title: Test-retest reliability of the 20-sec Wingate test to assess anaerobic power in children with cerebral palsy.
abstract: OBJECTIVE
  The aim of this study was to determine the test-retest reliability of the 20-sec Wingate anaerobic test in children with cerebral palsy.
  
  
  METHODS
  Participants were 22 ambulant children with cerebral palsy, with Gross Motor Function Classification System levels I (limitations in advanced motor skills, n = 11), II (limitations in walking, n = 7), and III (walking with walking aids, n = 4), aged 7-13 yrs. All children performed two 20-sec full-out sprint tests on a bicycle ergometer within 1-3 wks. Mean power and peak power (W/kg) were calculated as an estimate of anaerobic power. Test-retest reliability was determined by calculating the intraclass correlation coefficient (ICC) and standard error of measurement (SEM). Values were shown for the total group and Gross Motor Function Classification System I and II/III separately.
  
  
  RESULTS
  The test-retest reliability of mean power output was excellent for children with Gross Motor Function Classification System level I (ICC, 0.96; SEM, 5.4%) and II/III (ICC, 0.99; SEM, 6.1%). Peak power output showed a lower reliability in both Gross Motor Function Classification System I (ICC, 0.87; SEM, 9.4%) and II/III (ICC, 0.96; SEM, 11.7%).
  
  
  CONCLUSIONS
  Anaerobic testing using a 20-sec Wingate bicycle test is reliable in ambulant school-aged children with cerebral palsy.
authors.affiliation: VU University Medical Center, Department of Rehabilitation Medicine and Research Institute MOVE, the Netherlands.
authors.forename: Annet J
authors.initials: AJ
authors.lastname: Dallmeijer
authors.forename: Vanessa A B
authors.initials: VA
authors.lastname: Scholtes
authors.forename: Merel-Anne
authors.initials: MA
authors.lastname: Brehm
authors.forename: Jules G
authors.initials: JG
authors.lastname: Becher
mesh_terms: D000293:Adolescent; D015308:Anaerobic Threshold / Q000502:physiology*; D002547:Cerebral Palsy / Q000175:diagnosis* / Q000534:rehabilitation*; D002648:Child; D015331:Cohort Studies; D004185:Disability Evaluation; D019988:Children with Disabilities; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010807:Physical Endurance / Q000502:physiology; D015203:Reproducibility of Results; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016138:Walking / Q000502:physiology