Relationship between sleep characteristics, motor development, and sensory processing in late preterm infants

Area of Science:

• Neonatal development
• Pediatric sleep science
• Neurodevelopmental disorders

Background:

• Late preterm infants (born between 34 and 36 weeks gestation) represent a significant proportion of births and are at increased risk for developmental challenges.
• Sleep disturbances are common in preterm infants and may impact neurodevelopmental outcomes.
• Understanding the interplay between sleep, motor skills, and sensory processing is crucial for early identification and intervention.

Purpose of the Study:

• To examine the relationship between sleep characteristics and motor development in late preterm infants.
• To investigate the association between sleep patterns and sensory processing abilities in this population.
• To identify specific sleep parameters that may influence neurodevelopmental trajectories.

Main Methods:

• A cross-sectional study involving 81 late preterm infants aged 6-9 months corrected age.
• Sleep characteristics assessed using the Brief Infant Sleep Questionnaire.
• Motor development evaluated with the Peabody Developmental Motor Scales-2 (PDMS-2) and sensory processing skills with the Test of Sensory Functions in Infants (TSFI).
• Linear and multiple regression analyses were performed, adjusting for corrected age, gestational age, and birth weight.

Main Results:

• Nighttime sleep duration, number of night awakenings, sleep onset latency, and longest continuous sleep duration were significantly associated with both PDMS-2 and TSFI scores.
• Multivariate analyses indicated that nighttime sleep duration was associated with TSFI subtests and total score.
• Nighttime sleep duration and corrected age were associated with the PDMS-2 total score.

Conclusions:

• Sleep characteristics, particularly nighttime sleep duration, appear to be associated with motor development and sensory processing skills in late preterm infants.
• These findings highlight the potential importance of evaluating sleep in the context of neurodevelopmental assessments for this vulnerable population.
• Longitudinal studies are recommended to establish causality and inform potential intervention strategies.