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WINGATE ANAEROBIC TEST IN DUTCH SCHOOL AGED CHILDREN WITH CEREBRAL PALSY ANNET J. DALLMEIJER, PHD1; VANESSA A. SCHOLTES, PHD1; LAURA M. JANSEN, MSC1; HESTER C. VOS, PT MSC1; ELS TEMPELAARS, PT2; LUCIANNE SPETH, MD4; MAARTJE HENSEN, PT3; MEREL A. BREHM, PHD1; JULES G. BECHER, MD PHD1 1. Rehabilitation Medicine, VU University Medical Center, Amsterdam, Netherlands; 2. Rehabilitation Center Heliomare, Wijk aan Zee, Netherlands; 3. The Mytyl en Tyltyl school and Rehabilitation Center Amsterdam, Amsterdam, Netherlands; 4. Rehabilitation Foundation Limburg, Valkenburg, Netherlands Background/Objectives: Anaerobic capacity is suggested to be a good indicator of functional ability, because most activities of daily life in children are characterized by short bursts of exercise. The Wingate anaerobic test can be used to measure anaerobic capacity in children with disabilities, but its reliability and relationship with functional outcome is not sufficiently described. The purpose of this study is to determine the reliability of a short version (20 s) of the Wingate anaerobic test, and to determine its relationship with functional outcome in children with cerebral palsy (CP). Design: Cross-sectional study. Participants and Setting: Sixty-two children with CP (gross motor function classification system [GMFCS] levels I [n=33], II [n=19], and III [n=10], age: 6-13 years) who were attending a school for physically disabled children. Materials/Methods: All children performed a 20 s full-out sprint test on a bicycle ergometer. Mean sprint power output over 20 s (P20), corrected for body mass, was calculated as a measure of anaerobic capacity. To investigate test-retest reliability, the test was repeated with a week time interval in a subgroup of 14 children. Functional outcome was assessed with the Gross Motor Function Measure (GMFM88), the 1-minute walking test (in m), the timed 10-m test (comfortable walking speed in m/s), and the timed stair test (in s). Results: Test-retest reliability of the 20 s Wingate test was excellent, showing an intra-class correlation coefficient of 0.95, and a standard error of measurement of 0.24 W/kg (mean P20: 3.25±1.67 W/kg at first, and 3.14±1.63 W/kg at second test). For the whole group, P20 decreased significantly with increasing motor involvement (GMFCS level I: 3.78±1.11 W/kg, II: 2.18±0.94 W/kg and III: 1.08±0.66 W/kg) and was significantly correlated to the GMFM88 (r=0.67, p<0.001, n=47), 1-min walking distance (r=0.72, p<0.001), comfortable walking speed (r=-0.48, p<0.01, n=48), and the timed stair test (r=-0.67, p<0.001). Conclusions/Significance: The 20 s Wingate test shows excellent reliability in children with CP. Anaerobic capacity depends on the level of motor involvement. Results confirm that anaerobic power is an important fitness component for daily life activities that should receive attention in training programs aimed at improving functioning. This should further be explored in controlled training studies. Acknowledgements: Support was provided by the Phelps Foundation, `Johanna Kinder Fonds', and `Kinderfonds Adriaan Stichting'.

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