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Spontaneous movements in the supine position of preterm infants with intellectual disability

Masanori Kouwaki1, Mitsuko Yokochi2, Takeshi Kamiya3

  • 1Department of Neonatal Medical Center, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan.

Brain & Development
|September 24, 2013
PubMed

Insights

Preterm infants with intellectual disability (ID) show abnormal spontaneous movements at 2 months corrected age, with some movements appearing more or less frequently than in typical preterm infants. These differences suggest persistent immature movements and a lack of mature movement emergence in infants with ID.

Area of Science:

  • Developmental Pediatrics
  • Neuroscience
  • Movement Science

Background:

  • Preterm infants are at increased risk for developmental challenges, including intellectual disability (ID).
  • Spontaneous motor activity in early infancy provides insights into neurodevelopmental trajectories.
  • Assessing subtle motor elements can reveal early signs of atypical development.

Purpose of the Study:

  • To investigate spontaneous movements in preterm infants with intellectual disability (ID) at 2 months corrected age.
  • To differentiate between individual motor elements and whole-body movements.
  • To compare motor patterns in preterm infants with and without ID.

Main Methods:

  • Video analysis of spontaneous movements in 20 preterm infants with ID and 21 typically developing preterm infants.
  • Assessment at 2 months corrected age.
  • Comparison of the frequency of specific motor elements between groups.

Main Results:

  • Preterm infants with ID exhibited more frequent startle responses, lateral decumbent position, shoulder rotation, and hip adduction.
  • Less frequent movements in preterm infants with ID included hand sucking, shoulder abduction variations, elbow flexion variations, isolated hip adduction, hip abduction variations, and leg lifts.
  • Statistical significance was determined using Fisher's exact test (p<0.05).

Conclusions:

  • Abnormal spontaneous movements in preterm infants with ID at 2 months corrected age are characterized by persistent immature movements.
  • The findings indicate a failure in the emergence of mature motor patterns.
  • These motor differences highlight potential early markers for neurodevelopmental assessment in preterm infants with ID.
Abstract

Keywords:
General movementsIntellectual disabilityIsolated movementsPreterm infantsSpontaneous movements

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