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. 2021 Sep 28;18(19):10217. doi: 10.3390/ijerph181910217

Table 1.

Pre-, -Post changes in serum, heat strain, and hydration variables.

Variable Pre- -Post0h -Post24h F/t Value p-Value ωp2/d
Rating
Serum test
sCr (mg/dL) 1.2 ± 0.3
(1.1 to 1.3)
1.6 ± 0.3 *
(1.5 to 1.8)
1.3 ± 0.3
(1.2 to 1.4)
34.5 <0.01 0.5
large
sCK (IU/L) 187.3 ± 182.2
(106.5 to 268.0)
528.0 ± 345.2 *
(374.9 to 680.9)
677.0 ± 534.2 *
(440.1 to 913.8)
16.3 <0.01 0.3
large
sBUN (mg/dL) 14.5 ± 4.1
(12.7 to 16.3)
19.4 ± 4.6 *
(17.3 to 21.4)
18.9 ± 4.2 *
(17.0 to 20.8)
26.9 <0.01 0.5
large
sALB (IU/L) 4.5 ± 0.7
(4.2 to 4.9)
5.1 ± 0.8 *
(4.7 to 5.4)
4.7 ± 0.2
(4.6 to 4.8)
7.8 <0.01 0.2
large
eGFR (mL/min/1.73m2) 80.5 ± 24.7
(69.5 to 91.4)
69.9 ± 18.5 *
(61.7 to 78.1)
74.7 ± 21.3
(65.3 to 84.1)
5.4 <0.01 0.1
moderate
CrClearance (mL/min) 87.4 ± 30.0
(74.1 to 100.7)
60.9 ± 25.9 *
(49.4 to 72.4)
78.1 ± 30.8 *
(64.4 to 91.7)
43.8 <0.01 0.6
large
sBUN/sCr ratio 12.2 ± 3.3
(10.8 to 13.7)
12.0 ± 2.7
(10.8 to 13.3)
15.3 ± 4.0 *
(13.5 to 17.1)
15.7 <0.01 0.3
large
Heat Strain and Hydration
USG 1.02 ± 0.02
(1.0 to 1.0)
1.02 ± 0.01
(1.0 to 1.0)
1.02 ± 0.01
(1.0 to 1.0)
0.8 0.5 0
trivial
USol 3.7 ± 2
(2.6 to 4.8)
5.4 ± 2 *
(4.3 to 6.5)
4.7 ± 2.3
(3.5 to 6.0)
4.5 0.01 0.1
moderate
Htc (%) 41.2 ± 2.9
(40 to 42.4)
42.4 ± 3.7
(41 to 43.8)
- −1.4 0.2 0.3
small
BW (kg) 71.7 ± 10.8
(67.6 to 75.8)
67.8 ± 15.8 *
(61.7 to 73.9)
- 2.3 0.03 0.5
moderate

Data was presented in mean ± standard deviation and 95% upper and lower limits. Significant differences (p < 0.01) with * Pre- and Post0h. sCr = creatinine, sCK= creatine kinase sBUN = blood ureic nitrogen, sALB = albumin, eGFR, estimated glomerular filtration rate, CrClearance = creatinine clearance, USG = urine specific gravity, USol = urine solids, Htc = hematocrit, BW = body weight.