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Memorial University - Electronic Theses and Dissertations 3
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Document Description
TitleThe influence of human core temperature on minute ventilation
AuthorSancheti, Ajay, 1977-
DescriptionThesis (M.P.E.)--Memorial University of Newfoundland, 2002. Human Kinetics and Recreation
Date2002
Pagination1 v. (various foliations) : ill.
SubjectBody temperature; Respiration
DegreeM.P.E.
Degree GrantorMemorial University of Newfoundland. School of Human Kinetics and Recreation
DisciplineHuman Kinetics and Recreation
Languageeng
NotesIncludes bibliographical references
AbstractBody temperature is known to affect human ventilation (Vg), yet the nature and mechanisms of this relationship are not resolved. The first study in this thesis explores how exercise-induced increases in body temperature affects ventilatory components, namely tidal volume (Vt) and frequency of respiration (f), and if these relationships are reproducible. Expressed as a function of esophageal temperature (Tes) in seven adult males during incremental exercise to maximum, ventilation and its components were reproducible using intraclass correlation coefficients, 0, 84 < R < 0.93 (p<0.05). Since the relationships between ventilation variables and Tes were reproducible, a second study examined whether the mechanism of this effect could be mediated by an increased ventilatory sensitivity to C02- Central sensitivity to C02 was assessed using a modified Read rebreathing protocol before and after exercise induced warming in 6 male subjects. The slope and threshold point of ventilation expressed as a function of end tidal carbon dioxide were increased and decreased respectively, indicating an increased to sensitivity to C02 after body warming. In conclusion, the results support core temperature influence on human ventilation in a reproducible manner and that the effect of ventilation may be partially mediated by an increased central sensitivity to carbon dioxide.
TypeText
Resource TypeElectronic thesis or dissertation
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifiera1591225
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(14.87 MB) -- http://collections.mun.ca/PDFs/theses/Sancheti_Ajay.pdf
CONTENTdm file name165281.cpd