Figure 2 Urine and serum pH, serum Na⁺, K⁺ and Cl⁻ levels after 12 h hydration, and the interval to CK normalisation in the group receiving 0.9% saline (NS) and that receiving lactated Ringer (LR) solution. Data are displayed as a box and whisker plot. The bottom of the box represents the 1st quartile, and the top represents the 3rd quartile. The thick line in the box represents the median. The horizontal lines at both ends of the box represent the highest and lowest values observed. The horizontal dotted lines (……) represent the reference ranges. *p<0.05; o, outlier; NS, not significant.