title: Reference values for anaerobic performance and agility in ambulatory children and adolescents with cerebral palsy.
abstract: OBJECTIVE
  the aim of this study was to provide reference values of anaerobic performance and agility in a group of children and adolescents with spastic cerebral palsy (CP).
  
  
  METHODS
  a total of 300 children (184 males, 116 females) with spastic CP were recruited from 26 rehabilitation centres in six different countries. Of these, 215 were classified at GMFCS level I (mean age 11y 2mo, SD 3y, range 6-18y) and 85 were classified at GMFCS level II (mean age 11y; SD 3y 1mo, range 6-18y). The children performed the Muscle Power Sprint Test (MPST) and the 10×5m sprint test in a standardized manner. To establish reference values, reference curves were created using generalized additive models for location, scale, and shape.
  
  
  RESULTS
  height-related reference curves were created based on performance on the two tests.
  
  
  CONCLUSIONS
  this study provides height-related reference values for anaerobic performance and agility for children and adolescents with CP classified at GMFCS levels I and II. These curves are clinically relevant and provide a user-friendly method in the interpretation of anaerobic performance and agility for children with spastic CP.
authors.affiliation: Rehabilitation Center De Hoogstraat, Center of Excellence for Rehabilitation Medicine Utrecht, Netherlands. o.verschuren@dehoogstraat.nl
authors.forename: Olaf
authors.initials: O
authors.lastname: Verschuren
authors.forename: Manon
authors.initials: M
authors.lastname: Bloemen
authors.forename: Cas
authors.initials: C
authors.lastname: Kruitwagen
authors.forename: Tim
authors.initials: T
authors.lastname: Takken
mesh_terms: D000293:Adolescent; D015308:Anaerobic Threshold; D002547:Cerebral Palsy / Q000503:physiopathology* / Q000534:rehabilitation*; D002648:Child; D015986:Confounding Factors, Epidemiologic; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D053580:Muscle Strength; D010809:Physical Fitness; D012016:Reference Values; D012107:Research Design; D012720:Severity of Illness Index