Relation among early maturation, body mass index and the longitudinal behavior of systolic blood pressure
Blanco-Cedres, L.; Macias-Tomei, C.; López-Blanco, M.
Acta Cientifica Venezolana 51(4): 252-256
2000
ISSN/ISBN: 0001-5504 PMID: 11460796 Document Number: 519838
In the Caracas Longitudinal Study, 53 girls- 8 to 11 years of age- who had been classified as early, average and late maturers were analyzed longitudinally with respect to Body Mass Index (BMI) and Systolic Blood Pressure (SBP). A longitudinal principal component analysis was used to summarize trends or intraindividual changes in BMI and SBP. A first component was identified for BMI, this component accounted for most of its total variance (94.65%). Girls were classified as normal in weight or at risk of overweight on the basis of this component. Three principal components were identified for SBP, that accounted for 91.83% of the total variance of this variable. The first component represented a measure of position across the whole age period, a "canalization pattern"; this component accounted for most of the total variance (45.65%). The second component revealed an unidirectional change in relative position of the values of the variable, a "decanalization pattern", and a third pattern summarized deviations around a position level: "recanalization pattern". Girls who showed a canalization pattern for SBP were those identified as early maturers and at risk of overweight.