“…Physical rehabilitation is acknowledged to be crucial ( Cosentino et al, 2020 ) and there are a number of approaches that have been applied to FOG in the research setting. These include action observation training ( Pelosin et al, 2010 , 2018 ; Agosta et al, 2017 ; Mezzarobba et al, 2020 ), treadmill training ( Hong and Earhart, 2008 ; Frazzitta et al, 2009 ; Lo et al, 2010 ; Barbe et al, 2013 ; Picelli et al, 2016 ; Baizabal-Carvallo et al, 2020 ; Bekkers et al, 2020 ; Seuthe et al, 2020 ), aquatic obstacle training ( Zhu et al, 2018 ), curved walking training ( Cheng et al, 2017 ), supervised slackline training ( Santos et al, 2017 ), as well as home based exercises ( Canning et al, 2015 ). In contrast, general exercises and standard physiotherapy do not seem to be effective for the treatment of FOG ( Miller et al, 2020 ).…”