title: Questionnaires for assessing physical activity in Spanish population: future research directions.
authors.forename: David
authors.initials: D
authors.lastname: Martínez-Gómez
authors.forename: Ascension
authors.initials: A
authors.lastname: Marcos
authors.forename: Oscar L
authors.initials: OL
authors.lastname: Veiga
mesh_terms: D000368:Aged; D035843:Biomedical Research / Q000639:trends; D005544:Forecasting; D006801:Humans; D008875:Middle Aged; D009043:Motor Activity; D013030:Spain; D011795:Surveys and Questionnaires / Q000592:standards*