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. 2020 Apr 19;17:22. doi: 10.1186/s12970-020-00351-y

Table 2.

PTSR-related blood gas parameters in the bicarbonate supplementation and control groups under normoxia and hypoxia, and delta values

PO2
[mmHg]		 PCO2
[mmHg]		 saO2
[%]		 pHb [HCO3−] [mmol/L] BE
[mmol/L]

N

O

R

 BIC PRE PTSR 99.6 ± 23.2 32.2 ± 10.7 97.6 ± 1.2 7.44 ± 0.04 21.7 ± 6.1 −2.4 ± 5.6
POST PTSR 94.4 ± 11.4 38.3 ± 4.8 95.8 ± 1.5 7.26 ± 0.02 17.4 ± 1.8 −9.7 ± 1.9
DIFF PTSR −5.2 ± 30.1 6.1 ± 11.0 − 1.8 ± 2.2 − 0.18 ± 0.04 − 4.3 ± 6.0 −7.3 ± 5.6
CON PRE PTSR 82.6 ± 7.9 38.7 ± 3.1 96.1 ± 1.4 7.42 ± 0.02 24.9 ± 1.3 0.3 ± 1.1
POST PTSR 90.2 ± 7.9 38.7 ± 3.8 95.5 ± 1.1 7.26 ± 0.02 17.6 ± 2.0 − 9.5 ± 2.1
DIFF PSTR 7.6 ± 9.7 − 0.0 ± 2.9 − 0.7 ± 1.6 − 0.15 ± 0.04 −7.3 ± 1.3 − 9.8 ± 1.7

H

Y

P

 BIC PRE PTSR 49.4 ± 2.5 31.6 ± 1.9 88.9 ± 1.7 7.52 ± 0.03* 26.0 ± 2.1* 3.2 ± 2.4*
POST PTSR 57.3 ± 5.4 30.6 ± 1.8 89.4 ± 2.8 7.40 ± 0.03* 18.8 ± 1.2* − 6.0 ± 1.6*
DIFF PTSR 7.8 ± 4.9 − 1.0 ± 0.5 0.5 ± 2.6 − 0.13 ± 0.01* −7.2 ± 0.9 − 9.2 ± 0.9
CON PRE PTSR 54.2 ± 5.1 28.4 ± 2.2 89.6 ± 3.0 7.46 ± 0.01 20.1 ± 1.3 − 3.8 ± 1.2
POST PTSR 58.3 ± 3.3 28.4 ± 4.3 87.1 ± 1.6 7.29 ± 0.03 12.6 ± 1.5 − 14.1 ± 1.9
DIFF PTSR 4.0 ± 7.7 0.0 ± 3.2 −2.6 ± 3.8 − 0.17 ± 0.03 −7.4 ± 1.6 −10.3 ± 1.9
∆ BIC PRE PTSR −50.2 ± 23.0 −0.6 ± 10.8 −8.7 ± 2.3 0.08 ± 0.06 4.4 ± 5.1* 5.6 ± 4.3*
POST PTSR −37.2 ± 13.0 − 7.7 ± 3.9 −6.5 ± 2.9 0.14 ± 0.04 1.5 ± 1.6* 3.7 ± 2.2*
DIFF PTSR 13.0 ± 27.0 −7.0 ± 10.9 2.3 ± 1.6 0.06 ± 0.38* − 2.9 ± 5.7 −1.9 ± 5.4
CON PRE PTSR −28.3 ± 10.8 − 10.4 ± 1.8 −6.5 ± 3.6 0.04 ± 0.02 −4.8 ± 0.6 −4.1 ± 0.7
POST PTSR −31.9 ± 9.8 − 10.3 ± 4.1 −8.4 ± 2.2 0.02 ± 0.05 − 4.9 ± 2.4 −4.6 ± 3.0
DIFF PTSR −3.6 ± 16.9 0.1 ± 4.0 −1.9 ± 4.8 −0.02 ± 0.05 −0.1 ± 2.3 −0.5 ± 3.1

Data presented as mean ± standard deviation. PO2 Oxygen partial pressure, PCO2 Carbon dioxide partial pressure, saO2 Oxygen saturation, pHb Blood pH value, [HCO3−] Blood bicarbonate concentration, BE Base excess, BIC Bicarbonate supplementation group (n = 5), CON Control (n = 5), NOR Normoxia, HYP Hypoxia, PTSR Portable tethered sprint running test, PRE PTSR Pre-PTSR values, POST PTSR Post-PTSR values, DIFF PTSR Difference between pre- and post-PTSR values (DIFF = POST – PRE). ∆ = HYP minus NOR. For further details see Materials and Methods section. *p < 0.05 vs. CON. For p-values see results section