Marjolijn Ketelaar


Dr. Marjolijn Ketelaar

  • developmental disorders
  • from research to care
+31 30-2561371
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Marjolijn Ketelaar, PhD is an Associate Professor at the Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht De Hoogstraat Rehabilitation.She has a background as Human Movement Scientist, and obtained her PhD degree in 1999 at the Faculty of Social Sciences at UtrechtUniversity.

She is the program leader of the Dutch research program PERRIN (, studying the development of activities and participation of children and youths with cerebral palsy from 0 to 24 years old. She is a partner of NetChild (, member of the board of the Dutch Academy of Childhood Disability Research (Dutch-ACD), and international collaborator of the Canadian research group of CanChild (, Center for Childhood Disability Research. She is member of the Editorial Board of the ‘Journal of Child Neurology’ and ‘Physical and Occupational Therapy in Pediatrics’.

Her research focuses on the development of children with neurological impairments, including the role of parents; clinimetrics in children; and the development and evaluation of rehabilitation interventions for children with neurologic impairments.

She has great interest in knowledge translation, how research findings can be used in clinical practice, including the development and use of clinical guidelines

Research line and group

Research line
Neurodevelopmental disorders
Number of PhD students
Number of postdocs

Personal fellowships and awards

  • KFA Price Innovation in Pediatric Rehabilitation (2010)
  • ZonMw grants (Main applicant), 2000, 2004, 2007, 2010
  • ISED Institute for the Study of Education and Human Development: Best scientific paper (1999)

Most recent key publications

  • Smits DW, Gorter JW, Hanna SE, Dallmeijer AJ, Van Eck M, Roebroeck ME, Vos RC, Ketelaar M; on behalf of the PERRIN Plus Study Group. Longitudinal development of gross motor function among Dutch children and young adults with cerebral palsy: an investigation of motor growth curves. Dev Med Child Neurol. 2013; 55(4): 378-384.
  • Verschuren O, Wiart L, Hermans D, Ketelaar M. Identification of Facilitators and Barriers to Physical Activity in Children and Adolescents with Cerebral Palsy. J Pediatr 2012 Sep;161(3):488-94
  • Verschuren O, Ada L, Maltais DB, Gorter JW, Scianni A, Ketelaar M. Muscle strengthening in children and adolescents with spastic cerebral palsy: considerations for future resistance training protocols. Phys Ther. 2011 Jul;91(7):1130-9.
  • Ketelaar M, Kruijsen AJA, Verschuren O, Jongmans MJ, Gorter JW, Verheijden J, Reinders-Messelink HA, Lindeman E. LEARN 2 MOVE 2-3: a randomized controlled trial on the efficacy of child-focused intervention and context-focused intervention in preschool children with cerebral palsy. BMC Pediatrics 2010;10:80.
  • Steenbeek D, Ketelaar M, Lindeman E, Galama K, Gorter JW. Interrater Reliability of Goal Attainment Scaling in Rehabilitation of Children With Cerebral Palsy. Archives of Physical Medicine and Rehabilitation 2010; 91: 429-435