title: Segmental fat-free and fat mass measurements by bioelectrical impedance analysis in 2,224 healthy Spanish women aged 18-85 years.
abstract: OBJECTIVE
  This study provides updated data on body composition in adult Spanish women.
  
  
  METHODS
  We considered data, including height and weight, from a survey conducted on a total of 4,013 adult women between 2009 and 2010. A subgroup of 2,224 women completed a bioelectrical body impedance analysis of body composition using a Tanita Body Composition Analyzer (Model no. BF-418).
  
  
  RESULTS
  Total fat mass (FM) gradually increased between 18 and 74 years of age and decreased thereafter. FM increased in both legs between 65 and 74 years of age (5.69 ± 1.4 Kg and 5.66 ± 1.4 Kg for right and left legs, respectively) and decreased thereafter. FM in the right arm increased until 44 years of age (1.22 ± 2.6 Kg), decreased to 1.19 ± 0.5 Kg between 45 and 54 years of age, and increased to 1.54 ± 0.63 from 65 to 74 years of age. FM in the left arm increased constantly until it reached a peak of 1.63 ± 0.6 Kg between 65 and 74 years of age and decreased thereafter. FM increased in the trunk throughout life (peaks at 13.27±3.8 Kg) until subjects reached between 65 and 74 years of age. Fat free mass increased until 44 years of age (42.42 ± 4.17 Kg) and decreased thereafter. The prevalence of overweight/obesity significantly increased with age in the entire sample.
  
  
  CONCLUSIONS
  Our results indicate that age-related increases in weight were at least partially due to increased adiposity.
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Juan D
authors.initials: JD
authors.lastname: Pedrera-Zamorano
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Raul
authors.initials: R
authors.lastname: Roncero-Martin
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Jesus M
authors.initials: JM
authors.lastname: Lavado-Garcia
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Julian F
authors.initials: JF
authors.lastname: Calderon-Garcia
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Purificacion
authors.initials: P
authors.lastname: Rey-Sanchez
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Vicente
authors.initials: V
authors.lastname: Vera
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Mariana
authors.initials: M
authors.lastname: Martinez
authors.affiliation: Metabolic Bone Diseases Research Group, Nursing Department, University of Extremadura, Caceres, Spain.
authors.forename: Jose M
authors.initials: JM
authors.lastname: Moran
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001823:Body Composition; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008875:Middle Aged; D010865:Pilot Projects; D013030:Spain; D055815:Young Adult