2007, Piran, Slovenia

Environmental Ergonomics XII
Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana 2007
([glucose], mmol/L) was measured at the beginning of the experiment and in minute
15 of the hypoxic exposure.
Statistical analysis
Thirty minutes of hypoxia were divided into thirds, and the first 10-minute hypoxic
period was adopted as a stabilization period; the last two thirds of hypoxic exposure
were used for statistical analysis. Differences in HR, SaO2, V, Tty, FeO2, FeCO2, and
[glucose] were assessed with a two-factor analysis of variance (ANOVA) with
repeated measures on both factors. Whenever ANOVA yielded significant
differences, data were further analysed with a Tukey HSD post-hoc test. The level of
0.05) in both trials: 24.9 (0.8)°C in the CHO
trial, and 25.1 (0.9)°C in the control trial. Mean age, height and weight of the subjects
were: 24 (2) years, 173 (10) cm, and 73 (18) kg, respectively. Tympanic temperature
remained similar in both trials (p>0.05) throughout the experiment; it was 36.9
(0.3)°C at the end of first normoxia period in the control, and 36.8 (0.3)°C in the CHO
trial.
Glucose concentration was 4.9 (0.8) mmol/L in the control, and 4.5 (0.8) mmol/L in
the CHO trial at the beginning of the experiment; the difference between the two trials
was not statistically significant (p>0.05). In the middle of hypoxic period, thus 55
minutes following the ingestion, glucose concentration was significantly (p0.05) at 4.6 (1.1) mmol/L in the control trial. The difference between the two trials
was statistically significant (p0.05) between the two trials during normoxia, and decreased in
both trials during the hypoxic exposure. In the control trial, SaO2 decreased from 99
(1) % to 89 (4) % in the second third of hypoxia, and to 86 (6) % in the last third of
hypoxia. In the CHO trial, SaO2 decreased from 99 (1) % to 92 (4) % in the second
third of hypoxia, and to 90 (5) % in the last third of hypoxia (Figure 1). The difference
between the two trials was statistically significant (p