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Table 6 The plasma biomarkers of participants

From: The comparison of water intake patterns and hydration biomarkers among young adults with different hydration statuses in Hebei, China

  OH (n = 58) MH (n = 72) HH (n = 26)
  Male (n = 19) Female (n = 39) Total (n = 58) Male (n = 44) Female (n = 28) Total (n = 72) Male (n = 17) Female (n = 9) Total (n = 26)
Osmolality (mOsm/kg) 299 ± 4 300 ± 6 300 ± 6 299 ± 6 298 ± 5 298 ± 5 299 ± 5 301 ± 6 300 ± 5
Na (mmol/L) 142 ± 1 140 ± 1 141 ± 1 141 ± 1 141 ± 2 141 ± 1 141 ± 1 140 ± 1 141 ± 1
K (mmol/L) 4.6 ± 0.4 4.5 ± 0.4 4.6 ± 0.4 4.6 ± 0.4 4.4 ± 0.3 4.5 ± 0.4 4.6 ± 0.4 4.5 ± 0.3 4.6 ± 0.3
Cl (mmol/L) 104 ± 2 104 ± 2 104 ± 2 104 ± 2 104 ± 2 104 ± 2 104 ± 2 104 ± 2 104 ± 2.2
Ca (mmol/L) 2.56 ± 0.04 2.49 ± 0.08 2.52 ± 0.07 2.52 ± 0.08 2.50 ± 0.07 2.51 ± 0.07 2.52 ± 0.05 2.50 ± 0.05 2.51 ± 0.05
Phosphate (mmol/L) 1.31 ± 0.12 1.39 ± 0.16 1.36 ± 0.15* 1.23 ± 0.14 1.34 ± 0.14 1.27 ± 0.15 1.20 ± 0.18 1.37 ± 0.11 1.26 ± 0.18
Mg (mmol/L) 0.93 ± 0.05 0.91 ± 0.06 0.92 ± 0.05 0.93 ± 0.05 0.90 ± 0.05 0.92 ± 0.05 0.92 ± 0.06 0.91 ± 0.06 0.92 ± 0.06
  1. Values are shown as the mean ± standard deviation (SD)
  2. *There was statistically significant difference between OH and MH groups, P < 0.05
  3. There was statistically significant difference between MH and HH groups, P < 0.05
  4. There was statistically significant difference between OH and HH groups, P < 0.05. The One-way ANOVA was used to compare the differences among the three groups, including males and females. When comparing the differences between males and females within the group, Student’s t test was used. Differences were found in the concentrations of Na (F = 7.075, P = 0.001). In OH group, the concentrations of Na and Ca were different between males and females (t = − 3.411, P = 0.001; t = − 4.488, P < 0.001); in MH group, differences were found in the concentrations of phosphate and Mg (t = 3.472, P = 0.001; t = − 2.427, P = 0.018); and in HH group, differences were found in the concentrations of Na and phosphate between males and females (t = − 2.849, P = 0.009; t = 3.050, P = 0.006)
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