Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
|
pubmed:dateCreated |
1990-9-11
|
pubmed:abstractText |
1. We used digital filtering techniques and segmental analysis to dissect a series of respiratory variables into three components: (a) outlying values, including deep breaths or sighs; (b) random variation; (c) non-stationary baseline variation. 2. Records of about 30 min breathing were obtained from normal adults at rest and at 50 W exercise. 3. Deep breaths were defined as having a tidal volume greater than 2.5 sd above the mean. 4. We related these deep breaths to preceding trends in tidal volume and end-tidal partial pressure of CO2. 5. At rest, there was no relation between deep breaths and tidal volume, but the deep breaths were significantly clustered around the troughs in end-tidal partial pressure of CO2. 6. At 50 W exercise, there was no relation between deep breaths and end-tidal partial pressure of CO2, but the deep breaths were significantly clustered around tidal volume troughs. 7. Results obtained by pneumography were concordant with those obtained by using a mouthpiece to measure ventilation.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0143-5221
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
78
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
573-8
|
pubmed:dateRevised |
2008-11-21
|
pubmed:meshHeading |
pubmed-meshheading:2165889-Adult,
pubmed-meshheading:2165889-Carbon Dioxide,
pubmed-meshheading:2165889-Female,
pubmed-meshheading:2165889-Humans,
pubmed-meshheading:2165889-Male,
pubmed-meshheading:2165889-Partial Pressure,
pubmed-meshheading:2165889-Physical Exertion,
pubmed-meshheading:2165889-Respiration,
pubmed-meshheading:2165889-Rest,
pubmed-meshheading:2165889-Tidal Volume,
pubmed-meshheading:2165889-Time Factors
|
pubmed:year |
1990
|
pubmed:articleTitle |
Timing of deep breaths during rest and light exercise in man.
|
pubmed:affiliation |
Department of Medicine, St George's Hospital Medical School, London.
|
pubmed:publicationType |
Journal Article,
Clinical Trial,
Controlled Clinical Trial,
Research Support, Non-U.S. Gov't
|