title: Ageing influence in the evolution of strength and muscle mass in women with fibromyalgia: the al-Ándalus project.
abstract: Fibromyalgia is associated with physical disabilities in daily activities. Moreover, patients with fibromyalgia present similar levels of functional capacity and physical condition than elderly people. The aim of this study was to analyse the evolution of strength and muscle mass in women with fibromyalgia along ageing. A total sample of 492 fibromyalgia patients and 279 healthy control women were included in the study. Participants in each group were further divided into four age subgroups: subgroup 1: 30-39 years old, subgroup 2: 40-49 years old, subgroup 3: 50-59 years old and subgroup 4: 60-69 years old. Standardized field-based fitness tests were used to assess muscle strength (30-s chair stand, handgrip strength and arm curl tests). Fibromyalgia patients did not show impairment on muscle mass along ageing, without values of skeletal muscle mass index below 6.76 kg/m(2) in any group. However, in all variables of muscle strength, the fibromyalgia group showed less strength than the healthy group (p < 0.05) for all age groups. As expected, handgrip strength test showed differences along ageing only in the fibromyalgia group (p < 0.001). Age was inversely associated with skeletal muscle mass (r = -0.155, p < 0.01) and handgrip strength (r = -0.230, p < 0.001) in the FM group. Women with fibromyalgia showed a reduction in muscle strength along ageing process, with significantly lower scores than healthy women for each age group, representing a risk of dynapenia.
authors.affiliation: Department of Didactics of Musical, Plastic and Corporal, University of Jaen, Avenida Chiclana de la Frontera Úbeda, 23400, Jaén, España, Spain, platorre@ujaen.es.
authors.forename: Pedro Ángel
authors.initials: PÁ
authors.lastname: Latorre-Román
authors.forename: Víctor
authors.initials: V
authors.lastname: Segura-Jiménez
authors.forename: Virginia A
authors.initials: VA
authors.lastname: Aparicio
authors.forename: María Aparecida
authors.initials: MA
authors.lastname: Santos E Campos
authors.forename: Felipe
authors.initials: F
authors.lastname: García-Pinillos
authors.forename: Manuel
authors.initials: M
authors.lastname: Herrador-Colmenero
authors.forename: Inmaculada C
authors.initials: IC
authors.lastname: Álvarez-Gallardo
authors.forename: Manuel
authors.initials: M
authors.lastname: Delgado-Fernández
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D001823:Body Composition; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis / Q000503:physiopathology*; D018737:Hand Strength; D006801:Humans; D008875:Middle Aged; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000473:pathology / Q000503:physiopathology*; D012307:Risk Factors; D013030:Spain; D011795:Surveys and Questionnaires