Low birth weight is associated with elevated systolic blood pressure in adolescence: a prospective study of a birth cohort of 149378 Swedish boys.

This study was intended to clarify the relation between fasting insulin, lipids, and blood pressure in adolescents before the onset of hypertension and to examine the association of these data with similar data obtained in their parents. The participants in this study were 183 adolescents 14 to 18 years old (96 girls) completing a 4-year intervention trial and their parents (164 mothers, 122 fathers). Blood pressure was measured twice on the right arm in a seated position using a random-zero sphygmomanometer. Fasting blood samples were obtained for lipid and insulin analyses. Fasting insulin was significantly correlated with systolic blood pressure in the adolescents and also in the parents before and after adjustment for body mass index. Fasting insulin was correlated significantly with levels of cholesterol, triglycerides, and HDL and LDL cholesterol in the adolescents. It was correlated only with triglycerides and HDL-cholesterol in mothers and fathers. After adjustment for body mass index, the correlations between fasting insulin and lipids in the children were not significant. A significant relation was shown between children's systolic blood pressure and mothers' fasting insulin and systolic blood pressure. Significant correlations were found between the children's and fathers' triglycerides and HDL-cholesterol, whereas significant correlations were found for fasting insulin and all lipids between mothers and children, and these remained significant after adjustment for body mass index. These results show (1) a significant relation between fasting insulin and both lipids and systolic blood pressure in adolescents and (2) a significant relation for these factors between adolescents and their parents. Although weight appears to play an important role in this relation during adolescence, genetic and environmental factors other than those mediated via weight may control insulin metabolism within families. The data support a role for studies during early biological development to address these issues.

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This study investigates sexual maturity as a predictor of resting blood pressures independent of other known predictors, in 179 boys and 204 girls 11-16 years of age from the Heartfelt Study. The sample included youth of African (n = 140), Mexican (n = 117), and European and "other" (n = 126) backgrounds. Sexual maturity was assessed during clinical examination of three standard indicators for each sex. Systolic and diastolic blood pressures were higher in children of maturity stages IV and V, compared to stages I-III, in each gender/ethnic group (P < 0.01 in almost all groups). Boys and girls advanced in sexual maturity for their age group, had significantly higher systolic blood pressures (but not diastolic) than the less advanced in linear models that included height, body mass index (BMI), ethnicity, and age as co-predictors. Diastolic blood pressures were predicted by height in boys and by age and the BMI in girls. This analysis, using a very conservative approach, suggests that sexual maturity provides important and independent information on systolic blood pressure in adolescents. Further investigation of its role in 24-hr blood pressures and in blood pressures taken during physical and emotional stress, is recommended.

This study investigates sexual maturity as a predictor of resting blood pressures independent of other known predictors, in 179 boys and 204 girls 11-16 years of age from the Heartfelt Study. The sample included youth of African (n = 140), Mexican (n = 117), and European and “other” (n = 126) backgrounds. Sexual maturity was assessed during clinical examination of three standard indicators for each sex. Systolic and diastolic blood pressures were higher in children of maturity stages IV and V, compared to stages I–III, in each gender/ethnic group (P < 0.01 in almost all groups). Boys and girls advanced in sexual maturity for their age group, had significantly higher systolic blood pressures (but not diastolic) than the less advanced in linear models that included height, body mass index (BMI), ethnicity, and age as co-predictors. Diastolic blood pressures were predicted by height in boys and by age and the BMI in girls. This analysis, using a very conservative approach, suggests that sexual maturity provides important and independent information on systolic blood pressure in adolescents. Further investigation of its role in 24-hr blood pressures and in blood pressures taken during physical and emotional stress, is recommended. Am. J. Hum. Biol. 13:227–234, 2001. © 2001 Wiley-Liss, Inc.

