Table 1

Controlled heart rate variability analyses in patients with fibromyalgia

Reference

Number of patients

Number of controls

Duration of heart rate variability analysis

Main conclusion


Martinez-Lavin and colleagues, 1998 [11]

30 women

30 women

24 hours

Sympathetic hyperactivity

Cohen and colleagues, 2000 [12]

22 women

22 women

20 minutes

Sympathetic hyperactivity

Raj and colleagues, 2000 [13]

17 women

14 women

24 hours

Sympathetic hyperactivity

Cohen and colleagues, 2001 [14]

19 men

19 men

20 minutes

Sympathetic hyperactivity

Stein and colleagues, 2004 [15]

26 (19 women, 7 men)

36 (18 women, 18 men)

24 hours

Sympathetic hyperactivity in women, not in men

Furlan and colleagues, 2005 [16]

16 women

16 women

30 minutes

Sympathetic hyperactivity

Ulas and colleagues, 2006 [17]

34 women

22 women

30 minutes

Sympathetic hyperactivity


Martinez-Lavin Arthritis Research & Therapy 2007 9:216   doi:10.1186/ar2146