Differences of COP variability between full and pre term infants in the sitting position
Advisor Information
Nicholas Stergiou
Location
Milo Bail Student Center Omaha Room
Presentation Type
Oral Presentation
Start Date
8-3-2013 1:45 PM
End Date
8-3-2013 2:00 PM
Abstract
Our goal was to determine whether infants born full term, infants born preterm with developmental delays and infants born preterm and later diagnosed with cerebral palsy differed in their sitting postural control mechanisms. Thirty typical developing (TD) infants born at term, six infants born preterm, which were later diagnosed with cerebral palsy (CP) and five infants born preterm with developmental delays (DD) participated in this study. Each came to the lab for two sessions. The first session lasted for 45 minutes and was used to perform the Peabody Gross Motor Scale. In the experimental session three trials of sitting were recorded while infants were sitting on an AMTI force platform and postural sway measures were recorded. Amount of variability in the sway movement patterns was analyzed using the range for both the front-to-back and side-to-side and medial/lateral (ML) direction. Structure of variability in the sway movement patterns was analyzed using the largest Lyapunov Exponent (LyE) for both directions. Our analysis showed that TD, DD and CP infants differed in their sitting postural control mechanisms. DD infants had higher amount of variability when compared to TD and CP infants for both AP and ML directions. The structure of variability analysis differed significantly between the three groups. In the AP direction LyE had significantly higher values in TD infants than the DD and CP infants. These outcomes can assist in evaluating therapeutic interventions and in targeting different aspects of postural control for infants with CP or DD.
Differences of COP variability between full and pre term infants in the sitting position
Milo Bail Student Center Omaha Room
Our goal was to determine whether infants born full term, infants born preterm with developmental delays and infants born preterm and later diagnosed with cerebral palsy differed in their sitting postural control mechanisms. Thirty typical developing (TD) infants born at term, six infants born preterm, which were later diagnosed with cerebral palsy (CP) and five infants born preterm with developmental delays (DD) participated in this study. Each came to the lab for two sessions. The first session lasted for 45 minutes and was used to perform the Peabody Gross Motor Scale. In the experimental session three trials of sitting were recorded while infants were sitting on an AMTI force platform and postural sway measures were recorded. Amount of variability in the sway movement patterns was analyzed using the range for both the front-to-back and side-to-side and medial/lateral (ML) direction. Structure of variability in the sway movement patterns was analyzed using the largest Lyapunov Exponent (LyE) for both directions. Our analysis showed that TD, DD and CP infants differed in their sitting postural control mechanisms. DD infants had higher amount of variability when compared to TD and CP infants for both AP and ML directions. The structure of variability analysis differed significantly between the three groups. In the AP direction LyE had significantly higher values in TD infants than the DD and CP infants. These outcomes can assist in evaluating therapeutic interventions and in targeting different aspects of postural control for infants with CP or DD.