Document Type

Article

Publication Date

2-2011

Abstract

Infant sitting postural sway provides a window into motor development at an early age. The approximate entropy, a measure of randomness, in the postural sway was used to assess developmental delay, as occurs in cerebral palsy. Parameters used for the calculation of approximate entropy were investigated, and approximate entropy of postural sway in early sitting was found to be lower for infants with developmental delay in the anterior–posterior axis, but not in the medial–lateral axis. Spectral analysis showed higher frequency features in the postural sway of early sitting of infants with typical development, suggesting a faster control mechanism is active in infants with typical development as compared to infants with delayed development, perhaps activated by near-fall events.

Comments

NOTICE: this is the author’s version of a work that was accepted for publication in Infant Behavior and Development. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Infant Behavior and Development, Vol. 24, Issue 1 (February 2011) DOI: doi:10.1016/j.infbeh.2010.10.001.

Journal Title

Infant Behavior and Development

Volume

34

Issue

1

First Page

81

Last Page

99

Included in

Biomechanics Commons

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