Table 5 |
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|
Significant correlations with r absolute value ≥ 0.05 between symptom scales and HRV parameters evaluated during sleeping hours (0000 to 0600 hours). |
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|
Fibromyalgia (n = 22) |
Control (n = 22) |
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|
|
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|
r |
P value |
r |
P value |
|||
|
|
||||||
|
FIQ total score |
SDNN |
0.69 |
< 0.001 |
|||
|
SDANN |
0.60 |
0.003 |
||||
|
FIQ VAS pain |
SDSD |
-0.65 |
0.001 |
|||
|
RMSSD |
-0.65 |
0.001 |
||||
|
pNN50 |
-0.62 |
0.002 |
||||
|
FIQ VAS fatigue |
SDNN |
0.65 |
0.001 |
|||
|
SDANN |
0.57 |
0.005 |
||||
|
FIQ VAS anxiety |
SDNN |
0.62 |
0.002 |
|||
|
SDANN |
0.53 |
0.011 |
||||
|
FIQ VAS depression |
SDNN |
0.52 |
0.012 |
|||
|
SDANN |
0.51 |
0.015 |
||||
|
COMPASS constipation |
SDNN |
-0.53 |
0.010 |
|||
|
HADS depression |
Mean NN |
-0.53 |
0.010 |
|||
|
SF-36 mental component |
SDSD |
0.64 |
0.001 |
|||
|
RMSSD pNN50 |
0.64 0.64 |
0.001 0.001 |
||||
|
|
||||||
|
COMPASS, composite autonomic symptom scale; HADS, hospital anxiety and depression scale; FIQ, fibromyalgia impact questionnaire; Mean NN, mean NN interval; pNN50, percentage of adjacent pairs of R-R intervals that differ by more than 50 ms from each other in a given time period; RMSSD, square root of the mean of the squares of differences between adjacent NN intervals; SDANN, mean standard deviation of the average NN intervals calculated over 5 minutes; SDNN, standard deviation of the NN intervals; SDSD, standard deviation of the successive NN differences; SF-36, health survey short format 36 items; VAS, visual analogue scale. |
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|
Lerma et al. Arthritis Research & Therapy 2011 13:R185 doi:10.1186/ar3513 |
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