Table 1.

Methodological quality of the included articles assessed by using the PEDro scale.

	Eligibility Criteria	Random Allocation	Concealed Allocation	Similar groups at Baseline	Subjects Blinding	Therapists Blinding	Assessors Blinding	Outcome Measures Obtained	Intention-to-Treat Analysis	Between-Group Statistical Comparisons	Point Measures and Measures of Variability	Total Score
Ahmadi et al., 2020 [13]	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes	Yes	No	6/10
Chinn et al., 1994 [19]	No	Yes	No	No	No	No	No	Yes	Yes	No	Yes	4/10
Johnson et al., 1999 [22]	Yes	Yes	No	Yes	No	No	Yes	No	No	No	Yes	4/10
Lundblad et al., 1999 [23]	Yes	Yes	No	Yes	No	No	No	No	No	Yes	Yes	4/10
Lundqvist et al., 2014 [14]	Yes	Yes	No	Yes	No	No	Yes	No	Yes	Yes	Yes	6/10
Nambi et al., 2014 [24]	Yes	Yes	No	Yes	No	No	No	No	No	Yes	Yes	4/10
Palmer, 2017 [18]	Yes	Yes	No	No	No	No	Yes	No	No	Yes	No	3/10
Paolucci et al., 2017 [15]	No	Yes	Yes	Yes	No	No	Yes	Yes	No	Yes	Yes	7/10
Quintero et al., 2009 [25]	No	Yes	No	No	No	No	Yes	No	No	Yes	Yes	4/10
Smith et al., 2001 [16]	Yes	Yes	Yes	Yes	No	No	No	Yes	No	Yes	Yes	6/10
Stephens et al., 2001 [26]	Yes	Yes	No	Yes	No	No	No	No	No	Yes	Yes	4/10
Teixeira-Machado et al., 2015 [27]	No	Yes	No	Yes	No	No	No	Yes	No	Yes	Yes	5/10
Teixeira-Machado et al., 2017 [28]	No	Yes	No	Yes	No	No	No	Yes	No	Yes	Yes	5/10
Torres-Unda et al., 2017 [21]	Yes	Yes	Yes	Yes	No	No	No	No	No	Yes	Yes	5/10
Ullmann et al., 2010 [20]	Yes	Yes	No	Yes	No	No	No	No	Yes	Yes	Yes	5/10
Vrantsidis et al., 2009 [17]	Yes	Yes	Yes	Yes	No	No	Yes	Yes	No	Yes	Yes	7/10