COpenhagen Neuroplastic TRaining Against Contractures in Toddlers (CONTRACT): protocol of an open-label randomised clinical trial with blinded assessment for prevention of contractures in infants with high risk of cerebral palsy

Maria Willerslev-Olsen, Jakob Lorentzen, Katrine Røhder, Anina Ritterband-Rosenbaum, Mikkel Justiniano, Andrea Guzzetta, Ane Vibeke Lando, Anne-Mette Bæk Jensen, Gorm Greisen, Sofie Ejlersen, Line Zacho Pedersen, Britta Andersen, Patricia Lipthay Behrend, Jens Bo Nielsen, Maria Willerslev-Olsen, Jakob Lorentzen, Katrine Røhder, Anina Ritterband-Rosenbaum, Mikkel Justiniano, Andrea Guzzetta, Ane Vibeke Lando, Anne-Mette Bæk Jensen, Gorm Greisen, Sofie Ejlersen, Line Zacho Pedersen, Britta Andersen, Patricia Lipthay Behrend, Jens Bo Nielsen

Abstract

Introduction: Contractures are frequent causes of reduced mobility in children with cerebral palsy (CP) already at the age of 2-3 years. Reduced muscle use and muscle growth have been suggested as key factors in the development of contractures, suggesting that effective early prevention may have to involve stimuli that can facilitate muscle growth before the age of 1 year. The present study protocol was developed to assess the effectiveness of an early multicomponent intervention, CONTRACT, involving family-oriented and supervised home-based training, diet and electrical muscle stimulation directed at facilitating muscle growth and thus reduce the risk of contractures in children at high risk of CP compared with standard care.

Methods and analysis: A two-group, parallel, open-label randomised clinical trial with blinded assessment (n=50) will be conducted. Infants diagnosed with CP or designated at high risk of CP based on abnormal neuroimaging or absent fidgety movement determined as part of General Movement Assessment, age 9-17 weeks corrected age (CA) will be recruited. A balanced 1:1 randomisation will be made by a computer. The intervention will last for 6 months aiming to support parents in providing daily individualised, goal-directed activities and primarily in lower legs that may stimulate their child to move more and increase muscle growth. Guidance and education of the parents regarding the nutritional benefits of docosahexaenic acid (DHA) and vitamin D for the developing brain and muscle growth will be provided. Infants will receive DHA drops as nutritional supplements and neuromuscular stimulation to facilitate muscle growth. The control group will receive standard care as offered by their local hospital or community. Outcome measures will be taken at 9, 12, 18, 24, 36 and 48 months CA. Primary and secondary outcome measure will be lower leg muscle volume and stiffness of the triceps surae musculotendinous unit together with infant motor profile, respectively.

Ethics and dissemination: Full approval from the local ethics committee, Danish Committee System on Health Research Ethics, Region H (H-19041562). Experimental procedures conform with the Declaration of Helsinki.

Trial registration number: NCT04250454.

Expected recruitment period: 1 January 2021-1 January 2025.

Keywords: clinical physiology; motor neuron disease; paediatric neurology.

Conflict of interest statement

Competing interests: None declared.

© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

Figures

Figure 1
Figure 1
Flow chart. CA, corrected age.

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