Measurement of Human Daily Physical Activity

• DOI: 10.1038/oby.2003.7
• Publication Date: 2008-04-18T13:26:07Z
• Authors: Kuan Zhang; Patricia Werner; Ming Sun; F. Xavier Pi‐Sunyer; Carol N. Boozer
• Keywords: Stairs; Climbing; Activity monitor

Abstract Objectives: To validate a new device, Intelligent Device for Energy Expenditure and Activity (IDEEA), the measurement of duration, frequency, intensity various types human physical activity (PA). Research Methods Procedures: The ability IDEEA to identify quantify 32 PA, including most common daily exercise nonexercise was tested in 76 subjects: Subjects included males ( N = 33) females 43) ranging age from 13 72 years with mean body mass index (BMI) 24.7 kg/m 2 (range: 18.4 41.0) [43 females: old BMI ∼41.0 (mean ); 33 males: 15 ∼72 21.0 ∼38.4 25.9 )]. Postures, limb movements, jumping were using timed protocol specific activities. Walking running 60‐meter track, on which subjects walked ran at 6 self‐selected speeds. Stair climbing descending by timing who climbed descended flight stairs two different Results: Correct identification rates averaged 98.9% posture movement type 98.5% gait type. Pooled correlation between predicted actual speeds walking high r 0.986, p ≤ 0.0001). Discussion: accurately measured type, variety PAs.