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Table 2 CPET1 and CPET2 in CSF/ME patients versus controls&

From: Patients with chronic fatigue syndrome performed worse than controls in a controlled repeated exercise study despite a normal oxidative phosphorylation capacity

  CPET1 CPET2
  Patients n = 15 Controls n = 15 Patients n = 15 Controls n = 15
FVC (L) 3.70 ± 0.73 3.71 ± 0.77 3.71 ± 0.73 3.76 ± 0.72
FEV 1 (L) 2.95 ± 0.61 2.98 ± 0.55 2.94 ± 0.46 3.05 ± 0.53
Rest
Heart rate (beats/min) 86.5 ± 10.6 80.7 ± 8.6 87.9 ± 11.2 80.9 ± 8.8
O2 pulse (mL/beat) 4.43 ± 0.72 4.73 ± 0.86 4.26 ± 0.76 4.73 ± 0.88
V'O2/kg [mL/(min.kg)] 5.93 ± 1.28 6.27 ± 0.80 5.87 ± 1.30 6.20 ± 0.56
Anaerobic Threshold
WR (Watt) 58.6 ± 24.2 82.9 ± 29.1* 54.5 ± 20.9 92.9 ± 31.1**
Heart rate (beats/min) 110 ± 14 111 ± 10 112 ± 13 118 ± 10#
O2 pulse (mL/beat) 7.69 ± 1.50 9.19 ± 2.42 7.01 ± 1.74 # 9.48 ± 2.69**
V'O2/kg [mL/(min.kg)] 12.8 ± 3.0 16.7 ± 4.0** 11.9 ± 2.9 18.0 ± 4.6**#
V'E/V'CO2 29.2 ± 2.3 26.9 ± 1.5** 29.1 ± 3.7 25.7 ± 2.0**#
Maximal exercise
WR (Watt) 132 ± 30 188 ± 46** 125 ± 35 196 ± 51** ##
Heart rate (beats/min) 158 ± 20 167 ± 8 155 ± 21 168 ± 8*
O2 pulse (mL/beat) 9.19 ± 2.18 12.43 ± 5.25* 8.82 ± 2.20. 11.70 ± 3.01**
V'O2/kg [mL/(min.kg)] 22.3 ± 5.7 31.2 ± 7.0** 20.9 ± 5.5 ## 31.9 ± 7.4**#
  1. & Data are presented as mean ± SD
  2. Differences evaluated by multivariate or repeated measures ANOVA:
  3. *: P < 0.05; ** P < 0.01 between patients and controls
  4. #: P < 0.05; ## P < 0.01 between CPET1 and CPET2