Linked Life Data

15725306

Source:http://linkedlifedata.com/resource/pubmed/id/15725306

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-2-23
pubmed:abstractText
This study aimed to investigate whether endurance-trained (ET) female athletes demonstrate differences in cardiovascular autonomic control compared with sedentary controls. Eighteen healthy eumenorrhoeic subjects, nine trained (22.4 +/- 3 years) and nine sedentary (21.0 +/- 1 years), volunteered for the study. Heart rate variability (HRV) and cardiovagal baroreflex sensitivity (BRS) measures were adopted to assess cardiac autonomic control. HRV was recorded for 30 min under both controlled (0.25 Hz) and spontaneous breathing conditions. Cardiovagal BRS was assessed using the Valsalva manoeuvre. Analysis of the HRV showed a longer R-R interval (1089 +/- 114 ms versus 865 +/- 100 ms; P<0.001) in the trained subject but only in the spontaneous breathing condition. Conversely, athletes exhibited higher normalized low frequency (LFnu, 44.2 +/- 8.5% versus 29.5 +/- 6.8%; P<0.001) and lower normalized high frequency (HFnu, 55.8 +/- 8.5% versus 69.9 +/- 7.7%; P<0.01) only during the controlled breathing condition, consequently the LF/HF ratio was also higher in the trained group in the same condition (0.83 +/- 0.3 versus 0.47 +/- 0.1, P<0.01). BRS was significantly lower in the ET group (7.95 +/- 4.0 ms mmHg(-1) versus 13.00 +/- 4.4 ms mmHg(-1), P<0.05). Further studies are necessary to elucidate the potential role of training and altered hormonal profile in the genesis of the observed differences in cardiovascular autonomic control between highly trained and sedentary control female subjects.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1475-0961
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
83-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Cardiovascular autonomic control in endurance-trained and sedentary young women.
pubmed:affiliation
Department of Applied Physiology, Strathclyde Institute for Biomedical Sciences, University of Strathclyde, Glasgow, UK.
pubmed:publicationType
Journal Article, Comparative Study