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Table 2 The effect of exercise on venous blood gases, inorganic phosphorus and lactate concentration

From: Comparison of human erythrocyte purine nucleotide metabolism and blood purine and pyrimidine degradation product concentrations before and after acute exercise in trained and sedentary subjects

 

Sedentary group

Trained group

Rest

Post-exercise

30-min recovery

Rest

Post-exercise

30-min recovery

pH

7.4 ± 0.06

7.2 ± 0.05**

7.4 ± 0.04

7.4 ± 0.06

7.2 ± 0.08*

7.4 ± 0.04

pO2 (mmHg)

31.8 ± 8.03

42.3 ± 7.15

32.5 ± 7.03

32.0 ± 7.89

44.3 ± 7.25

31.8 ± 7.13

pCO2 (mmHg)

42.3 ± 1.20

35.2 ± 1.82*

41.3 ± 0.9

42.8 ± 1.19

36.8 ± 1.62*

41.4 ± 0.89

\({\text{HCO}}_{3}^{ - }\)

(mmol/L)

23.3 ± 0.90

18.7 ± 1.81**

22.1 ± 1.21

23.2 ± 0.88

19.6 ± 1.61**

22.8 ± 1.11

Pi in plasma (mmol/L)

1.21 ± 0.41

1.42 ± 0.78#

1.41 ± 0.64#

1.14 ± 0.39

1.45 ± 0.63#

1.37 ± 0.58#

Pi in RBC (mmol/L)

1.11 ± 0.21

1.39 ± 0.20*

1.17 ± 0.16

1.16 ± 0.14

1.32 ± 0.22*

1.17 ± 0.14

LA (mmol/L)

1.4 ± 0.45

10.1 ± 2.76***

4.6##,§ ± 1.66

1.7 ± 0.37

9.8 ± 2.65***

3.6 ± 1.25##,§

  1. Values are given as mean ± SD
  2. pO 2 oxygen tension, pCO 2 carbon dioxide tension, \(HCO_{3}^{ - }\) bicarbonate, Pi inorganic phosphorous, LA lactate
  3. * P < 0.05; ** P < 0.01; *** P < 0.001; different from rest and 30-min recovery
  4. # P < 0.05; ## P < 0.01; different from rest
  5. § P < 0.001; different from post-exercise