Abstract
Exercise is a core non-pharmacological treatment for fibromyalgia and is consistently recommended in clinical guidelines. However, exercise interventions are often inadequately reported, limiting reproducibility, implementation in clinical practice, and comparison across studies. This article aims to provide a comprehensive description of the rationale, design, and delivery of the land- and water-based exercise interventions implemented in the al-Ándalus Randomized Controlled Trial (RCT), following the Consensus on Exercise Reporting Template (CERT). Women aged 35-65 years diagnosed with fibromyalgia (n = 180) were recruited in Southern Spain (Andalucía) and allocated to one of three groups: usual care (control), land-based supervised exercise, or water-based supervised exercise (n = 60 per group). Participants in the intervention groups completed a 24-week supervised multicomponent exercise program comprising aerobic, strength, and flexibility training delivered three times per week on non-consecutive days (45-60 min/session). The intervention rationale, progression criteria, supervision procedures, adherence strategies, and exercise components are reported according to the 16-item CERT checklist. This report provides a detailed and standardised description of a supervised multicomponent exercise intervention for women with fibromyalgia delivered in both land- and water-based settings. By facilitating transparency, reproducibility, and implementation, the protocol may serve as a practical resource for clinicians and exercise professionals and as a methodological reference for researchers seeking to improve the reporting quality of exercise interventions in fibromyalgia and other chronic musculoskeletal conditions. ClinicalTrials.gov ID: NCT01490281.