Cerebral Palsy ORIGINAL RESEARCH ARTICLE Test-Retest Reliability of the 20-sec Wingate Test to Assess Anaerobic Power in Children with Cerebral Palsy ABSTRACT Dallmeijer AJ, Scholtes VAB, Brehm M-A, Becher JG: Test-retest reliability of the 20-sec Wingate test to assess anaerobic power in children with cerebral palsy. Am J Phys Med Rehabil 2013;92:00Y00. 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. Design: 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 7Y13 yrs. All children performed two 20-sec full-out sprint tests on a bicycle ergometer within 1Y3 wks. Mean power and peak power (W/kg) were calculated as an estimate of anaerobic power. Test-retest reliability was determined by cal- culating the intraclass correlation coefficient (ICC) and standard error of mea- surement (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. Key Words: Physical Fitness, Rehabilitation, Disabled Children, Reproducibility of Results Authors: Annet J. Dallmeijer, PhD Vanessa A.B. Scholtes, PhD Merel-Anne Brehm, PhD Jules G. Becher, MD, PhD Affiliations: From the VU University Medical Center, Department of Rehabilitation Medicine and Research Institute MOVE (AJD, VABS, M-AB, JGB); and Academic Medical Center, Department of Rehabilitation, University of Amsterdam, Amsterdam, the Netherlands (M-AB). Correspondence: All correspondence and requests for reprints should be addressed to: Annet J. Dallmeijer, PhD, Department of Rehabilitation Medicine, VU University Medical Center Amsterdam, PO Box 7057, 1007 MB Amsterdam, the Netherlands. Disclosures: Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article. Presented, in part, at the American Academy of Cerebral Palsy and Developmental Medicine annual meeting in 2011. Vanessa A.B. Scholtes is currently working at Onze Lieve Vrouwe Gasthuis, Joint Research, Department of Orthopaedic Surgery, Amsterdam, the Netherlands. 0894-9115/13/9201-0000/0 American Journal of Physical Medicine & Rehabilitation Copyright * 2012 by Lippincott Williams & Wilkins DOI: 10.1097/PHM.0b013e318278a7ab www.ajpmr.com Assessing Anaerobic Power in Cerebral Palsy 1 Copyright © 2012 Lippincott Williams & Wilkins. Unauthorized reproduction of this article is prohibited.