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Quantified Assessment of Infant's Gross Motor Abilities Using a Multisensor Wearable
Published on: May 17, 2024
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Using artificial intelligence-based technologies to detect clinically relevant changes of gross motor function in
Leonie Schafmeyer1,2, Heike Losch2, Christiane Bossier1,3
1University of Cologne, Medical Faculty and University Hospital, Center of Prevention and Rehabilitation, UniReha, Cologne, Germany.
Developmental Medicine and Child Neurology
|October 5, 2023
Summary
The reduced Gross Motor Function Measure (rGMFM-66) accurately detects changes in gross motor function for children with cerebral palsy (CP). This shorter version is a time-saving alternative to the full GMFM-66, suitable for clinical practice.
Area of Science:
- Pediatric Rehabilitation
- Movement Science
- Clinical Assessment Tools
Background:
- Cerebral palsy (CP) significantly impacts gross motor function in children.
- Accurate and efficient measurement of motor function is crucial for rehabilitation progress monitoring.
- The 66-item Gross Motor Function Measure (GMFM-66) is a standard tool, but its length can be a limitation.
Purpose of the Study:
- To compare the efficacy of the 66-item Gross Motor Function Measure (GMFM-66) with its reduced version (rGMFM-66).
- To assess the ability of both measures to detect clinically relevant changes in gross motor function in children with CP.
Main Methods:
- Retrospective analysis of 1352 GMFM-66 and rGMFM-66 measurements from children with CP undergoing rehabilitation.
- Measurements were taken at 5- to 7-month intervals.
- Individual effect size (iES) was calculated to quantify clinically relevant changes.
Main Results:
- A strong correlation (r=0.84) was found between iES calculated using GMFM-66 and rGMFM-66.
- The rGMFM-66 demonstrated excellent agreement in detecting clinically relevant gross motor improvement (AUC=0.90) and deterioration (AUC=0.95).
Conclusions:
- The reduced GMFM-66 (rGMFM-66) is a valid and reliable tool for assessing gross motor function changes in children with CP.
- The rGMFM-66 offers a time-efficient alternative to the full GMFM-66, making it practical for routine clinical use.

