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[Validation of a Spanish Short Version of the Minnesota Leisure Time Physical Activity Questionnaire (VREM)]
Anna Ruiz Comellas1, Guillem Pera, José Miguel Baena Díez
1Centre d´Atenció Primària Sant Joan de Vilatorrada, Institut Catalá de la Salut (ICS), Sant Joan de Vilatorrada, Barcelona, España. annaruizcom@gmail.com
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).
Conclusion:
This short version of CAFM has shown good validity and reliability in people ≥50 years.
