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Respiratory Sinus Arrhythmia and its Association with Pain in Women with Fibromyalgia Syndrome
Author(s) -
Zamunér Antonio R,
Forti Meire,
Andrade Carolina P,
Avila Mariana Arias,
Silva Ester
Publication year - 2016
Publication title -
pain practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 58
eISSN - 1533-2500
pISSN - 1530-7085
DOI - 10.1111/papr.12321
Subject(s) - supine position , medicine , fibromyalgia , vagal tone , heart rate variability , heart rate , anesthesia , diaphragmatic breathing , autonomic nervous system , physical therapy , cardiology , respiratory system , blood pressure , alternative medicine , pathology
Objectives To assess the cardiac autonomic control at rest and during the deep breathing test ( DBT ) and its association with pain in women with fibromyalgia syndrome ( FMS ). Methods The study included 20 women with FMS and 20 healthy women (control group, CG ). The pain was quantified by assessing the pressure pain threshold ( PPT ), VAS of pain, and the pain component of the SF ‐36 questionnaire. The RR intervals were recorded in the supine position and during the DBT . The heart rate variability ( VHR ) was measured by methods in the time and frequency domain. Results The group with FMS had abnormal cardiac autonomic modulation at rest and during DBT , compared to CG ( P < 0.05). Positive correlations were found between PPT and the E/I ratio ( r = 0.70), Δ FC ( r = 0.66) and power spectrum density ( DEP , r = 0.56) indices of DBT , as well as between pain component of the SF ‐36 and the E/I ratio ( r = 0.49), Δ FC ( r = 0.45) and DEP ( r = 0.50) indices of DBT . Significant correlations were observed between the FIQ questionnaire and the LF / HF ratio index in the supine position and the E/I ratio ( r = −0.63), Δ FC ( r = −0.54), and DEP ( r = −0.51) indices of DBT . Conclusions The results of VHR indices during the supine position and the DBT women with FMS suggest impairment of neurocardiac integrity associated with pain and the impact of FMS on the quality of life.