Why the study?
Does total sleep duration affect systolic and diastolic blood pressure in preschool children?
Does total sleep duration affect systolic and diastolic blood pressure in preschool children?
Total sleep duration is positively correlated with systolic blood pressure in preschool children, suggesting extremely long sleep may be associated with subclinical health issues.
No immediate change to preschool BP evaluation; leaves open whether sleep duration affects systolic pressure.
The onset of some adult diseases, e.g., cardiovascular disease, is known to be associated with lifestyles in childhood. The objective of this study was to clarify the relationship between total sleep duration (TSD) and systolic and diastolic blood pressure (SBP and DBP) among 117 children at ages 5-6 years. Parents reported their children's typical bedtimes and wake times for weekdays, and questions about mandatory nap times were answered by the preschool teachers. In the children, the mean TSD, SBP, and DBP were 624 +/- 57 (standard deviation) min, 99 +/- 10 mmHg, and 62 +/- 9 mmHg, respectively. When the children were divided into quartile groups based on TSD, the SBP was significantly higher in the highest group (TSD > 660 min) than in the lowest group (TSD < or = 585 min). The TSD was significantly correlated with SBP (r = 0.265) but not with DBP (r = 0.105), these relationships were similar when TSD and possible confounders such as age and body mass index were set as independent variables of multiple regression analysis. These findings suggest that sleep duration in preschool children is associated with SBP, and extremely short or long sleep may invite subclinical health problems.
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Sampei et al. (2006) studied this question.
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