Table 4.

Methodological quality scale scores

Study	Question number										Score
	1	2	3	4	5	6	7	8	9	10
Alves et al. (2010) [73]	2	2	2	2	2	2	2	2	0	2	18
Arcos et al. (2014) [118]	2	2	2	0	2	2	2	2	2	2	18
Asadi et al. (2018) [74]	2	2	2	2	2	2	2	2	2	2	20
Barr et al. (2015) [75]	2	2	2	2	2	2	2	2	2	2	20
Beato et al. (2018) [76]	2	2	2	0	2	2	2	2	2	2	18
Bianchi et al. (2019) [183]	2	2	2	0	2	2	2	2	2	2	18
Borges et al. (2016) [77]	2	2	2	0	2	2	2	2	0	2	16
Bouguezzi et al. (2018) [78]	2	2	2	0	2	2	2	2	2	2	18
Bremec (2018) [79]	2	2	2	2	2	2	2	2	2	2	20
Brito et al. (2014) [80]	2	2	2	2	2	2	2	2	2	2	20
Cavaco et al. (2014) [81]	2	2	2	2	2	2	2	2	0	0	16
Chelly et al. (2010) [82]	2	2	2	2	2	2	2	2	2	2	20
Christou et al. (2006) [83]	2	2	2	2	2	2	2	2	2	2	20
Comfort et al. (2012) [84]	2	0	2	0	2	2	2	2	0	2	14
Coratella et al. (2019) [85]	2	2	2	2	2	2	2	2	2	2	20
Corrêa et al. (2016) [184]	2	0	2	0	2	2	2	2	0	2	14
Coutts et al. (2004) [72]	2	2	2	0	2	2	2	2	0	2	16
Coutts et al. (2007) [71]	2	0	2	0	2	2	2	2	0	2	14
De Hoyo et al. (2015) [86]	2	0	2	2	2	2	2	2	0	2	16
De Hoyo et al. (2016) [87]	2	2	2	0	2	2	2	2	2	2	18
De Villarreal et al. (2015) [88]	2	2	2	2	2	2	2	2	2	2	20
Derakhti et al. (2018) [89]	2	2	2	2	2	2	2	2	2	2	20
Douglas et al. (2018) [40]	2	2	2	2	2	2	2	2	2	2	20
Enoksen et al. (2013) [90]	2	2	2	2	2	2	2	2	2	2	20
Faude et al. (2013) [91]	2	2	2	2	2	2	2	2	2	2	20
Franco-Márquez et al. (2015) [92]	2	2	2	2	2	2	2	2	2	2	20
Gabbett et al. (2008) [93]	2	0	2	0	2	2	2	2	1	2	15
Garci´a-Pinillos et al. (2014) [94]	2	2	2	2	2	2	2	2	0	2	18
Gil et al. (2018) [95]	2	2	2	0	2	2	2	2	2	2	18
González-Badillo et al. (2015) [96]	2	0	2	2	0	2	2	2	0	2	14
González-García et al. (2019) [97]	2	2	2	2	2	2	2	2	1	2	19
Gorostiaga et al. (2004) [98]	2	2	2	2	2	2	2	2	0	2	18
Griffiths et al. (2019) [99]	2	2	2	0	2	2	2	2	2	2	18
Hammami et al. (2016) 1 [101]	2	2	2	2	2	2	2	2	0	2	18
Hammami et al. (2016) 2 [102]	2	2	2	0	2	2	2	2	2	2	18
Hammami et al. (2018) [100]	2	2	2	2	2	2	2	2	2	2	20
Harries et al. (2017) [103]	2	2	2	2	2	2	2	2	2	2	20
Harris et al. (2008) [104]	2	2	2	0	2	0	2	2	0	2	14
Harrison and Bourke (2009) [105]	2	2	2	2	2	2	2	2	0	2	18
Haugen et al. (2014) [106]	2	2	2	2	2	2	2	2	0	2	18
Haugen et al. (2015) [66]	2	2	2	2	2	2	2	2	0	2	18
Helgerud et al. (2011) [185]	2	0	2	0	2	2	2	2	0	2	14
Impellizzeri et al. (2007) [107]	2	2	2	0	2	2	2	2	2	2	18
Ishøi et al. (2017) [108]	2	2	2	0	2	2	2	2	2	2	18
Kobal et al. (2017) 1 [109]	2	2	2	0	2	2	2	2	0	2	16
Kobal et al. (2017) 2 [110]	2	2	2	0	2	2	2	2	2	2	18
Koundourakis et al. (2014) [111]	2	0	1	2	2	2	2	2	0	2	15
Krommes et al. (2017) [112]	2	2	2	2	2	2	2	2	2	2	20
Lago-Fuentes et al. (2018) [113]	2	2	2	0	2	2	2	2	1	2	17
Lockie et al. (2012) 1 [115]	2	2	2	0	2	2	2	2	2	2	18
Lockie et al. (2012) 2 [114]	2	2	2	0	2	2	2	2	2	2	18
Lockie et al. (2014) [116]	2	2	2	0	2	2	2	2	2	2	18
Lopez-Segovia et al. (2010) [117]	2	2	2	2	2	2	2	2	2	2	20
Loturco et al. (2013) [119]	2	2	2	0	2	2	2	2	0	2	16
Loturco et al. (2015) 1 [120]	2	2	2	0	2	2	2	2	2	2	18
Loturco et al. (2015) 2 [121]	2	2	2	0	2	2	2	2	2	2	18
Loturco et al. (2015) 3 [122]	2	2	2	0	2	2	2	2	2	2	18
Loturco et al. (2016) 1 [123]	2	2	2	0	2	2	2	2	2	2	18
Loturco et al. (2016) 2 [41]	2	2	2	0	2	2	2	2	0	2	16
Loturco et al. (2017) [124]	2	2	2	0	2	2	2	2	0	2	16
Loturco et al. (2019) [186]	2	2	2	0	2	2	2	2	2	2	18
Manolopoulos et al. (2004) [125]	2	2	2	2	2	2	2	2	0	2	18
