Linked Life Data

16005265

Source:http://linkedlifedata.com/resource/pubmed/id/16005265

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2005-9-12
pubmed:abstractText
Heart rate variability (HRV) analysis holds increasing interest but electrocardiographic (ECG) recordings are strongly disturbed by body movements, changes in environment and respiration. Here we give arguments for the use of slow wave sleep (SWS) as an appropriate recording condition. Sixteen healthy subjects aged 21-31 years (10 males, 6 females) underwent polygraphic sleep, ECG, and respiratory recordings during one experimental night. HRV was analyzed in 5-min SWS segments and compared to data collected during quiet wake in the morning with controlled breathing, using for each individual the same respiratory frequency as that recorded during SWS. SWS has two major advantages. First, it is a quiet sleep period, free of any external confounding events and is characterized by fewer body movements or arousals that cause abrupt heart rate (HR) increases which disrupt the ECG signal. Second, SWS avoids the deleterious effect of controlled breathing on HRV. Respiratory cycles were spontaneously more regular during SWS than during generally used wake (Standard deviation (SD) of the respiratory cycles was 0.27+/-0.02 s during SWS vs 0.42+/-0.07 s during wake under controlled breathing; p<0.01). Compared to quiet wake, the SD of normal R-R intervals reflecting global variability was significantly lower during SWS (54.3+/-4.7 vs 78.8+/-6.1 ms; p<0.001) and the normalized high frequency power was increased (0.57+/-0.04 vs 0.51+/-0.03; p<0.05), suggesting a higher parasympathetic control of the heart. Thus, SWS offers a "self-controlled" and undisturbed moment of observation for assessing time and frequency domain HRV indexes. Its relevance as an optimal ECG recording condition has to be confirmed in various experimental conditions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1566-0702
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
121
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
81-6
pubmed:dateRevised
2009-8-12
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Is slow wave sleep an appropriate recording condition for heart rate variability analysis?
pubmed:affiliation
Laboratoire des Régulations Physiologiques et des Rythmes Biologiques chez l'Homme, Faculté de Médecine, 4, rue Kirschleger, 67085 Strasbourg Cedex, France.
pubmed:publicationType
Journal Article, Comparative Study