Date	Event	Description
31 May 2015	New citation required but conclusions have not changed	Four new studies have been included in this update. Methods updated and 'Summary of findings' tables have been included. There are new data for immersion in water and foot massage, although the conclusions remain largely the same.
31 May 2015	New search has been performed	Updated search identified four new studies (Adamczyk 2013; Coban 2010; Heller 2013; Irion 2011), of which two were included (Coban 2010; Irion 2011), one excluded (Adamczyk 2013), and one placed in ongoing studies (Heller 2013). Two trials (Katz 1990; Marhic 1991) previously excluded are now included in the update. A new review author helped to prepare this update (NA).