Manouras et al. (2016) [126]	2	2	2	2	2	2	2	2	0	2	18
Marques et al. (2019) [159]	2	2	2	2	2	2	2	2	2	2	20
Mathisen and Danielsen (2014) [127]	2	2	1	2	2	2	2	2	0	2	17
Mathisen and Pettersen (2015) [128]	2	2	1	2	2	2	2	2	0	2	17
McMaster et al. (2014) [129]	2	2	2	0	2	2	2	2	2	2	18
McMorrow et al. (2019) [130]	2	2	2	0	2	2	2	2	2	2	18
Mendiguchia et al. (2015) [131]	2	2	2	2	2	2	2	2	2	2	20
Meylan and Malatesta (2009) [132]	2	2	2	2	2	2	2	2	0	2	18
Michailidis et al. (2019) [133]	2	2	2	2	2	2	2	2	0	2	18
Morin et al. (2017) [134]	2	2	2	2	2	2	2	2	2	2	20
Mujika et al. (2009) [135]	2	2	2	0	2	2	2	2	0	2	16
Nakamura et al. (2012) [136]	2	0	2	2	2	2	2	2	2	2	18
Negra et al. (2016) [137]	2	2	2	2	2	2	2	2	0	2	18
Negra et al. (2019) [138]	2	2	2	0	2	2	2	2	2	2	18
Nonnato et al. (2020) [181]	2	2	2	2	2	2	2	2	2	2	20
Ozbar (2015) [139]	2	2	2	2	2	2	2	2	2	2	20
Ozbar et al. (2014) [140]	2	2	2	2	2	2	2	2	0	2	18
Pienaar and Coetzee (2013) [141]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2013) [142]	2	2	2	2	2	2	2	2	1	2	19
Ramirez-Campillo et al. (2014) 1 [143]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2014) 2 [144]	2	2	1	2	2	2	2	2	1	2	18
Ramirez-Campillo et al. (2015) 1 [146]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2015) 2 [145]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2016) [147]	2	2	2	2	2	2	2	2	0	2	18
Ramirez-Campillo et al. (2018) 1 [150]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2018) 2 [149]	2	2	2	2	2	2	2	2	2	2	20
Ramirez-Campillo et al. (2018) 3 [148]	2	2	2	2	2	2	2	2	1	2	19
Ramirez-Campillo et al. (2018) 4 [151]	2	2	2	2	2	2	2	2	1	2	19
Ramirez-Campillo et al. (2019) [152]	2	2	2	2	2	2	2	2	2	2	20
Randell et al. (2011) [153]	2	2	2	2	2	2	2	2	2	2	20
Rey et al. (2017) [154]	2	2	2	2	2	2	2	2	2	2	20
Rimmer and Sleivert (2000) [155]	2	2	2	2	2	2	2	2	0	2	18
Rodriguez-Rosell et al. (2016) [156]	2	2	2	2	2	2	2	2	2	2	20
Rodriguez-Rosell et al. (2017) 1 [157]	2	2	2	2	2	2	2	2	2	2	20
Rodriguez-Rosell et al. (2017) 2 [158]	2	2	2	2	2	2	2	2	2	2	20
Ronnestad et al. (2008) [160]	2	2	2	2	2	2	2	2	0	2	18
Ross et al. (2015) [182]	2	2	2	0	2	2	2	2	2	2	18
Sánchez-Sánchez et al. (2015) [161]	2	2	2	2	2	2	2	2	0	2	18
Scott et al. (2017) [162]	2	2	2	2	2	2	2	2	0	2	18
Seitz (2015) [164]	2	2	2	0	2	2	2	2	2	2	18
Shalfawi et al. (2012) [163]	2	2	2	2	2	2	2	2	2	2	20
Singh et al. (2014) [165]	2	0	2	2	2	0	2	2	0	0	12
Söhnlein et al. (2014) [166]	2	0	2	2	2	2	2	2	2	2	18
Spinks et al. (2007) [42]	2	2	2	2	2	2	2	2	0	2	18
Styles et al. (2016) [167]	2	0	2	0	2	2	2	2	2	2	16
Suarez-Arrones et al. (2019) [168]	2	2	2	2	2	2	2	2	2	2	20
Thomas et al. (2009) [169]	2	2	2	0	2	2	2	2	0	2	16
Tønnessen et al. (2011) [170]	2	2	2	2	2	2	2	2	2	2	20
Torres-Torrelo et al. (2017) [171]	2	2	2	2	2	2	2	2	2	2	20
Tous-Fajardo et al. (2016) [172]	2	0	2	2	2	2	2	2	0	2	16
Upton (2011) [173]	2	2	2	0	2	2	2	2	0	2	16
Venturelli et al. (2008) [177]	2	2	2	0	2	2	2	2	0	2	16
Vera-Assaoka et al. (2019) [174]	2	2	2	2	2	2	2	2	2	2	20
Weakley et al. (2019) [175]	2	2	2	2	2	2	2	2	2	2	20
West et al. (2013) [176]	2	2	2	0	2	2	2	2	0	2	16
Winwood et al. (2015) [64]	2	2	2	0	2	2	2	2	0	2	16
Wong et al. (2010) [178]	2	0	2	2	2	2	2	2	0	2	16
Yanci et al. (2016) [179]	2	2	2	0	2	2	2	2	2	2	18
Zghal et al. (2019) [180]	2	2	2	2	2	2	2	2	2	2	20

0 = clear no; 1 = maybe; and 2 = clearly yes