Supplementary Table S1. Complete search strategies
Databases Search Strategy
Web of Science #1 TS=(soccer OR football OR "small-sided soccer" OR "small-sided football" OR "recreational soccer" OR "recreational football")
#2 TS=(overweight OR obesity OR obese OR BMI OR "body mass index")
#3 TS=(random* OR RCT OR "controlled trial")
#4 #1 AND #2 AND #3
PUBMED #1 ("Soccer"[Mesh] OR soccer[Title/Abstract] OR football[Title/Abstract] OR "small-sided soccer"[Title/Abstract] OR "small-sided football"[Title/Abstract] OR "recreational soccer"[Title/Abstract] OR "recreational football"[Title/Abstract])
#2 ("Overweight"[Mesh] OR overweight[Title/Abstract] OR "Obesity"[Mesh] OR obese[Title/Abstract] OR obesity[Title/Abstract] OR "Body Mass Index"[Mesh] OR "body mass index"[Title/Abstract] OR BMI[Title/Abstract])
#3 ("Randomized Controlled Trial"[Publication Type] OR "Randomized Controlled Trials as Topic"[Mesh] OR random*[Title/Abstract] OR RCT[Title/Abstract])
#4 #1 AND #2 AND #3
Scopus #1 TITLE-ABS-KEY (soccer OR football OR "small-sided soccer" OR "small-sided football" OR "recreational soccer" OR "recreational football")
#2 TITLE-ABS-KEY (overweight OR obesity OR obese OR BMI OR "body mass index")
#3 TITLE-ABS-KEY (random* OR RCT OR trial OR "controlled trial")
#4 #1 AND #2 AND #3
Embase #1 ('soccer'/exp OR soccer:ti,ab OR 'football'/exp OR football:ti,ab OR 'small-sided soccer':ti,ab OR 'small-sided football':ti,ab OR 'recreational soccer':ti,ab OR 'recreational football':ti,ab)
#2 ('overweight'/exp OR overweight:ti,ab OR 'obesity'/exp OR obese:ti,ab OR obesity:ti,ab OR 'body mass index':ti,ab OR BMI:ti,ab)
#3 ('randomized controlled trial'/exp OR random*:ti,ab OR RCT:ti,ab OR trial:ti,ab)
#4 #1 AND #2 AND #3
SPORTDiscus (via EBSCOhost) #1 XB (soccer OR football OR "small-sided soccer" OR "small-sided football" OR "recreational soccer" OR "recreational football")
#2 XB (overweight OR obesity OR obese OR BMI OR "body mass index")
#3 XB (random* OR RCT OR "controlled trial")
#4 #1 AND #2 AND #3
BMI, body mass index; RCT, randomized controlled trial; MeSH, Medical Subject Headings; XB, title or abstract field in EBSCOhost.