title: [Physical fitness evolution in octogenarian population and its relationship with a sedentary lifestyle].
abstract: OBJECTIVE
  The aim of this study was to determine the changes in physical fitness over two years of following up in octogenarian people and to check whether a sedentary lifestyle modify these variations.
  
  
  METHODS
  Physical fitness of 182 subject (48 men, 134 women) with a mean age of 82,3 ± 2,3 years were evaluated using 8 different tests. A repeated measures analysis was carried out to see the differences between the two evaluation periods and to see the physical fitness differences between sedentary people (sit ≥ 4 hours/day) and non sedentary people (sit < 4 hours/day).
  
  
  RESULTS
  Between the two evaluation periods, we found a significant decrease in the agility test (p < 0.05), walking speed (p < 0.01) and endurance (p < 0.01). In relation to the subjects who spent sitting 4 hours/day there was a decrease in the walking speed test between the two evaluations (p < 0.05). Moreover, there was a decrease of walking speed and endurance between the two evaluation periods in both sedentary and nonsedentary people (p < 0.05).
  
  
  CONCLUSIONS
  In two years of following up, there are adverse changes in the level of physical fitness in octogenarians. Long periods of sitting time may translate into a loss of agility. Walking speed and endurance seem to be the components of physical fitness more affected by the ageing process in this population; and this loss is not determined by the hours of sitting per day.
authors.affiliation: Grupo de Investigación GENUD Toledo. Universidad de Castilla La Mancha. España.. agomez@unizar.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Muñoz-Arribas
authors.affiliation: Grupo de Investigación GENUD Toledo. Universidad de Castilla La Mancha. España..
authors.forename: Sara
authors.initials: S
authors.lastname: Vila-Maldonado
authors.affiliation: Grupo de investigación ImFINE. Departamento de Salud y Rendimiento Humano. Universidad Politécnica de Madrid. España..
authors.forename: Raquel
authors.initials: R
authors.lastname: Pedrero-Chamizo
authors.affiliation: Unidad de Medicina del Deporte. Cabildo Gran Canaria. España..
authors.forename: Luis
authors.initials: L
authors.lastname: Espino
authors.affiliation: Facultad de Ciencias del Deporte. Universidad de Extremadura. España..
authors.forename: Narcis
authors.initials: N
authors.lastname: Gusi
authors.affiliation: Instituto de Biomedicina (IBIOMED). Universidad de León. España..
authors.forename: Gerardo
authors.initials: G
authors.lastname: Villa
authors.affiliation: Grupo de investigación ImFINE. Departamento de Salud y Rendimiento Humano. Universidad Politécnica de Madrid. España..
authors.forename: Marcela
authors.initials: M
authors.lastname: Gonzalez-Gross
authors.affiliation: Grupo de Investigación GENUD. Universidad de Zaragoza. España..
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Casajús
authors.affiliation: Grupo de Investigación GENUD Toledo. Universidad de Castilla La Mancha. España. Grupo de Investigación GENUD. Universidad de Zaragoza. España..
authors.forename: Ignacio
authors.initials: I
authors.lastname: Ara
authors.affiliation: Grupo de Investigación GENUD. Universidad de Zaragoza. España. Centro Universitario de la Defensa. Zaragoza. España.. agomez@unizar.es.
authors.forename: Alba
authors.initials: A
authors.lastname: Gómez-Cabello
mesh_terms: D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010809:Physical Fitness / Q000502:physiology*; D057185:Sedentary Behavior; D016138:Walking / Q000502:physiology