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Correlates of ambulatory blood pressure in healthy young women: nutrition, physical activity and stress
Author(s) -
Bedford Jennifer L.,
Barr Susan I.
Publication year - 2009
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.23.1_supplement.550.12
Subject(s) - blood pressure , medicine , endocrinology , ambulatory blood pressure , arterial stiffness , pulse pressure , physical activity , ambulatory , physical therapy
Young adult blood pressure predicts cardiovascular risk in later life. This study explored relationships between ambulatory blood pressure (ABP) and dietary intake, physical activity and stress in 120 healthy, non‐obese, 19‐35 yr old women. Participants completed a food frequency questionnaire, the Baecke physical activity questionnaire and the Perceived Stress Scale (PSS). Height, weight and 24‐hr urinary free cortisol (UFC) were measured. An ABP monitor was worn for 12 hr with measurements every 30 min to determine average systolic (SBP) and diastolic (DBP) blood pressure, mean arterial pressure (MAP) and pulse pressure (PP). Height, weight and physical activity correlated positively with PP. Age correlated negatively with PP and positively with DBP. Partial correlations, controlling for age, height, weight, physical activity and energy, revealed few significant associations (p<0.05) between nutrients and ABP: SBP correlated positively with saturated fat; SBP and MAP correlated negatively with thiamin; and DBP correlated positively with sodium. Several nutrients correlated negatively with PP: protein as % of energy, dietary folate equivalents, sodium, and selenium. SBP, DBP and MAP were positively associated with UFC (r=0.26, 0.24 & 0.26, p<0.01). ABP was not related to PSS score, though UFC and PSS score correlated positively. In this study, relationships between ABP and dietary intake or physical activity were weak, and most were with PP, an indirect index of arterial stiffness, rather than with SBP, DBP or MAP. In contrast, stress (as reflected by UFC) appeared to be a stronger correlate of ABP in these young women. Project funded by CIHR MOP 79563. Grant Funding Source Canadian Insitutes of Health Research