title: Relationship of muscle function to auxology in preterm born children at the age of seven years.
abstract: OBJECTIVE
  To characterize the relationship between muscle function and auxology in preterm born children.
  
  
  METHODS
  Forty-five preterm born children (birth weight < or =1,500 g with mean +/- SD: 1,069 +/- 281 g; median of gestational age: 29 weeks; 50% multiple births) were analyzed for auxological parameters (weight, height) and muscle function at the age of 7 years. Maximal isometric grip force (MIGF) and ground reaction forces of goal-directed counter-movement jumping were measured using the Preston dynamometer and the Leonardo force plate. MIGF, peak jump force (PJF), peak jump power (PJP) and the maximal velocity of take-off (V(max)) were analyzed for their relationship to perinatal risk factors and actual auxological parameters.
  
  
  RESULTS
  With reference to age, weight-standard deviation score (SDS) and height-SDS were lower than in the reference population. With reference to height, MIGF-SDS and PJP-SDS were lower than in reference individuals. Children with intraventricular hemorrhage (IVH) had lower PJP-SDS and V(max) than children without IVH. PJP-SDS was lower than PJF-SDS in children with IVH.
  
  
  CONCLUSIONS
  Analyses showed a discrepancy between maximal force and power due to a decline of V(max) in children with IVH.
authors.affiliation: Children's Hospital, University of Cologne, Cologne, Germany. frickeo@uni-koeln.de
authors.forename: Oliver
authors.initials: O
authors.lastname: Fricke
authors.forename: Daniela
authors.initials: D
authors.lastname: Roedder
authors.forename: Angela
authors.initials: A
authors.lastname: Kribs
authors.forename: Baerbel
authors.initials: B
authors.lastname: Tutlewski
authors.forename: Juergen-Christoph
authors.initials: JC
authors.lastname: von Kleist-Retzow
authors.forename: Peter
authors.initials: P
authors.lastname: Herkenrath
authors.forename: Bernhard
authors.initials: B
authors.lastname: Roth
authors.forename: Eckhard
authors.initials: E
authors.lastname: Schoenau
mesh_terms: D001827:Body Height; D001835:Body Weight; D002543:Cerebral Hemorrhage; D002648:Child; D002657:Child Development / Q000502:physiology*; D005260:Female; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*