Background: For many patients clinical prescription of walking will be beneficial to health and accelerometers can be used to monitor their walking intensity, frequency and duration over many days. Walking intensity should include establishment of individual specific accelerometer count, walking speed and energy expenditure (VO2) relationships and this can be achieved using a walking protocol on a treadmill or overground. However, differences in gait mechanics during treadmill compared to overground walking may result in inaccurate estimations of free-living walking speed and VO2. The aims of this study were to compare the validity of track- and treadmill-based calibration methods for estimating free-living level walking speed and VO2 and to explain between-method differences in accuracy of estimation.
Institute for Health and Ageing
Open Access Journal Article
Barnett, A., Cerin, E., Vandelanotte, C., Matsumoto, A. & Jenkins, D. (2015). Validity of treadmill- and track-based individual calibration methods for estimating free-living walking speed and VO2 using the Actigraph accelerometer. BMC Sports Science, Medicine and Rehabilitation (online), 1-11. Retrieved from http://dx.doi.org/10.1186/s13102-015-0024-7