Linked Life Data

15850080

Source:http://linkedlifedata.com/resource/pubmed/id/15850080

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2005-4-26
pubmed:abstractText
Typically, blood pressure variability has been calculated by taking the simple mathematical standard deviations of a collection of discrete blood pressure (BP) measurements. Recently, spectral analytic techniques have been employed to examine beat-to-beat blood pressure variability and the underlying autonomic adjustments associated with the performance of various tasks. In the present study, beat-to-beat blood pressure was examined in 104 older African-Americans males and females who were part of the Healthy Aging in Nationally Diverse Longitudinal Samples (HANDLS) Study. Participants evaluated faces and sentences depicting emotional content and rested before (Baseline) and after (Recovery) the tasks. There were no significant gender effects in any analyses. In addition, there were no significant task effects. However, there was a trend for both low and high frequency systolic blood pressure variability to decrease linearly from baseline, through faces and sentences to recovery. Interestingly, both systolic and diastolic high frequency blood pressure variability was greater in older as compared to younger adults. Increased blood pressure variability has been associated with greater sheer stress and greater end organ damage. These results will explicate the effects of aging on cardiovascular disease risk. Overall, these data indicate that blood pressure variability derived via spectral analytic techniques is a useful tool for understanding cardiodynamics and may provide a more in-depth analysis of blood pressure response.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0067-8856
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43-7
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Understanding blood pressure variability: spectral indices as a function of gender and age.
pubmed:affiliation
National Institute on Aging, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA.
pubmed:publicationType
Journal Article, Clinical Trial, Controlled Clinical Trial