Table 4 Haematological and cardiopulmonary exercise testing variables pre- and post-intravenous iron

[Hb] (g^.l⁻¹)

109 ± 14

116 ± 12

7.3 ± 6.4

Paired t test

 < 0.0001

tHb-mass (grams)

497 ± 134.0

546 ± 139

49.3 g ± 41.3

Paired t test

 < 0.0001

Iron (µmol.l⁻¹)

7.2 ± 4.3

12.3 ± 4.2

6.3 ± 3.5

Paired t test

 < 0.0001

Transferrin (grams.l⁻¹)

3.0 [2.8–3.3]

2.0 [1.3–2.4]

0.8 [0.4–1.1]

Wilcoxon

 < 0.0001

Transferrin saturation (%)

13.1 ± 8.5

25.3 ± 7.6

16.2 ± 6.2

Paired t test

0.0002

\(\dot{\text{V}}\) O_{2 AT} (ml^.kg^.−1 min⁻¹)

9.1 ± 1.7

9.8 ± 2.5

0.63 ± 1.51

Paired t test

0.0964

\(\dot{\text{V}}\) O₂ peak (ml^.kg^.−1 min⁻¹)

15.2 ± 4.1

16.3 ± 4.4

1.0 ± 1.6

Paired t test

0.0165

Peak WR (watts)

93 [67–112]

96 [68–122]

5 [-2–13]

Wilcoxon

0.0198

Exercise time (seconds)

475 ± 130

493 ± 140

17.7 ± 58.7

Paired t test

0.2041