“…With this aim in mind, other classical restrictions have been stated, such as to avoid sudden head movements, to wear a cervical collar and to avoid lying on the affected side ( Cakir et al., 2006 ). Several studies have been conducted to clarify this topic, most of them failing to show a benefit from postural restrictions ( Casqueiro et al., 2008 , De Stefano et al., 2011 , Devaiah and Andreoli, 2010 , Fyrmpas et al., 2009 , Ganança et al., 2005 , Marciano and Marcelli, 2002 , Moon et al., 2005 , Papacharalampous et al., 2012 , Roberts et al., 2005 ). In a Cochrane review ( Hunt et al., 2012 ), the conclusion is that there is a statistically significant effect of post-Epley postural restrictions in comparison to Epley manoeuvre alone (Semont manoeuvre was not evaluated in this study), but the improvement in treatment efficacy is very small.…”