title: Does body composition differ between fibromyalgia patients and controls? the al-Ándalus project.
abstract: OBJECTIVE
  To characterise the anthropometric and body composition profile of a sample of fibromyalgia women and men from southern Spain and compare them with non-fibromyalgia controls.
  
  
  METHODS
  The cross-sectional study comprised 566 (51.9 ± 8.3 years) fibromyalgia women vs. 249 (49.3 ± 9.9 years) control women; and 24 (47.0 ± 8.4 years) fibromyalgia men vs. 56 (49.7 ± 11.5 years) control men. Body composition and cardiorespiratory fitness were assessed by means of a bioelectric impedanciometer and the 6-minute walk test, respectively.
  
  
  RESULTS
  All body composition para-meters (except muscle mass) differed between fibromyalgia and control women (all, p<0.01) even after controlling for several key variables (all, p<0.05). The effect sizes observed were small-medium. When cardiorespiratory fitness was included as covariate, body composition was no longer different between the women study groups. No differences in body composition were observed between fibromyalgia and control men (all, p>0.05). Weight status differed between women groups, with 11% lower normal-weight and 17% higher obesity prevalence for the fibromyalgia women group (p<0.001), but not between men groups (p=0.711). Seventy-two percent of the fibromyalgia women and 79% of the fibromyalgia men were overweight-obese. Sixty-one percent of the control women and 83% of the control men were overweight-obese.
  
  
  CONCLUSIONS
  Obesity is a greater common condition among fibromyalgia women compared to their counterparts from southern Spain, which might be explained by lower levels of cardiorespiratory fitness in fibromyalgia. However, fibromyalgia and control men do not differ on either body composition or weight status, in spite of the lower cardiorespiratory fitness found in the fibromyalgia men group.
authors: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors: Victor
authors: V
authors: Segura-Jimenez
authors: Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain.
authors: Virginia A
authors: VA
authors: Aparicio
authors: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors: Inmaculata C
authors: IC
authors: Alvarez-Gallardo
authors: Department of Physical Education, Faculty of Education Sciences, University of Cádiz, Cádiz, Spain.
authors: Ana
authors: A
authors: Carbonell-Baeza
authors: Department of Physical Education, Music and Arts, Faculty of Sciences Education, University of Huelva, Huelva, Spain.
authors: Inmaculada
authors: I
authors: Tornero-Quinones
authors: Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors: Manuel
authors: M
authors: Delgado-Fernandez
mesh_terms: D050154:Adiposity; D000328:Adult; D000886:Anthropometry; D001823:Body Composition; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005080:Exercise Test; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology; D010809:Physical Fitness; D011237:Predictive Value of Tests; D012737:Sex Factors; D013030:Spain / Q000453:epidemiology