title: Establishing Normative Reference Values for Standing Broad Jump Among Hungarian Youth.
abstract: OBJECTIVE
  The purpose of this study was to examine age and sex trends in anaerobic power assessed by a standing broad jump and to determine norm-referenced values for youth in Hungary.
  
  
  METHODS
  A sample of 2,427 Hungarian youth (1,360 boys and 1,067 girls) completed the standing broad jump twice, and the highest distance score was recorded. Quantile regression was used to fit standing broad jump trends across linear and quadratic functions of age. Statistical significance was determined with bootstrap confidence intervals and the Wald test with p < .05. Age-by-sex specific centiles were generated and the 50th percentile was used to describe the overall patterns.
  
  
  RESULTS
  Standing broad jump scores increased steadily in boys from age 11 through 18 years with a discrete plateau at the end of adolescence. Girls' standing broad jump scores of those who performed above the median increased with age and plateaued later in the adolescence. Both linear and quadratic age terms were statistically significant predictors of standing broad jump trends across age (p < .05), but the relations varied depending on the percentile. The 50th percentile values resulted in 147.0 cm, 162.0 cm, 175.0 cm, 186.0 cm, 195.0 cm, 202.0 cm, 207.0 cm, and 210.0 cm for boys aged 11 to 18 years old, respectively, and 140.0 cm, 143.9 cm, 147.3 cm, 150.0 cm, 152.1 cm, 153.7 cm, 154.6 cm, and 155.0 cm for girls aged 11 to 18 years old, respectively.
  
  
  CONCLUSIONS
  This study provides normative reference charts that take into account age and sex differences in standing broad jump performance. The proposed reference values can be used to interpret standing broad jump scores in Hungarian youth.
authors.affiliation: a Iowa State University.
authors.forename: Pedro F
authors.initials: PF
authors.lastname: Saint-Maurice
authors.forename: Kelly R
authors.initials: KR
authors.lastname: Laurson
authors.forename: Mónika
authors.initials: M
authors.lastname: Kaj
authors.forename: Tamás
authors.initials: T
authors.lastname: Csányi
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005260:Female; D006801:Humans; D006814:Hungary; D035002:Lower Extremity / Q000502:physiology*; D008297:Male; D053580:Muscle Strength; D010809:Physical Fitness; D059385:Plyometric Exercise; D012016:Reference Values; D012574:Schools; D012737:Sex Factors
keywords: field assessment; lower body; muscle power; norm-referenced scores