To examine whether birth weight is related to systolic blood pressure during adolescence. Retrospective (comparative) cohort study. The observers who traced and studied the subjects were unaware of their case-control status. 330 subjects were born in Cardiff in 1975-7. Cases who were low birth weight at term (< 2500 g) were matched with controls of normal birth weight (3000-3800 g) at term. Systolic blood pressure measured by random zero sphygmomanometry in the subject's right arm with the subject supine, corrected for size and age. The mean age at examination was 15.7 years. The mean systolic blood pressure of the cases was 105.8 mm Hg and of the controls 107.5 mm Hg. The corrected difference (95% confidence interval) in systolic blood pressure between the cases and controls was 1 mm Hg (-3 to +1 mm Hg; two tailed probability 0.33). Systolic blood pressure in adolescents of low birth weight is not significantly different from that of adolescents of normal birth weights.

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Background : Hypertension in children and adolescents can be defined as Systolic Blood Pressure (TDS) / Diastolic Blood Pressure (TDD) on repeated measurements obtained from values above 95 percentiles. The incidence of hypertension in Riskesdas 2013 data for the age group 15-17 years is 5.3%. The prevalence of hypertension in adolescents in the province of Central Java in the 2013 Riskesdas data was 12.8%. Prevention of increasing the value of hypertension prevalence in adolescents can be done with aerobic exercise activities such as jogging. Objective: To determine the effect of giving aerobic exercise activities to changes in blood pressure in adolescents with hypertension. Method: Thistype of research is experimental with Randomized Control Trial Group Design. Sampling was done randomly to get 18 treatment subjects and 18 control subjects. Data collected were age, sex, weight, height, sodium intake, level of physical activity, blood pressure before and after treatment. Test the independent t-test wasused for data differences in blood pressure before and after treatment in both groups and paired t-test to determine changes in blood pressure before and after treatment, whereas the test ANOVA repeated measured is used to determine the effect of aerobic exercise (jogging)on blood pressure sample. Results: There were differences in systolic and diastolic blood pressure between the treatment and control groups (p 0.05). There is an effect of giving aerobic exercise activities to decrease systolic and diastolic blood pressure (p = 0,000 and p = 0.003) for each measurement at each meeting. Conclusion: The provision of aerobic exercise activities affects the decrease in diastolic systolic blood pressure in adolescents with hypertension.

BackgroundAlthough preterm birth predisposes for cardiovascular disease, recent studies in children indicate normal blood pressure and arterial stiffness. This prospective cohort study therefore assessed blood pressure and arterial stiffness in adolescents born very preterm due to verified fetal growth restriction (FGR).MethodsAdolescents (14 (13–17) years; 52% girls) born very preterm with FGR (preterm FGR; n = 24) and two control groups born with appropriate birth weight (AGA), one in similar gestation (preterm AGA; n = 27) and one at term (term AGA; n = 28) were included. 24-hour ambulatory blood pressure and aortic pulse wave velocity (PWV) and distensibility by magnetic resonance imaging were acquired.ResultsThere were no group differences in prevalence of hypertension or in arterial stiffness (all p ≥ 0.1). In boys, diastolic and mean arterial blood pressures increased from term AGA to preterm AGA to preterm FGR with higher daytime and 24-hour mean arterial blood pressures in the preterm FGR as compared to the term AGA group. In girls, no group differences were observed (all p ≥ 0.1).ConclusionsVery preterm birth due to FGR is associated with higher, yet normal blood pressure in adolescent boys, suggesting an existing but limited impact of very preterm birth on cardiovascular risk in adolescence, enhanced by male sex and FGR.ImpactVery preterm birth due to fetal growth restriction was associated with higher, yet normal blood pressure in adolescent boys.In adolescence, very preterm birth due to fetal growth restriction was not associated with increased thoracic aortic stiffness.In adolescence, very preterm birth in itself showed an existing but limited effect on blood pressure and thoracic aortic stiffness.Male sex and fetal growth restriction enhanced the effect of preterm birth on blood pressure in adolescence.Male sex and fetal growth restriction should be considered as additional risk factors to that of preterm birth in cardiovascular risk stratification.

