dr. J. (Janjaap) van der Net

dr. J. (Janjaap) van der Net

Associate Professor
dr. J. (Janjaap) van der Net
  • Activity&Health section exercise

Research Programs

Child Health



Dr Van der Net graduated from the Dutch institute for Higher Education at Utrecht with a BSc. in Physical Therapy in 1979. In 1984, Dr Van der Net was among the first students to enter the first comprehensive pediatric physical therapy course (3yrs) in the Netherlands (now MSc. pediatric physical therapy). In 1987 he  graduated as Pediatric Clinical Specialist (PCS) and became a registered Pediatric Clinical Specialist in the Netherlands. In 1983 he did an internship at the Hospital for Sick Children in Toronto, Canada, with a special focus on Musculoskeletal conditions and pediatric burns. In 1993 he started his PhD work on clinimetrics and functional outome in childhood rheumatic conditions, and in 1995 he received his  PhD. on the thesis: Functional Aspects in Childhood Rheumatic Conditions. In 2010, he succeeded Dr Paul Helders, as head of the Center for Child Development, Exercise and physical literacy at the University Children’s Hospital.  As from 2010 he tutors students of the second year MSc. in Clinical Health Sciences with their MSc-thesis towards their graduation since then. In 2014 he was assigned to associate professor in Pediatrics and in Clinical Health Sciences. In 2014 he received his Advanced Teaching Certificate at the Utrecht University. From 2014 -2019 he was director of the Child Health Services at the University Children's Hospital. Currently he still holds the position of head Center for Child Development, Exercise and physical literacy at the University Children’s Hospital. 


Side Activities

Currently he holds an international position as Co-Chair for the International Prophylaxis Study Group (the IPSG;; November 2014

As from 2019 he is member of the scientific committe of the Dutch association of pediatric physiotherapy.


Fellowship and Awards

Recipient of:

Nationale Reuma prijs 1998

Research Output (230)

Clotting factor activity levels and bleeding risk in people with haemophilia playing sports

Versloot Olav, Kemler Ellen, Blokzijl Johan, Timmer Merel, Schuuring Marleen, van Galen Karin P.M., Kremer Hovinga Idske Cornelia L., van der Valk Paul R., van Vulpen Lize F.D., Schutgens Roger E.G., van Koppenhagen Casper F., van der Net Janjaap, Fischer Kathelijn Jul 2023, In: Haemophilia. 29 , p. 1013-1023 11 p.

Can motor proficiency testing predict sports injuries and sports-induced bleeds in people with haemophilia?

Versloot Olav, Blokzijl Johan, Timmer Merel, Schuuring Marleen, van Galen Karin, Kremer Hovinga Idske, van der Valk Paul, van Vulpen Lize, Schutgens Roger, van Koppenhagen Casper, van der Net Janjaap, Fischer Kathelijn May 2023, In: Haemophilia. 29 , p. 864-873 10 p.

Identifying performance-based outcome measures of physical function in people with haemophilia (IPOP)

Bladen Melanie, Harbidge Hannah, Drechsler Wendy, Duport Gaetan, Mahaffey Ryan, van der Net Janjap, Pérez-Alenda Sofía, Sayers Fionnuala, Strike Karen, Timmer Merel, Stephensen David 2023, In: Haemophilia. 29 , p. 1611-1620 10 p.

Modeling gross motor developmental curves of extremely and very preterm infants using the AIMS home-video method

Suir I, Boonzaaijer M, Oudgenoeg-Paz O, Westers P, de Vries L S, van der Net J, Nuysink J, Jongmans M J 19 Nov 2022, In: Early Human Development. 175 , p. 1-10

Validation of the pedHALshort and HALshort in Dutch children and adults with haemophilia

Kuijlaars Isolde A R, van der Net Janjaap, van Vulpen Lize F D, Driessens Mariette H E, Schols Saskia E M, Tan Melanie, Gouw Samantha C, Fischer Kathelijn 29 Jul 2022, In: Haemophilia. 28 , p. 1007-1015 9 p.

Longitudinal Motor-Developmental Outcomes in Infants with a Critical Congenital Heart Defect

Sprong Maaike C A, van Brussel Marco, de Vries Linda S, van der Net Janjaap, Nijman Joppe, Breur Johannes M P J, Slieker Martijn G 16 Apr 2022, In: Children (Basel, Switzerland). 9 , p. 1-16

Bimanual performance in children with unilateral perinatal arterial ischaemic stroke or periventricular haemorrhagic infarction

Verhage Cornelia H., Groenendaal Floris, van der Net Janjaap, van Schooneveld Monique MJ, de Vries Linda S., van der Aa Niek E. Mar 2022, In: European Journal of Paediatric Neurology. 37 , p. 46-52 7 p.

Motor Developmental Delay After Cardiac Surgery in Children With a Critical Congenital Heart Defect:A Systematic Literature Review and Meta-analysis

Sprong Maaike C A, Broeders Willem, van der Net Janjaap, Breur Johannes M P J, de Vries Linda S, Slieker Martijn G, van Brussel Marco 1 Oct 2021, In: Pediatric physical therapy : the official publication of the Section on Pediatrics of the American Physical Therapy Association. 33 , p. 186-197 12 p.

Reducing fatigue in pediatric rheumatic conditions:a systematic review

Kant-Smits K., Van Brussel M., Nijhof S., Van der Net J. 8 Jul 2021, In: Pediatric Rheumatology. 19 , p. 1-9

Similar sports participation as the general population in Dutch persons with haemophilia; results from a nationwide study

Versloot Olav, van Balen Erna C, Hassan Shermarke, Schols Saskia E M, Leebeek Frank W G, Eikenboom Jeroen, Coppens Michiel, van Vulpen Lize F D, Smit Cees, Driessens Mariëtte H E, van der Net Janjaap, Gouw Samantha C, Fischer Kathelijn, 19 Jun 2021, In: Haemophilia. 27 , p. 876-885 10 p.

All research output

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