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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.