کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2847075 1571335 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Q˙−V˙O2 diagram: An analytical interpretation of oxygen transport in arterial blood during exercise in humans
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
پیش نمایش صفحه اول مقاله
The Q˙−V˙O2 diagram: An analytical interpretation of oxygen transport in arterial blood during exercise in humans
چکیده انگلیسی

A new analysis of the relationship between cardiac output (Q˙) and oxygen consumption (V˙O2) is presented (Q˙−V˙O2 diagram). Data from different sources in the literature have been used for validation in three conditions: exercise and rest in normoxia, and exercise in hypoxia. The effects of changes in arterial oxygen concentration (CaO2)(CaO2) on Q˙ are discussed, as well as the effects of predominant sympathetic or vagal stimulation. Differences appear depending on whether CaO2CaO2 is varied by means of changes in blood haemoglobin concentration or changes in arterial oxygen saturation. The present Q˙−V˙O2 diagram allows comprehensive description of oxygen transport in exercising humans; it expands applicability of the historical Q˙−V˙O2 relationship to include CaO2CaO2 variations; it opens new pathways for understanding underlying mechanisms; it allows computation of Q˙ from CaO2CaO2 and V˙O2 measurements, when Q˙ cannot be measured.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 193, 1 March 2014, Pages 55–61
نویسندگان
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