Document Detail

A comparison of awake-sleep blood pressure variation between normotensive Japanese-American and Caucasian women in Hawaii.
MedLine Citation:
PMID:  14597847     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare awake-sleep ambulatory blood pressure variation between Japanese-American and Caucasian women in Hawaii, specifically determining whether Japanese-Americans have reduced dipping of blood pressure during sleep, as is found in comparisons of Japanese and US samples. METHODS: Normotensive school teachers from East Hawaii who were either of Japanese-American (n = 70) or Caucasian (n = 48) ethnicity were recruited. They wore an ambulatory blood pressure monitor (Spacelabs 90207) that took measurements every 15 min during waking hours and every 30 min during sleep for a 24-h period on a normal workday. All subjects provided demographic information and underwent a series of anthropometric measurements the day before monitoring. Japanese-American subjects also answered questionnaires relating to cultural identity and migration history. RESULTS: The Japanese-American women had significantly higher mean diastolic (P < 0.01) blood pressure during sleep. These ethnic differences in sleep blood pressure persisted when analyses controlled for age, body mass index, and the waist-hip circumference ratio. There were also significant differences in the proportion by which blood pressure dipped from waking to sleeping, with the Japanese-American women dipping significantly less than the Caucasian women (P < 0.05 systolic, P < 0.001 diastolic). CONCLUSIONS: Normotensive Japanese-American women have higher sleep pressure, and a smaller awake-sleep dip, in pressure than Caucasian women. The relative elevation of blood pressure in Japanese-American women during sleep, but not at other times of the day, is similar to the pattern seen among Japanese women in Japan.
Daniel E Brown; Gary D James; Sue L Aki; Phoebe S Mills; Michaelyn B Etrata
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of hypertension     Volume:  21     ISSN:  0263-6352     ISO Abbreviation:  J. Hypertens.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-04     Completed Date:  2004-07-12     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  England    
Other Details:
Languages:  eng     Pagination:  2045-51     Citation Subset:  IM    
Department of Anthropology, University of Hawaii at Hilo, Hilo, Hawaii 96720, USA.
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MeSH Terms
Asian Americans*
Blood Pressure*
Blood Pressure Monitoring, Ambulatory*
European Continental Ancestry Group*
Middle Aged
Reference Values
Sleep / physiology*
Wakefulness / physiology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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