Document Detail

Postural adjustments in preterm infants at 4 and 6 months post-term during voluntary reaching in supine position.
MedLine Citation:
PMID:  12904588     Owner:  NLM     Status:  MEDLINE    
Gradually it is getting clear that motor development - in particular balance control - in so-called "low-risk" preterm infants often differs from that in full-term infants. However, little is known on the etiology and pathophysiology of these problems. The aim of this study was to evaluate postural behavior during reaching by means of kinetic and kinematic measurements. Preterm infants (n = 32) without cerebral palsy were investigated longitudinally at the corrected ages of 4 and 6 mo. Thirteen age-matched full-term infants served as controls. Cognitive and motor development were assessed by means of the quality of General Movements (GMs) at 4 mo and Bayley scales at 6 and 12 mo. The infants were lying supine on a forceplate reaching for a toy and the kinetics of the total body's Center of Pressure (COP) was measured in cranial-caudal and medial-lateral direction. The analysis focused on COP displacement, Vmax and oscillatory changes of the COP displacement during reaching. The kinematic analysis of reaching focused on movement units, Vmax and a compound kinematic variable reflecting the quality of reaching. The results showed that preterm infants showed a remarkable "still" postural behavior, which differed significantly from the mobile COP behavior of the full-term infants. More "still" postural behavior at 6 mo was associated with a better quality of reaching movements and with normal GMs at 4 mo. We concluded that "still" postural behavior is an adequate postural strategy of preterm infants. But it might be that this postural behavior is an indicator of later dysfunction.
Bjorg Fallang; Ola Didrik Saugstad; Mijna Hadders-Algra
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2003-08-06
Journal Detail:
Title:  Pediatric research     Volume:  54     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-03     Completed Date:  2004-07-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  826-33     Citation Subset:  IM    
Oslo University College, Health Sciences, Physiotherapy Programme, Pilestredet 52, 0167 Oslo, Norway.
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MeSH Terms
Infant Behavior / physiology
Infant, Newborn
Infant, Premature / growth & development*,  physiology*
Motor Activity / physiology*
Posture / physiology*
Supine Position
Volition / physiology

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