Skip to main content

Table 1 Demographic features and main activity measures

From: Physical activity measures in patients with myalgic encephalomyelitis/chronic fatigue syndrome: correlations between peak oxygen consumption, the physical functioning scale of the SF-36 questionnaire, and the number of steps from an activity meter

Number of patients


Age in years

41 (11)

Fibromyalgia (number/percentage)

58 (59%)

BMI in kg/m2

24.4 (5.2)

Disease duration in years (median/IQR)

12 (6–7)

SBP at rest in mmHg

125 (12)

DBP at rest in mmHg

78 (8)

Heart rate at rest in bpm

80 (13)

Number of steps/day (median/IQR)

4683 (3269–7399)

SF-36 Physical Activity scale

46 (21)

%peak VO2

76 (18)


1.11 (0.11)

RER ≥ 1.10 (number/percentage)

53 (54%)

  1. All values are mean (SD) unless otherwise noted
  2. BMI body mass index, no number, SBP systolic blood pressure, DBP diastolic blood pressure, HR heart rate, RER respiratory exchange ratio, %peak VO2 oxygen consumption at peak exercise as percentile of a reference population