A triaxial accelerometer and portable data processing unit for the assessment of daily physical activity

C.V.C. Bouten, K.T.M. Koekkoek, M. Verduin, L. Kodde, J.D. Janssen

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Abstract

The present study describes the development of a triaxial accelerometer (TA) and a portable data processing unit for the assessment of daily physical activity. The TA is composed of three orthogonally mounted uniaxial piezoresistive accelerometers and can be used to register accelerations covering the amplitude and frequency ranges of human body acceleration. Interinstrument and test-retest experiments showed that the offset and the sensitivity of the TA were equal for each measurement direction and remained constant on two measurement days. Transverse sensitivity was significantly different for each measurement direction, but did not influence accelerometer output (
Original languageEnglish
Pages (from-to)136-147
Number of pages12
JournalIEEE Transactions on Biomedical Engineering
Volume44
Issue number3
DOIs
Publication statusPublished - 1997

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