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Table 2 Exercise characteristics of 22 normal weight (NW) and 22 obese (OB) patients with COPD

From: Maximal exercise in obese patients with COPD: the role of fat free mass

 

Rest

Peak

 

NW

OB

NW

OB

VO2 (mL/min)

284 ± 77

313 ± 81

1,114 ± 308

1,405 ± 482*

VO2/FFM (mL/kg)

6.3 ± 2.0

5.9 ± 1.9

24.1 ± 5.7

25.6 ± 7.6

Workload (watts)

0

0

74 ± 24

94 ± 36*

VE (L/min)

11.5 ± 2.2

10.7 ± 3.2

42.1 ± 13.1

40.8 ± 12.3

IC/TLC

0.28 ± 0.09

0.36 ± 0.08**

0.25 ± 0.08

0.29 ± 0.08

VT/VC

0.23 ± 0.08

0.27 ± 0.07

0.42 ± 0.15

0.55 ± 0.11**

VT/IC

0.36 ± 0.12

0.31 ± 0.09

0.73 ± 0.33

0.62 ± 0.11

PETCO2 (mm Hg)

30 ± 4

36 ± 3

36 ± 6

44 ± 7

SpO2 (%)

96 ± 2

95 ± 2

95 ± 2

94 ± 3

HR (bpm)

79 ± 14

84 ± 13

123 ± 18

124 ± 18

O2Pulse (mL/bpm)

3.6 ± 1.0

3.8 ± 0.9

9.2 ± 2.9

11.3 ± 3.7*

VAS dyspnea (mm/watt)

0

0

1.17 ± 1.0

1.12 ± 0.9

VAS fatigue (mm/watt)

0

0

1.19 ± 0.5

0.89 ± 0.4*

  1. *p value < 0.05.
  2. **p value < 0.01.
  3. Values are expressed as mean ± SD.