MB memory are employed in the system configuration. Analytical algorithms and program are developed. The subject's whole day activity pattern and the histogram of each activity event are successfully obtained.