Objective: To assess the effect of growth during infancy and childhood on blood pressure in adolescence. Design: Birth cohort study. Setting: Pelotas, southern Brazil. Participants: 749 adolescents with complete information...

Objective: To analyze the influence of different number of blood pressure measurement on the detection of elevated blood pressure in Tibetan adolescents and provide scientific reference for standardizing the number of blood pressure measurement and accurately diagnosing elevated blood pressure in adolescents. Methods: Data were from the project "survey of the risk factors for elevated blood pressure among Tibetan adolescents" conducted from August to September 2018 in Shigatse in Tibet. A total of 2 822 Tibetan adolescents aged 12-17 years, including 1 275 boys (45.2%), were recruited by a convenient, stratified cluster sampling method. Each participant underwent three consecutive blood pressure measurements. Elevated blood pressure was defined according to the Health Industry Criterion of China: WS/T 610-2018 "Reference of screening for elevated blood pressure among children and adolescents aged 7-18 years" . Analysis of variance and χ(2) test were used to analyze the effect of different blood pressure measurement on blood pressure levels and detection of elevated blood pressure, respectively. Results: SBP and DBP decreased substantially across three consecutive blood pressure measurements[SBP: (112.7±9.7), (110.7±9.7) and (110.2±9.5) mmHg (1 mmHg=0.133 kPa); DBP: (62.7±8.2), (61.1±8.5) and (60.6±8.5) mmHg; P value for trend<0.001]. The detection rates of elevated blood pressure based on three blood pressure measurements were 12.8%, 8.7% and 7.9%, respectively (P value for trend <0.001). Of note, the difference in the detection of elevated blood pressure based on the second blood pressure measurement or based on the average value of the second and third blood pressure measurements showed no significance (8.7% and 7.2%, P=0.039). Conclusions: Blood pressure levels and the detection of elevated blood pressure in adolescents decreased substantially across three consecutive blood pressure measurements. The second blood pressure measurement might be sufficient for screening elevated blood pressure in adolescents.

Association between perfluoroalkyl substance concentrations and blood pressure in adolescents

This study is aimed at investigating the influence of body size, body fat and sexual maturation on blood pressure (BP) in adolescents. A cross-sectional study. A suburban student population of Southern Italy. One hundred ninety students attending the first and second year of a secondary school. Five were excluded because they were affected by major diseases. The remaining were 98 M and 87 F (mean age for either group = 12.0+/-0.8 y). Blood pressure was measured by a mercury sphygmomanometer, body weight by a platform beamscale, other measurements included height, biceps, triceps, subscapular and suprailiac skinfolds by a caliper; sexual maturation was evaluated according to Tanner. Body size was greater than in Tanner's population: in particular body weight (but not height) in our sample markedly exceeded that of the children of the same age in Tanner's population. Boys had higher systolic blood pressure (SBP) than girls (BP = 109/64+/-12/10 vs. 103/63+/-11/8 mm Hg, P<0.02 for SBP), while heart rate and waist/hip ratio were lower. During puberty evaluated on the basis of pubic hair growth BP in girls was higher than in the prepubertal phase (107/66+/-9/7 vs. 99/61+/-10/7, P<0.01). Pubertal boys showed a reduced percent of body fat (calculated from four skinfold measurements) in comparison to prepubertal ones (21.0%+/-4.5 vs. 24.5%+/-7.1, P<0.01). In linear correlation analysis, height, BW, BMI and lean body mass were found to be significantly associated with SBP in both sexes and to diastolic blood pressure (DBP) in girls. Percent body fat was correlated with SBP in boys, while sexual maturation was associated to SBP and DBP in girls only. Multiple regression analysis indicated a significant contribution of body size to BP variability, particularly in the girls. Sexual maturation was excluded from the final regression equations when height, BW or lean body mass were present. These data indicate that body weight in these adolescents is greater that in Tanner's population of the same age and sex. Body size appears to be a major determinant of BP, whereas sexual maturation seems to influence BP levels mainly through body growth. The influence of percent body fat on BP setting seems to be of limited importance.

