THE IMPACT OF CORE TEMPERATURE CORRECTIONS ON EXERCISE-INDUCED HYPOXEMIA

Abstract

ered as an important limitation to physical performance with a prevalence of ~50 % in trained male athletes, but described in both sexes, across the range of both age and physical fitness in more in both arterial oxygen partial pressure (PaO2) and oxy-haemoglobin saturation 2 2 2 correction made for the change in body temperature during intense exercise. an offset of approximately 1.3oC, and were considered much more appropriate and relevant indicators of therm work active muscle temperature (vastus lateralis) was measured during the The primary purpose of this doctoral dissertation was to investigate the effect of body temperature responses at physiologically relevant sites during an incremental exercise test on the phenomenon of exercise-induced hypoxemia (EIH). This phenomenon has been consid recent literature. Previously this phenomenon has been described as a decrement (SaO or SpO ) with, particularly important for PaO , a lack of or inappropriate The initial study of this thesis determined the thermal response within the body at physiologically relevant sites measured simultaneously during an incremental exercise test. The results demonstrated the inadequacy of rectal temperature as an indicator of the acute temperature changes occurring during an incremental exercise test due to its slow response rate and relative thermal inertia. Radial arterial blood and oesophageal temperatures were shown to behave almost identically during the exercise test, albeit with al changes during exercise. As an extension of the initial