Erratum to: Extreme Physiology & Medicine 2015, 4(Suppl 1):A158 DOI 10.1186/2046-7648-4-S1-A158

The original version of this article [1] unfortunately contained an error in the equation present in the "Methods" section. The correct equation reads:

$$ {\text{CVRI}} = 100\; \cdot \;\left( {{\text{MAP}} - {\text{CVP}}} \right)/\left( {{\text{HR}}^{2}\; \cdot \;{\text{BSA}}} \right) $$