A Person-Centered Measurement System for Quantification of Physical Activity and Energy Expenditure at Workplaces

Authors:
Britta Weber;Ingo Hermanns;Rolf Ellegast;Jens Kleinert
Affiliations:
Institute for Occupational Health and Safety of the German Social Accident Insurance (BGIA), Dept. Ergonomics, Sankt Augustin, Germany 53754;Institute for Occupational Health and Safety of the German Social Accident Insurance (BGIA), Dept. Ergonomics, Sankt Augustin, Germany 53754;Institute for Occupational Health and Safety of the German Social Accident Insurance (BGIA), Dept. Ergonomics, Sankt Augustin, Germany 53754;Dept. Health Research, Institute of Psychology of the German Sport University Cologne, Köln, Germany 50933
Venue:
EHAWC '09 Proceedings of the International Conference on Ergonomics and Health Aspects of Work with Computers: Held as Part of HCI International 2009
Year:
2009

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Abstract

Accurate quantification of physical activity (PA) and energy expenditure (EE) is a basic prerequisite to evaluate activity promoting measures. A novel approach for determining EE by a person-centered measurement system which operates with motion sensors is presented. The new EE prediction model combines information on the type and intensity of PA as well as personal characteristics. For model calibration eight subjects performed standardized office and locomotion tasks while wearing the measurement system and an indirect calorimeter simultaneously. Via multiple regression analyses different EE prediction equations for sitting, standing, walking, climbing downstairs and climbing upstairs are developed. Model fit statistics revealed good results (adjusted R2 = 0.51 - 0.90). The developed model seems promising for precise EE prediction during the investigated activities.