Dynamics of the protein concentration (mg/ml) in saliva in the control and stress groups.

<p>Dynamics of the protein concentration (mg/ml) in saliva in the control and stress groups.</p

The dynamics of saliva secretion rate (ml/min) over a two-hour period (T0–T5) in the control group (C) and the stress subgroups (S1 and S2).

<p>There was no significant difference between the control group (C) and the two stress subgroups (T0: F = 0.91; p = 0.408; T1: F = 0.175; p = 0.840; T2: F = 0.28; p = 0.752; T3: F = 1.13; p = 0.329; T4: F = 0.62; p = 0.539; T5: F = 1.89; p = 0.160; AUC over T0 to T5 time interval excluding T2: F = 0.372; p = 0.544; ANOVA group interaction). For further description, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0051323#pone-0051323-g001" target="_blank">Fig. 1</a>.</p

Correlation between STAI-State score and salivary flow rate.

<p>Correlation between STAI-State score and salivary flow rate.</p

Graphic summary of the experimental procedure.

<p>Graphic summary of the experimental procedure.</p

Correlation between salivary flow rate and cortisol concentration.

<p>Correlation between salivary flow rate and cortisol concentration.</p

Correlation between STAI-State score and salivary cortisol concentration.

<p>Correlation between STAI-State score and salivary cortisol concentration.</p

Dynamics of the salivary cortisol concentration (nmol/l) over a two-hour period (T0–T5) in the control group and both stress subgroups.

<p>Group S1 showed no significant increase in salivary cortisol concentration. Group S2 showed a significant increase in salivary cortisol concentration at T1, T2, T3 and T4 compared to the control group (T0: F = 2.01; p = 0.142; T1: F = 10.23; p<0.001; T2: F = 19.77; p<0.001; T3: F = 42.15; p<0.001; T4: F = 19.16; p<0.001; T5: F = 0.189; p = 0.829 ANOVA group interaction). For further description, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0051323#pone-0051323-g001" target="_blank">Fig. 1</a>.</p