Accelerometry in pre-schoolers


Physical activity in children is commonly measured via accelerometry. Recent reserach demonstrated that the compliance of wrist-worn accelerometers is superior compared to hip-worn devices. Thus, ACCIPS aims to calibrate and validate different types and placement of accelerometers in preschool children.
In total, 62 children of four kindergartens were recruited, from which 44 data sets are available for analysis. Mixed linear models were utilzed to calibrate and validate the accelerometers with respect to the energy expenditure while performing different tasks of physical activity. Cut-points and equations to calculate energy expenditure are now availble for other projects, such as JOKITA. The comparative validation proved higher validity for wrist-worn GENEActiv devices, compared to activPAL (thigh-worn) and Actigraph (hip-worn).
The current findings were presented at two international conferences. Two scientific papers are currently under review. Based on the existing data set, a computation of algorithms to automatically identifiying specific physical activity tasks (such as tricycling), is aimed for.

Funding period

Begin:   July 2016
End:   June 2017


  • BIPS funding (Institute's intramural fund)


PD Dr. rer. medic Mirko Brandes


  • Dr. Gregory Welk (Iowa State University)