A description of the procedures and equipment used to estimate physical activity using a wrist-worn accelerometer device.

This resource can be downloaded or viewed using the link: PhysicalActivityMonitor.pdf

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/docs/PhysicalActivityMonitor.pdf