Participants answered socio-demographic questions and completed the revised Fibromyalgia Impact Questionnaire (FIQR) in the Spanish version [26 (link)], the Self-efficacy for Physical Activity Scale (SEPAS) [27 (link)], and the Activity Pattern Scale [28 (link)]. They also wore an ActiGraph (Pensacola, FL, USA) GT3X-BT accelerometer to evaluate their physical activity levels.
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