Effects of a low-pressure hyperbaric oxygen therapy on psychological constructs related to pain and quality of life in women with fibromyalgia: A randomized clinical trial.

BACKGROUND AND OBJECTIVES: Self-reported psychological variables related to pain have been posited as the major contributors to the quality of life of fibromyalgia (FM) women and should be considered when implementing therapeutic strategies among this population. The aim of this study was to explore the effect of low-pressure hyperbaric oxygen therapy (HBOT) on psychological constructs related to pain (i.e., pain catastrophism, pain acceptance, pain inflexibility, mental defeat) and quality of life in women with FM. METHODS: This was a randomized controlled trial. Thirty-three women with FM were randomly allocated to a low-pressure hyperbaric oxygen therapy group (HBOTG) (n=17), who received an 8-week intervention (5 sessions per week), and a control group (CG) (n=16). All women were assessed at baseline (T0) and upon completion of the study (T1) for self-perceived pain intensity, pain catastrophism, pain acceptance, pain inflexibility, mental defeat and quality of life. RESULTS: At T1, the HBOTG improved across all variables related to pain (i.e. self-perceived pain intensity, pain catastrophism, pain acceptance, pain flexibility, mental defeat) (p<0.05) and quality of life (p<0.05). In contrast, the CG showed no improvements in any variable. Furthermore, significant differences between the groups were found in quality of life (p<0.05) after the intervention. CONCLUSIONS: HBOT is effective at improving the psychological constructs related to pain (i.e. pain catastrophism, pain acceptance, pain flexibility, mental defeat) and quality of life among women with FM. Clinical Trial Link Clinical Trials gov identifier (NCT03801109).

Fibromyalgia syndrome is associated with sexual dysfunction regardless of physical activity status: a cross-sectional study.

BACKGROUND: Fibromyalgia syndrome (FMS) is a rheumatic disorder that has been observed to affect self-perception of sexuality. AIM: The study aims to assess sexual dysfunction (SD), establish possible associations with SD levels, and evaluate the impact of physical activity (PA) levels on SD in Spanish women with FMS as compared with healthy control women. METHODS: The study was cross-sectional. A total of 170 women voluntarily agreed to participate between September 2019 and February 2020: 88 in the FMS group and 82 in the control group. OUTCOMES: The main outcome measures were SD, as assessed through the Female Sexual Function Index (FSFI), and PA levels, as assessed with a structured interview. RESULTS: There were significant differences in every domain and total SD score between the FMS and control groups (P < .05). In addition, we obtained a moderate significant direct association (χ2[1] = 37.071, P < .05, phi = 0.467) when exploring the associations between FMS and risk of SD. Results showed statistically significant differences between the FMS group and the control group when PA levels were not reached in the desire, pain, and total scores of the FSFI (P < .05). When the PA levels were reached, between-group differences were found in all domains, as well as in the total score of the FSFI (P < .05). CLINICAL IMPLICATIONS: Sexual function should be evaluated in women with FMS, while future treatments should address this clinical area with the aim of managing SD in this population. STRENGTHS AND LIMITATIONS: The main limitation is that the outcome measures were self-reported. CONCLUSION: We found a high prevalence of SD in Spanish women with FMS, with an impact on aspects such as desire, arousal, lubrication, orgasm, satisfaction, and pain during sexual intercourse. In addition, there is a moderate direct association between FMS and SD. Ultimately, the results showed that, irrespective of PA, women with FMS reported increased SD.

Effects of Repetitive-Transcranial Magnetic Stimulation (rTMS) in Fibromyalgia Syndrome: An Umbrella and Mapping Review.

BACKGROUND: The main aim of this study was to assess the effects of repetitive-transcranial magnetic stimulation (rTMS) in patients with fibromyalgia (FMS). METHODS: We systematically searched PubMed, PEDro, EMBASE, and CINAHL. Methodological quality was analyzed using the AMSTAR and ROBIS scales, and the strength of evidence was established according to the guidelines advisory committee grading criteria. A total of 11 systematic reviews were included. The assessed variables were pain intensity, depressive symptoms, anxiety, and general health. RESULTS: Regarding pain intensity, it seems that high-frequency rTMS significantly reduces pain intensity at a 1-month follow-up when the primary motor cortex (M1) is stimulated. However, we cannot robustly conclude the same for low-frequency protocols. When we look at the combination of high and low-frequency rTMS, there seems to be a significant effect on pain intensity up to 1-week post-intervention, but after that point of follow-up, the results are controversial. Regarding depressive symptoms and anxiety, results showed that the effects of rTMS are almost non-existent. Finally, in regard to general health, results showed that rTMS caused significant post-intervention effects in a robust way. However, the results of the follow-ups are contradictory. CONCLUSIONS: The results obtained showed that high-frequency rTMS applied on the M1 showed some effect on the variable of pain intensity with a limited quality of evidence. Overall, rTMS was shown to be effective in improving general health with moderate quality of evidence. Finally, rTMS was not shown to be effective in managing depressive symptoms and anxiety with a limited to moderate quality of evidence. PROSPERO number: This review was previously registered in PROSPERO (CRD42023391032).

Respiratory Function Analysis in Patients with Chronic Pain: An Umbrella Review and Meta-Analysis of Pooled Findings.

BACKGROUND: The main aim of this umbrella review was to assess the respiratory function in patients with chronic pain (CP), including patients with chronic neck pain (CNP), chronic low back pain (CLBP), and fibromyalgia syndrome (FMS). METHODS: We searched in PubMed, PEDro, EMBASE, CINAHL, and Google Scholar (4 February 2023). The outcome measures were respiratory muscle strength (MIP/MEP) and pulmonary function (VC, MVV, FVC, FEV1, FEV1/FVC ratio, FEV25-75, and PEF). This review was previously registered in the international prospective register of systematic reviews, PROSPERO (CRD42023396722). The methodological quality was analyzed using AMSTAR and ROBIS scales, and the strength of the evidence was established according to the guidelines advisory committee grading criteria. To compare the outcomes reported by the studies, we calculated the standardized mean differences and the corresponding 95% confidence interval for the continuous variables. RESULTS: Four systematic reviews with and without meta-analysis were included, from which a total of 15 primary studies were extracted. Five meta-analyses were carried out, using analyses by subgroup according to the type of CP. The meta-analyzing variables were MIP, MEP, MVV, FEV1, and FVC. CONCLUSIONS: Overall, patients with CP have decreased respiratory muscle strength with a moderate quality of evidence. Regarding the pulmonary function, patients with CNP showed a diminished VC, PEF, MVV, FEV1, and FVC, while FEV25-75 and the FEV1/FVC ratio were conserved with a limited to moderate quality of evidence. Finally, patients with FMS and CLBP only showed a decrease in MVV with a limited quality of evidence.