[Relation among early maturation, body mass index and the longitudinal behavior of systolic blood pressure].
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.
Blanco-Cedres
L
L
Universidad Central de Venezuela, Facultad de Medicina, Escuela de Medicina Luis Razetti, 2do piso, Departamento de Medicina Preventiva y Social, Cátedra de Salud Pública, Ciudad Universitaria, Caracas, Venezuela. blanco@cantv.ve
Macias-Tomei
C
C
López-Blanco
M
M
D001794:Blood Pressure / Q000502:physiology*; D001827:Body Height / Q000502:physiology*; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000517:prevention & control; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008137:Longitudinal Studies; D009765:Obesity / Q000517:prevention & control; D012307:Risk Factors; D013599:Systole; D013997:Time Factors