Light, but not moderate or vigorous, physical activity is consistently associated with higher levels of positive psychology resources and outcomes in women with fibromyalgia: a cross-sectional study from the al-Ándalus project - Arrayas-Grajera, Manuel J; Estevez-Lopez, Fernando; Gavilan-Carrera, Blanca; Luque-Reca, Octavio; Carbonell-Baeza, Ana; Tornero-Quinones, Inmaculada (Rheumatology International, 2026)