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November 10, 2025Scientific ReportsOpen Access

Movement smoothness at term-equivalent age is associated with motor developmental delay in preterm infants

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Authors

YLYae Lim LeeHSHyung-Ik ShinMBMoon Suk Bang

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Implication

Prospective cohort study shows associations between movement smoothness and motor development in preterm infants, indicating potential detection strategies.

Key Points

  • To quantify limb-movement smoothness in preterm infants and assess its association with motor developmental delay.
  • Prospective longitudinal cohort study
  • Video recordings of limb movements at term-equivalent age
  • Assessment using Bayley Scales at 9 months of corrected age
  • Quantification via log dimensionless jerk (LDJ) and spectral arc length (SPARC) measurements
  • 11 of 111 infants exhibited motor developmental delay (9.9%)
  • Significant differences in LDJ at multiple joints in infants with and without MDD
  • SPARC measurements also differed significantly between the two groups

Cite This Study

Lee et al. (2025) studied this question.

synapsesocial.com/papers/69253a1ec0ce034ddc356ecfhttps://doi.org/10.1038/s41598-025-23010-1
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Reduction in limb-movement complexity at term-equivalent age is associated with motor developmental delay in very-preterm or very-low-birth-weight infants2024 · 11 citations
  2. 2Evaluating upper limb movement smoothness metrics derived from markerless 3D motion tracking in children with neurological disorders2026
  3. 3Early Upper Limb Function in Infants Under Three Months: Associations with Shoulder Biomechanics and General Movement Patterns2025
  4. 4General movements and neurodevelopmental outcomes at 2 years of age in infants born very preterm2026
  5. 5Objective measurement of movement variability using wearable sensors predicts ASD outcomes in infants at high likelihood for ASD and ADHD2024 · 18 citations