“…All nine included studies were judged as low risk in the domains of random sequence generation and other sources of bias. A majority of the studies were low risk for selective outcome reporting (8 studies) ( Erickson et al, 2011 , Albinet et al, 2010 , Ruscheweyh et al, 2011 , Voss et al, 2013 , Chapman et al, 2013 , Antunes et al, 2015 , Antunes et al, 2015 , Albinet et al, 2016 ) and incomplete outcome data (6 studies) ( Erickson et al, 2011 , Albinet et al, 2010 , Ruscheweyh et al, 2011 , Chapman et al, 2013 , Antunes et al, 2015 , Antunes et al, 2015 , Vidoni et al, 2015 ). A majority of the studies were judged to have unclear risk of allocation concealment (7 studies) ( Erickson et al, 2011 , Albinet et al, 2010 , Ruscheweyh et al, 2011 , Voss et al, 2013 , Chapman et al, 2013 , Antunes et al, 2015 , Albinet et al, 2016 ) and blinding of outcome assessors (6 studies) ( Erickson et al, 2011 , Albinet et al, 2010 , Voss et al, 2013 , Chapman et al, 2013 , Antunes et al, 2015 , Albinet et al, 2016 ).…”