Pearson correlation coefficient between physical activity, energy availability and water balance and questionnaire data during the 8-day training course.

***<p>P<0.001,</p>**<p>P<0.01,</p>*<p>P<0.05.</p

Energy intake, macronutrient composition of the consumed food and water balance during the 8-day training course among the control and Ebar groups.

<p>Values are mean ± SD.</p>a<p>Estimated from food recods.</p>b<p>Energy availability  =  energy intake/basal metabolic rate estimated by the equation of Schofield et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047771#pone.0047771-Schofield1" target="_blank">[32]</a>.</p>c<p>Estimated from fluid intake records.</p>d<p>Total water intake  =  fluid intake + water content of food + metabolic water.</p

The experimental protocol.

<p>The experimental protocol.</p

Questionnaire responses during the 8-day training course among the control and Ebar groups.

<p>Difference compared to: control ## P<0.01, # P<0.05; -6 PRE ∧∧∧ P<0.001, ∧ P<0.05; PRE ***P<0.001, **P<0.01, *P<0.05; MID $ P<0.001, P<0.01, $ P<0.05; POST ¤¤¤ P<0.001, ¤¤ P<0.01, ¤ P<0.05.</p

Changes (%) in physical performance in the control and Ebar groups during the study.

<p>Differences in change compared to the controls ## P<0.01. Differences in absolute change within the group compared to: -6 PRE ∧∧∧ P<0.001, ∧ P<0.05; PRE ***P<0.001, **P<0.01; MID $ P<0.05.</p

Changes in body composition during the 8-day training course in the control and Ebar groups.

<p>*** P<0.001, significant change during the training course.</p

Physical characteristics of the control and Ebar groups before the training course.

<p>Values are mean ± SD.</p>aa<p>Estimated from 12-minute running test: VO₂max (ml·kg⁻¹·min⁻¹)  =  running distance (m) - 504.9/44.7 <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047771#pone.0047771-Cooper1" target="_blank">[57]</a>.</p