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    New in the Literature: Supine Sleep Position and Infant Rolling Abilities (Early Hum Dev. 2012 Nov 21. [Epub ahead of print])

    The introduction of the supine sleep position to reduce the prevalence of Sudden Infant Death Syndrome has not altered the timing or sequence of infant rolling abilities, say authors of an article published online in Early Human Development. This information is valuable to health care providers involved in the surveillance of infants' development, they add. Original normative age estimates for these 2 motor abilities are still appropriate. 

    The aim of this study was to compare the order and age of emergence of rolling prone to supine and supine to prone before the introduction of back to sleep guidelines and 20 years after their introduction. The original normative data for the Alberta Infant Motor Scale (AIMS) were collected just prior to the introduction of back to sleep guidelines in 1992. Currently these norms are being reevaluated. Data of rolling patterns of infants 36 weeks of age or younger from the original sample (n=1,114) and the contemporary sample (n=351) were evaluated to compare the sequence of appearance of prone to supine and supine to prone rolls (proportion of infants passing each roll) and the ages of emergence (estimated age when 50% of infants passed each roll).

    According to the results, the sequence of emergence and estimated age of appearance of both rolling directions were similar between the 2 time periods.


    Comments

    Interesting as I have noticed the opposite. Babies seem to be developing their flexor muscles first because they are in more sitting devices and seem to roll from supine to prone. many are not tolerating the prone position as easily as they are not often placed in that position...
    Posted by kathy Yamamoto on 12/3/2012 4:21 PM
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