OBJECTIVESTo evaluate whether genetic factors contribute to the association between low birth weight and increased blood pressure among adolescents.DESIGNHistorical cohort study of twin pairs. It was evaluated whether (1) a...

To assess the association between the consumption of caffeinated beverages and blood pressure in African American and white adolescents. This study was part of ongoing research examining stress-induced hemodynamic responses in adolescents. African American and white adolescents (n = 159) selected foods and beverages for a 3-day sodium-controlled diet. Caffeine in these foods was used to stratify participants into 3 categories (0-50 mg/d, >50-100 mg/d, and >100 mg/d). Before menu selection, blood pressure readings were obtained. A general linear model (multiple regression with both categorical and continuous variables) was developed to assess the effects of race, category of caffeine intake, and interaction of race and caffeine intake on systolic and diastolic blood pressure controlling for sex and body mass index (calculated as weight in kilograms divided by height in meters squared). The association between systolic blood pressure and caffeine category varied by race (P =.001). African Americans consuming more than 100 mg/d of caffeine had higher systolic blood pressure readings than the groups consuming 0 to 50 mg/d (mean difference, 6.0 mm Hg; 95% confidence interval [CI], 2.3 to 9.7) or more than 50 to 100 mg/d (mean difference, 7.1 mm Hg; 95% CI, 3.4 to 10.7). The effect on diastolic blood pressure was less pronounced (P =.08). The diastolic blood pressure of the group consuming more than 100 mg/d was 3.7 mm Hg (95% CI, 0.41 to 7.0) higher than the group consuming more than 50 to 100 mg/d and was not statistically different from the group consuming 0 to 50 mg/d (mean difference, 2.4 mm Hg; 95% CI, -0.9 to 5.8). There was no evidence that the association between diastolic blood pressure and caffeine intake varied by race (P =.80). For adolescents, especially African American adolescents, caffeine intake may increase blood pressure and thereby increase the risk of hypertension. Alternatively, caffeinated drink consumption may be a marker for dietary and lifestyle practices that together influence blood pressure. Additional research is needed owing to rising rates of adolescent hypertension and soft drink consumption.

Background: In young adults, higher blood pressure (BP) and visit-to-visit BP variability are independent risk factors for incident cardiovascular disease. No studies have examined if BP and visit-to-visit BP variability during early and middle childhood are independently associated with elevated BP during adolescence. Addressing this question can provide targets for primordial prevention of high BP. Hypotheses: Higher BP and BP variability in early and middle childhood are independently associated with higher BP in adolescence. Methods: We studied 476 children in the Boston Birth Cohort (enrolled 1998-2016) who had BP measured in early (1 to &lt;6 y) or middle childhood (6 to &lt;13y) and in adolescence (13 to &lt;18 y). We modelled visit-to-visit BP variability using variability independent of the mean (VIM). We used linear regression models to examine the associations of mean BP and BP VIM in early and middle childhood (exposures) with mean BP in adolescence (outcome) and adjusted for potential confounders (see Table footnote). Results: After multivariable adjustment, a 1-SD higher level of systolic BP (SBP) in early and middle childhood was associated with a 1.89 (95% CI: 1.03, 2.75) and a 4.31 (95% CI: 3.58, 5.03) mmHg higher SBP in adolescence, respectively. A 1-SD higher level of SBP VIM in early and middle childhood was associated with a 1.46 (95% CI: 0.54, 2.38) and a 0.89 (95% CI: 0.05, 1.73) mmHg higher SBP in adolescence, respectively. Higher diastolic BP (DBP) in early and middle childhood was also associated with higher adolescence DBP, but the magnitude was smaller in comparison with SBP results ( Table ). Childhood DBP VIM was not associated with DBP in adolescence. Conclusion: In this prospective US predominantly minority birth cohort, both BP levels and variability during early and middle childhood are associated with higher BP in adolescence. Our findings underscore the need for health professionals to collect early-life BP data to facilitate opportunities for the primordial prevention of high BP in adolescence and beyond.