https://www.selleckchem.com/products/ca-170.html Correlation analyses showed a negative correlation between the PANSS negative score (PANSS-N) and total power (TP), low-frequency power (LF), and high-frequency power (HF) at Time 1. The results were further examined with multiple linear regression analysis and remained significant between the PANSS-N score and HF (β = -0.306, P = .012). A generalized estimating equation model revealed the above negative association to be significant considering both timepoints. Discussion The negative association between negative symptom severity and parasympathetic activity was significant, which may inspire further research into the corresponding treatment, the mechanisms, and the use of HRV as an applicable biomarker for treatment response.Background Fibromyalgia (FM) is a complex long-term condition associated with pain, fatigue and concentration difficulties. There is limited robust evidence for the effectiveness of pharmacological treatments for FM, with current guidelines recommending nonpharmacological interventions. The clinically developed Fibromyalgia Self-Management Programme (FSMP) is a nonpharmacological, multidisciplinary education group intervention. The FSMP aims to provide condition-specific, patient-centred education and exercise advice, supporting the development of core self-management skills. This research aimed to map the FSMP to a recommended behaviour change taxonomy (BCT). Methods Non-participatory observations of the 4- and 6-week FSMP were conducted. Detailed notes on the content of the course, therapist delivery and any additional content not included in the manual were recorded. Subsequently, semistructured interviews were conducted with both therapists (n = 4) and patients (n = 9). Observation and a review of the FSMP manual data were deductively coded to the BCT. Interview data were added to the framework. Results The review of the FSMP manual and observations of the course showed that the programme co