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2007, Piran, Slovenia

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Seconds<br />

6.5<br />

6.0<br />

5.5<br />

5.0<br />

4.5<br />

4.0<br />

3.5<br />

3.0<br />

Match-to-Sample Response Time<br />

Before During<br />

*<br />

Cold physiology<br />

Figure 2. Match-to-sample response time before and during cold-water immersion. Asterisk<br />

denotes significant difference (p = 0.006) between measurement times.<br />

% of stimuli presented<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

Correct Hits on Visual Vigilance<br />

Before During<br />

*<br />

Figure 3. Number of correct hits as a percentage of stimuli presented before and during coldwater<br />

immersion. Asterisk denotes significant difference (p = 0.01) between measurement<br />

times.<br />

DISCUSSION<br />

These results suggest that a) core cooling rate does not have an effect on cognitive<br />

performance, b) response time is faster during cold-water immersion compared to rest, and c)<br />

visual vigilance is enhanced during cold exposure compared to resting conditions. Our results<br />

may differ from previous studies due to exertional versus passive induction of hypothermia.<br />

329

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