| pubmed-article:9612351 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:9612351 | lifeskim:mentions | umls-concept:C0018810 | lld:lifeskim |
| pubmed-article:9612351 | lifeskim:mentions | umls-concept:C0079809 | lld:lifeskim |
| pubmed-article:9612351 | lifeskim:mentions | umls-concept:C0392752 | lld:lifeskim |
| pubmed-article:9612351 | lifeskim:mentions | umls-concept:C1880177 | lld:lifeskim |
| pubmed-article:9612351 | lifeskim:mentions | umls-concept:C2827666 | lld:lifeskim |
| pubmed-article:9612351 | pubmed:issue | 5 Pt 2 | lld:pubmed |
| pubmed-article:9612351 | pubmed:dateCreated | 1998-6-24 | lld:pubmed |
| pubmed-article:9612351 | pubmed:abstractText | The purpose of this work was to determine the temporal origins of the standard deviation of successive 5-min mean heart period sequences (SDANN) and the power of the ultralow-frequency (ULF) spectral band (< 0.0033 Hz). We hypothesized that SDANN and ULF might have their origins in changes in human activity rather than slow oscillatory rhythms. Heart period sequences were obtained from 24-h Holter electrocardiograms of 10 healthy ambulatory subjects. There was no evidence of any persistent oscillation within the ULF band. Using moving 4-h windows in short-time Fourier transforms, we showed that the amplitude of ULF fluctuated markedly, particularly during times bordering sleep. The local ULF amplitude correlated (r = 0.59 +/- 0.09) with large-scale changes in heart period quantified with 2- and 4-h wavelet transforms. Local SDANN also fluctuated, mainly around times of sleep. Although the 24-h SDANN and ULF values correlated highly, there was little correlation between their temporal distributions (r = 0.10 +/- 0.25). The temporal distributions of measures of long-range heart period variability suggest that they reflect changes in human activity levels. | lld:pubmed |
| pubmed-article:9612351 | pubmed:language | eng | lld:pubmed |
| pubmed-article:9612351 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:9612351 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:9612351 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:9612351 | pubmed:month | May | lld:pubmed |
| pubmed-article:9612351 | pubmed:issn | 0002-9513 | lld:pubmed |
| pubmed-article:9612351 | pubmed:author | pubmed-author:WilsonWW | lld:pubmed |
| pubmed-article:9612351 | pubmed:author | pubmed-author:SheldonRR | lld:pubmed |
| pubmed-article:9612351 | pubmed:author | pubmed-author:SheldonAA | lld:pubmed |
| pubmed-article:9612351 | pubmed:author | pubmed-author:RoachDD | lld:pubmed |
| pubmed-article:9612351 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:9612351 | pubmed:volume | 274 | lld:pubmed |
| pubmed-article:9612351 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:9612351 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:9612351 | pubmed:pagination | H1465-71 | lld:pubmed |
| pubmed-article:9612351 | pubmed:dateRevised | 2006-11-15 | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:meshHeading | pubmed-meshheading:9612351-... | lld:pubmed |
| pubmed-article:9612351 | pubmed:year | 1998 | lld:pubmed |
| pubmed-article:9612351 | pubmed:articleTitle | Temporally localized contributions to measures of large-scale heart rate variability. | lld:pubmed |
| pubmed-article:9612351 | pubmed:affiliation | Cardiovascular Research Group, University of Calgary, Alberta, Canada. | lld:pubmed |
| pubmed-article:9612351 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:9612351 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
| http://linkedlifedata.com/r... | pubmed:referesTo | pubmed-article:9612351 | lld:pubmed |
| http://linkedlifedata.com/r... | pubmed:referesTo | pubmed-article:9612351 | lld:pubmed |
| http://linkedlifedata.com/r... | pubmed:referesTo | pubmed-article:9612351 | lld:pubmed |
| http://linkedlifedata.com/r... | pubmed:referesTo | pubmed-article:9612351 | lld:pubmed |
