Figure 4From: Accelerometry and salivary cortisol response during Air Force Special Tactics Officer selectionMean salivary cortisol during the first 3 days of the STO selection. For return (n = 3), first-time (n = 6), successful (n = 4), and not successful (n = 5) candidates. Values are expressed as mean ± SD. Single asterisk (*) p < 0.05 compared to First Time.Back to article page