RT journal article T1 Immersive Virtual Reality-Based Exercise for Pain Management in Fibromyalgia: An Exploratory Study with Risk of Poor Outcomes Stratification A1 Carvajal-Parodi, Claudio A1 Arias-Álvarez, Gonzalo A1 Ulloa-Díaz, David A1 Romero-Vera, Luis A1 Andrades-Ramírez, Oscar A1 Guede-Rojas, Francisco A1 Ponce González, Jesús Gustavo A2 Didáctica de la Educación FísicaPlástica y Musical K1 exercise K1 fibromyalgia K1 numeric rating scale K1 pressure pain threshold K1 risk of poor outcomes K1 virtual reality AB Fibromyalgia (FM) is characterized by persistent widespread pain that severely impacts quality of life. Immersive virtual reality-based exercise (iVRE) is emerging as a therapeutic modality for chronic pain management. However, research on iVRE in FM patients has primarily focused on perceived pain intensity (PI), with limited exploration of underlying analgesic mechanisms. This study aims to explore the effects of iVRE on PI, considering risk of poor outcomes (RPO) stratification, and on mechanical pain sensitivity (MPS) in FM. A single-arm, uncontrolled, pre-post-test exploratory study was conducted in subjects with FM. The intervention included 2 weekly 15-min iVRE sessions for 6 weeks. PI (numeric rating scale [NRS]) and MPS (pressure pain thresholds [PPTs] at the upper trapezius, lumbar spine, and knee) were assessed at baseline, after the first session (to assess exercise-induced hypoalgesia), and postintervention. RPO was assessed using the Keele STarT MSK Tool. Eleven participants completed the study. No adverse effects were reported. Clinically important reductions were observed in PI (mean difference [MD]: −2.36, 95% CI: [−4.15, −0.58], d = 0.89; p < 0.05) with this effect being associated with baseline RPO. No observable changes were found in PPTs (all 95% CIs included 0, p > 0.05). In this sample, iVRE appears to reduce PI but not PPTs, suggesting the persistence of MPS and limitations in activating endogenous pain inhibitory mechanisms. Further randomized controlled trials with larger samples are needed to corroborate these results. PB Multidisciplinary Digital Publishing Institute (MDPI) SN 2076-3417 YR 2025 FD 2025 LK http://hdl.handle.net/10498/38718 UL http://hdl.handle.net/10498/38718 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-nov-2026