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Table of Contents Table of Contents ............................................................................................................................... 2 Credits ................................................................................................................................................ 4 Source ................................................................................................................................................ 5 Introduction ....................................................................................................................................... 6 The use of Actigraphy to measure sleep-‐wake patterns and physical activity in the follow up study of the INTERGROWTH-‐21st Project .................................................................................................... 7 Rationale for the Measurement of Sleep .......................................................................................... 7 Methodology ..................................................................................................................................... 8 Apparatus .......................................................................................................................................... 8 The MotionWatch ......................................................................................................................... 8 Connectivity and Battery .............................................................................................................. 9 Epochs & Recording times -‐ Activity & Light ............................................................................... 10 Experimental Protocol ..................................................................................................................... 11 Assessment Kit ............................................................................................................................ 11 Set up and Method of Assessment ............................................................................................. 11 Procedure on Return of the MotionWatch 8 ................................................................................... 14 Sleep-‐wake Cycle and Daytime Physical Activity Analysis ............................................................... 16 References ....................................................................................................................................... 19 3
