Table 2 Cardiopulmonary exercise testing indices

RPE– leg

17.2 ± 2.3

[17.0-17.4]

16.7 ± 2.4

[16.3–17.1]

17.3 ± 2.3

[17.1–17.5]

0.011

RPE - chest

15.9 ± 2.6

[15.7–16.1]

16.0 ± 2.5

[15.5–16.4]

15.9 ± 2.7

[15.6–16.2]

0.755

Peak V̇O₂

[ml/min]

1057 ± 536

[1011–1102]

1122 ± 764

[990–1254]

1036 ± 439

[993–1079]

0.112

Peak V̇O₂/W

[ml/kg/min]

16.8 ± 7.2

[16.2–17.5]

%Peak V̇O₂

[%]

71.5 ± 23.9

[69.5–73.6]

73.3 ± 32.8

[67.6–78.9]

71.0 ± 20.2

[69.0–73.0]

0.352

Peak HR

[bpm]

125.1 ± 25.5

[123.0-127.3]

125.9 ± 23.7

[121.8–130.0]

124.9 ± 26.1

[122.3-127.4]

0.698

Peak RER

1.15 ± 0.1

[1.14–1.16]

1.13 ± 0.09

[1.11–1.14]

1.16 ± 0.1

[1.15–1.17]

0.001

ΔV̇O₂/ΔWR

8.8 ± 1.9

[8.6-9.0]

8.7 ± 1.9

[8.4-9.0]

8.8 ± 1.9

[8.6-9.0]

0.540

V̇E/V̇CO₂ slope

35.5 ± 9.5

[34.7–36.3]

35.1 ± 8.8

[33.6–36.7]

35.2 ± 7.5

[34.5–36.0]

0.923

Y-intercept

4.3 ± 3.3

[4.0-4.6]

4.6 ± 3.0

[4.1–5.1]

4.4 ± 2.9

[4.1–4.6]

0.423

minimum V̇E/V̇CO₂

38.6 ± 9.1

[36.5–40.6]

42.0 ± 10.6

[37.4–46.7]

37.5 ± 8.3

[35.3–39.7]

0.056

rest RR

17.0 ± 4.4

[16.6–17.4]

17.6 ± 3.5

[17-18.2]

16.8 ± 4.6

[16.3–17.2]

0.070

peak RR

34.5 ± 8.7

[33.8–35.3]

33.3 ± 7.4

[32.1–34.6]

34.9 ± 9.1

[34.0-35.8]

0.074

rest VD/VT

0.42 ± 0.06

[0.41–0.42]

0.43 ± 0.06

[0.42–0.44]

0.41 ± 0.06

[0.41–0.42]

0.061

peak VD/VT

0.34 ± 0.05

[0.34–0.35]

0.34 ± 0.05

[0.33–0.35]

0.34 ± 0.05

[0.34–0.35]

0.793

rest V̇O₂/HR

2.9 ± 0.8

[2.9-3.0]

3.0 ± 0.7

[2.9–3.1]

2.9 ± 0.8

[2.8-3.0]

0.391

Peak V̇O₂/HR

8.1 ± 2.8

[7.8–8.3]

8.3 ± 2.7

[7.8–8.8]

8.0 ± 2.8

[7.7–8.3]

0.348