biostudies-literatureUnknown14Ortega FB<h4>Background</h4>Physical fitness in childhood and adolescence is associated with a variety of health outcomes and is a powerful marker of current and future health. However, inconsistencies in tests and protocols limit international monitoring and surveillance. The objective of the study was to seek international consensus on a proposed, evidence-informed, Youth Fitness International Test (YFIT) battery and protocols for health monitoring and surveillance in children and adolescents aged 6-18 years.<h4>Methods</h4>We conducted an international modified Delphi study to evaluate the level of agreement with a proposed, evidence-based, YFIT of core health-related fitness tests and protocols to be used worldwide in 6- to 18-year-olds. This proposal was based on previous European and North AmJournal of sport and health science101012https://www.ebi.ac.uk/biostudies/studies/S-EPMC11863322biostudies-literatureThe Youth Fitness International Test (YFIT) battery for monitoring and surveillance among children and adolescents: A modified Delphi consensus project with 169 experts from 50 countries and territories.PMC11863322Leskosek BTakken TZhang KSsenyonga RFraser BJBeghin LHuang WYLee EYTammelin TLubans DRPrince SATimmons BWBrazo-Sayavera JLovecchio NLeger LMisigoj-Durakovic MPopovic SRLopez-Gil JFRubin LJurak GEmeterio ICSMaestu EVanhelst JGithang'a JWWeston KLAgostinis-Sobrinho CAMaestu JReilly JJKidokoro TAlvarez-Bueno CTambalis KDBurn NJanz KWedderkopp NManyanga TKeller KCarson VCanete FSaid MAGerber MPeralta MJoensuu LBerglind DNqweniso SKriemler SNystrom CDMoliner-Urdiales DKatzmarzyk PDobosz JStarc GGribbon AMagnussen CGTomkinson GRMieziene BRamirez JVSanchez-Lopez MNiessner CCastro-Pinero JGiuriato Mda Silva DRPRidgers NDVicente-Rodriguez GPopovic BPintos-Toledo EServais JSecchi JDLabayen IBasterfield LEmeljanovas AJaakkola TBardid FSaint-Maurice PGranacher UGeorgiev GSantander MDTremblay MSOrtega FBLaurson KHenriksson PLiang LLGarcia-Hermoso AOlds TClarke JRuiz JRLakka TMagalhaes JPoon ETSoto-Sanchez JDe Roia GMcGrath RLenoir MStefan LAndrade SLubans DRiso EMMatelot DLang JJFraser BMedrano-Echeverria MSalaj STill KOcansey RTOyeyemi ALChen SCuenca-Garcia MSacheck JMJauregui-Ulloa EKagunda SNakabazzi BBrand CFerrari GCsanyi TSardinha LBSandercock GSun YMota JKaj MAguilar-Farias NKliegl RSantos LDDumuid DPellino VCGaya ARCigarroa IGontarev SSoric MMugisha LRamirez-Velez RJaunig JMello JBWong SHSaakslahti AEsteban-Cornejo IZou LThuany MPaw MCANoriega MJWachira LMVandoni MKuu SColella DWachira LJCadenas-Sanchez CMartinez-Vizcaino VOnywera VDelphi Fitness Expert GroupDrenowatz CMwase-Vuma TWHuhtiniemi MMarques ALiu YVeiga OLPate RRAnza-Ramirez CMorrison SACristi-Montero CSilva DASGomes TNQFColley RTabacchi GDlamini KBeltran-Valls MRSong YTladi DMYin XWelk GPate RTaylor JRLYMilanovic IGisladottir TStratton GRosa GHillman CHBlain DSmith JPihu MRodriguez-Rodriguez FLof MOnywera VOFairclough SJFaigenbaum ANaidoo RO'Keeffe BfalseThe Youth Fitness International Test (YFIT) battery for monitoring and surveillance among children and adolescents: A modified Delphi consensus project with 169 experts from 50 countries and territories.<h4>Background</h4>Physical fitness in childhood and adolescence is associated with a variety of health outcomes and is a powerful marker of current and future health. However, inconsistencies in tests and protocols limit international monitoring and surveillance. The objective of the study was to seek international consensus on a proposed, evidence-informed, Youth Fitness International Test (YFIT) battery and protocols for health monitoring and surveillance in children and adolescents aged 6-18 years.<h4>Methods</h4>We conducted an international modified Delphi study to evaluate the level of agreement with a proposed, evidence-based, YFIT of core health-related fitness tests and protocols to be used worldwide in 6- to 18-year-olds. This proposal was based on previous European and North Am2024-01-01T00:00:00Z2024 Nov2025-04-05T14:39:24.37Z2025-04-05T14:39:24.37ZS-EPMC118633223957749310.1016/j.jshs.2024.101012