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American Journal of Epidemiology Vol. 136, No. 7: 795-805
Copyright © 1992 by The Johns Hopkins University School of Hygiene and Public Health

ORIGINAL CONTRIBUTIONS

Blood Pressure Reactivity Does Not Correlate with Baseline Blood Pressure or Blood Pressure Change over Time in Preschool Children

Aryeh D. Stein1, Steven Shea1,2, Charles E. Basch3 and Patricia Zybert3

1 Division of Epidemiology, Columbia University School of Public Health New York, NY
2 Division of General Medicine, Department of Medicine, Columbia University College of Physicians and Surgeons New York, NY
3 Department of Health and Nutrition Education, Teachers College, Columbia University New York, NY

Reprint requests to Dr. Steven Shea, Atchley Pavilion 1310, 161 Fort Washington Avenue, New York, NY 10032

Received for publication August 23, 1991. Revision received May 17, 1992. Few studies have examined the relation of blood pressure reactivity to subsequent change in blood pressure of preschool children. The authors investigated relations between measurement-induced reactivity, exercise reactivity, and change in blood pressure over 16 months among 140 preschool children (46–67 months of age at baseline, 50.7% female, 92.9% Hispanic). Within-session measurement-induced reactivity was defined as the change in blood pressure between the first and the mean of the fourth and fifth readings obtained at each of 11 sessions. Between-session measurement-induced reactivity was defined as the change between mean blood pressure at session 1 and the mean of sessions 2 and 3. Both indices of measurement reactivity displayed poor reproducibility. Exercise reactivity was measured using a treadmill on two occasions and was moderately reproducible. There was no association between measurement and exercise reactivity. The change in systolic blood pressure over time was not associated with any measure of reactivity. The mean diastolic blood pressure did not change over the study period. Neither blood pressure reactivity to measurement nor blood pressure reactivity to exercise appeared to be a useful predictor of change in blood pressure in preschool children during a 16-month period.

blood pressure; child; preschool; Hispanic Americans


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