M ME/CFS (n = 30)

F ME/CFS (n = 60)

P value

Age (years)

41 (13)

42 (9)

0.8611

Height (cm)

181 (8)

170 (7)

<0.0001

Weight (kg)

81 (15)

71 (14)

<0.0001

BSA duBois (m2)

1.7 (0.2)

1.4 (0.2)

<0.0001

BMI (kg/m2)

26.6 (4.5)

24.7 (4.6)

0.0715

Disease duration (years)

10 (7-13)

12 (9-20)

0.1873

Heart rate rest (bpm)

79 (12)

88 (11)

0.0017

Heart rate LAT (bpm)

110 (14)

116 (13)

0.0302

Heart rate peak (bpm)

149 (23)

151 (19)

0.7049

Systolic BP rest (mmHg)

126 (17)

123 (13)

0.3251

Systolic BP peak (mmHg)

188 (25)

162 (18)

<0.0001

Diastolic BP rest (mmHg)

81 (9)

82 (9)

0.8222

Diastolic BP peak (mmHg)

107 (12)

99 (12)

0.0104

Workload LAT (watt)

100 (32)

60 (19)

<0.0001

Workload peak (watt)

199 (55)

121 (30)

<0.0001

VO2 at LAT (ml/min/kg)

15 (5)

12 (2)

<0.0001

VO2 peak (ml/min/kg)

26 (8)

19 (5)

<0.0001

Perc predicted VO2 at LAT (%)

42 (14)

44 (10)

0.4599

Perc predicted VO2 at peak (%)

72 (21)

69 (17)

0.4594

RER

1.1 (0.12)

1.1 (0.11)

0.1330