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Using the center of pressure movement analysis in evaluating spontaneous movements in infants: a comparative study
Halil Ibrahim Celik1, Ayse Yildiz2, Ramazan Yildiz2
1Bilge Çocuk Special Education and Rehabilitation Center, Beysukent, Çankaya, s06800, Ankara, Turkey. fizyoterapist70@gmail.com.
Insights
Quantitative assessment of infant spontaneous movement using center-of-pressure (COP) analysis shows promise. This objective method accurately detects absent fidgety movements (FMs) and aids in motor skill assessment for clinical screening.
Area of Science:
- Pediatrics
- Neurology
- Biomedical Engineering
Background:
- Automating spontaneous movement assessment requires quantitative, objective methods.
- Center-of-pressure (COP) movement analysis offers a novel approach for objective infant movement assessment.
Purpose of the Study:
- To present a quantitative assessment method for spontaneous infant movement utilizing COP analysis.
- To evaluate the efficacy of COP analysis in detecting absent fidgety movements (FMs) and assessing motor optimality.
Main Methods:
- 101 infants were assessed using simultaneous video recording and COP movement data collection for 3 minutes in a supine position.
- Global and detailed general movement assessment (GMA) were performed, with COP data analyzed for quantitative movement parameters.
Main Results:
- COP movement parameters showed a significant association with global GMA for absent FMs (83% overall accuracy).
- COP analysis also significantly correlated with detailed GMA (Motor Optimality Score-Revised/MOS-R), predicting total scores with high accuracy.
Conclusions:
- COP movement analysis can objectively detect absent FMs and MOS-R scores in clinical settings.
- This method may complement observational GMA and serve as a valuable tool for infant screening, especially where expert GMA is limited.
Background:
Researchers have attempted to automate the spontaneous movement assessment and have sought quantitative and objective methods over the past decade. The purpose of the study was to present a quantitative assessment method of spontaneous movement using center-of-pressure (COP) movement analysis.
Methods:
A total of 101 infants were included in the study. The infants were placed in the supine position on the force plate with the cranial-caudal orientation. In this position, the recording of video and COP movement data were made simultaneously for 3 min. Video recordings were used to observe global and detailed general movement assessment (GMA), and COP time series data were used to obtain quantitative movement parameters.
Results:
According to the global GMA, 13 infants displayed absent fidgety movements (FMs) and 88 infants displayed normal FMs. The binary logistic regression model indicated significant association between global GMA and COP movement parameters (chi-square = 20.817, p < 0.001). The sensitivity, specificity, and overall accuracy of this model were 85% (95% CI: 55-98), 83% (95% CI: 73-90), and 83% (95% CI: 74-90), respectively. The multiple linear regression model showed a significant association between detailed GMA (motor optimality score-revised/MOS-R) and COP movement parameters (F = 10.349, p < 0.001). The MOS-R total score was predicted with a standard error of approximately 1.8 points (6%).
Conclusions:
The present study demonstrated the possible avenues for using COP movement analysis to objectively detect the absent FMs and MOS-R total score in clinical settings. Although the method presented in this study requires further validation, it may complement observational GMA and be clinically useful for infant screening purposes, particularly in clinical settings where access to expertise in observational GMA is not available.
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