Actigraph wristband data were automatically and continuously uploaded to and stored on a pass - word - protected server that could only be accessed by the researchers (see Figure 2). (dreampadsleep.com)
Participants were monitored using Actigraph, an electronic device (KesslerFoundation.org)
Sleep quantity and quality (sleep diaries and the Pittsburgh Sleep Quality Index) and nocturnal activity levels (actigraph monitors). (ebmh.bmj.com)