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Reliability and Validity of Data for 2 Newly Developed Shuttle Run Tests in Children With Cerebral Palsy

O Verschuren, BSc, is Pediatric Physical Therapist and Junior Researcher, Centre of Excellence, Rehabilitation Centre De Hoogstraat, Rembrandtkade 10, 3583 TM Utrecht, the Netherlands; Department of Pediatric Physical Therapy and Exercise Physiology, University Medical Center and Children’s Hospital, Utrecht, the Netherlands; and Partner of NetChild, Network for Childhood Disability Research, Utrecht, the Netherlands.
T Takken, PhD, is Clinical Exercise Physiologist, Department of Pediatric Physical Therapy and Exercise Physiology, University Medical Center and Children’s Hospital, and Partner of NetChild, Network for Childhood Disability Research
M Ketelaar, PhD, PhD, is Senior Researcher, Centre of Excellence, Rehabilitation Centre De Hoogstraat; Partner of NetChild, Network for Childhood Disability Research; and Department of Rehabilitation, University Medical Centre, Rudolf Magnus Institute of Neuroscience, Utrecht, the Netherlands
JW Gorter, MD, PhD, is a physician in pediatric rehabilitation medicine, Centre of Excellence, Rehabilitation Centre De Hoogstraat; Partner of NetChild, Network for Childhood Disability Research; and Department of Rehabilitation, University Medical Centre, Rudolf Magnus Institute of Neuroscience
PJM Helders, PT, PhD, PCS, is Professor, Department of Pediatric Physical Therapy and Exercise Physiology, University Medical Center and Children’s Hospital, and Partner of NetChild, Network for Childhood Disability Research

o.verschuren{at}dehoogstraat.nl. Address all correspondence to Mr Verschuren

Background and Purpose. The purpose of this study was to examine the reliability and validity of data obtained with 2 newly developed shuttle run tests (SRT-I and SRT-II) to measure aerobic power in children with cerebral palsy (CP) who were classified at level I or II on the Gross Motor Function Classification System (GMFCS). The SRT-I was developed for children at GMFCS level I, and the SRT-II was developed for children at GMFCS level II. Subjects. Twenty-five children and adolescents with CP (10 female, 15 male; mean age=11.9 years, SD=2.9), classified at GMFCS level I (n=14) or level II (n=11), participated in the study. Methods. To assess test-retest reliability of data for the 10-m shuttle run tests, the subjects performed the same test within 2 weeks. To examine validity, the shuttle run tests were compared with a GMFCS level–based treadmill test designed to measure peak oxygen uptake. Results. Statistical analyses revealed test-retest reliability for exercise time (number of levels completed) (intraclass correlation coefficients of .97 for the SRT-I and .99 for the SRT-II) and reliability for peak heart rate attained during the final level (intraclass correlation coefficients of .87 for the SRT-I and .94 for the SRT-II). High correlations were found for the relationship between data for both shuttle run tests and data for the treadmill test (r=.96 for both). Discussion and Conclusion. The results suggest that both 10-m shuttle run tests yield reliable and valid data. Moreover, the shuttle run tests have advantages over a treadmill test for children with CP who are able to walk and run (GMFCS level I or II). [Verschuren O, Takken T, Ketelaar M, et al. Reliability and validity of data for 2 newly developed shuttle run tests in children with cerebral palsy. Phys Ther. 2006;86:1107–1117.]

Key Words: Aerobic performance • Cerebral palsy • Exercise • Pediatrics • Physical fitness • Rehabilitation

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				O. Verschuren, M. Ketelaar, J. W. Gorter, P. J. M. Helders, C. S. P. M. Uiterwaal, and T. Takken Exercise Training Program in Children and Adolescents With Cerebral Palsy: A Randomized Controlled Trial Arch Pediatr Adolesc Med, November 1, 2007; 161(11): 1075 - 1081. [Abstract] [Full Text] [PDF]