2007, Piran, Slovenia
2007, Piran, Slovenia 2007, Piran, Slovenia
Environmental Ergonomics XII Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana 2007 remained in the heat until core temperature had increased by ≥1°C and they had high skin and high core temperatures (HSHC). In one experimental trial subjects had their head and neck cooled (HC), by a liquid conditioned balaclava perfused with cold water during the battery of cognitive tasks, the other trial was a control (CON). Trials were undertaken in a randomised cross over design, at the same time of day and with at least 7-days between trials. Measurements were made of rectal temperature (Tc) and mean skin temperature from 4-sites (Tsk), cardiovascular function (Finometer) and perception of thermal sensation and thermal comfort. Statistical analyses were conduced using repeated measures ANOVA with post-hoc pairwise comparisons and Bonferroni corrections for multiple comparisons. Figure 1. Self-perception of Alertness (A), Contentment (B) and Calmness (C) at LSLC, HSLC and HSHC with head cooling (HC, ○, open circles and without head cooling CON, ●, closed circles). Data are presented as mean ± SE for 10 subjects. ∗ indicates significant condition*trial interaction for Alertness (F2,18 = 4.190, P=0.032), Contentment (F2,18 = 5.357, P=0.015) and Calmness (F2,18 = 8.073, P=0.003) 114 Alertness (VAS) Contentment (VAS) Calmness (VAS) 75.00 65.00 55.00 45.00 35.00 25.00 80.00 70.00 60.00 50.00 40.00 30.00 70.00 60.00 50.00 40.00 30.00 A B C LSLC HSLC HSHC * * * CON HC
Cognitive and Psycophysiological Function RESULTS Passive heating increased Tsk in the HSLC condition (P
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Cognitive and Psycophysiological Function<br />
RESULTS<br />
Passive heating increased Tsk in the HSLC condition (P
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