Abstract
Objective
Children with developmental coordination disorder (DCD) are reported to have lower levels of strength and anaerobic capacity. The purpose of this study was to (1) identify field-based tests for strength and anaerobic capacity used in studies comparing children with DCD, and children who were typically developing (TD), (2) examine the methodologically quality of studies reporting psychometric properties and rate the psychometric properties of the examined test, and (3) summarize available evidence by combining the methodological quality of the studies and the quality of the psychometric properties of the test.
Methods
An electronic search was conducted in July 2019 in 4 electronic databases. For purpose 1, primary studies were included with no exclusion of study design in which children aged 4 to 18 years with DCD were compared to children who were TD on strength and/or anaerobic capacity measures. For purpose 2, primary studies were included with no exclusion of study design in which a psychometric property was investigated. The COnsensus-based Standards for selection of health Measurement INstruments (COSMIN) was used to evaluate methodological quality of the 34 studies and rate the psychometric properties of the used tests.
Results
Hand held dynamometer, bent knee push-up, vertical jump, standing long-jump, functional strength measurement, fitness test, and test battery can be recommended for TD, and the shuttle run item of the Bruininks-Oseretsky Test of Motor Proficiency-Second Edition (BOT-2) and 10 meter X 5 meter sprints (straight and slalom) for DCD.
Conclusion
Information regarding psychometric properties of field-based tests for strength and anaerobic capacity in children with DCD is lacking.
Impact Statement
Information about the psychometric properties of field-based tests for strength and anaerobic capacity in children with DCD is lacking. In TD children more information is available however also not complete. Especially information regarding validity and responsiveness is missing. When using measures in children with DCD it is important to keep this lack of evidence for the validity and reliability of the outcomes for this target group in mind.