title: [Validation of a Spanish Short Version of the Minnesota Leisure Time Physical Activity Questionnaire (VREM)].
abstract: BACKGROUND
  The aim of this study is to develop and validate a shorter version (VREM) of the Spanish version of the Minnesota leisure time Physical Activity Questionnaire (CAFM), in order to have a shorter physical activity questionnaire to be used in Primary Care.
  
  
  METHODS
  Descriptive study of validation of a new physical activity measurement questionnaire. 200 patients older than 50, who visited one of 5 primary care centers in Barcelona for any reason were selected, with age-sex Catalonia's distribution. Two phases: first, VREM construction through items reduction. Second, validity of VREM against CAFM (gold standard) and test-retest reliability of VREM were analyzed, using kappa index and the intraclass correlation coefficient (ICC).
  
  
  RESULTS
  6 items were included in the VREM: Walking, Gardening, Sport/dancing, Climbing stairs, Shopping walking and Cleaning house. The interview using VREM lasted 5 minutes (standard deviation 2). Agreement between both questionnaires, using 4 levels of physical activity, was 95.5% (kappa=0.93). Test-retest reliability of the questionnaire was 92.5% (kappa=0.88). Using a continuous outcome in metabolic energy turnover (MET), VREM also proved to be valid and reliable (ICC=0.95 and ICC=0.96 respectively).
  
  
  CONCLUSIONS
  This short version of CAFM has shown good validity and reliability in people ≥50 years.
authors.affiliation: Centre d´Atenció Primària Sant Joan de Vilatorrada, Institut Catalá de la Salut (ICS), Sant Joan de Vilatorrada, Barcelona, España. annaruizcom@gmail.com
authors.forename: Anna
authors.initials: A
authors.lastname: Ruiz Comellas
authors.forename: Guillem
authors.initials: G
authors.lastname: Pera
authors.forename: José Miguel
authors.initials: JM
authors.lastname: Baena Díez
authors.forename: Xavier
authors.initials: X
authors.lastname: Mundet Tudurí
authors.forename: Teresa
authors.initials: T
authors.lastname: Alzamora Sas
authors.forename: Roberto
authors.initials: R
authors.lastname: Elosua
authors.forename: Pere
authors.initials: P
authors.lastname: Torán Monserrat
authors.forename: Antonio
authors.initials: A
authors.lastname: Heras
authors.forename: Rosa
authors.initials: R
authors.lastname: Forés Raurell
authors.forename: Montserrat
authors.initials: M
authors.lastname: Fusté Gamisans
authors.forename: Meritxell
authors.initials: M
authors.lastname: Fàbrega Camprubí
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007802:Language; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D009043:Motor Activity; D015203:Reproducibility of Results; D018401:Sample Size; D013030:Spain; D011795:Surveys and Questionnaires; D016138:Walking