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. 2009 Jul 1;4(7):e6002. doi: 10.1371/journal.pone.0006002

Table 1. Cortisol change by sex and stress condition.

No stress condition (warm water) Stress condition (ice water)
Sex
Male .03±.11 ug/dL .05±.11 ug/dL
Female −.03±.10 ug/dL .23±.11 ug/dL

Mean cortisol change (15-min post-water cortisol – baseline cortisol) after the ice or warm water hand immersion, with 95% confidence intervals.