TY - JOUR T1 - Questionnaires for assessing physical activity in Spanish population: future research directions JO - Gaceta Sanitaria T2 - AU - Martínez-Gómez,David AU - Marcos,Ascension AU - Veiga,Óscar L. SN - 02139111 M3 - 10.1016/j.gaceta.2009.09.021 DO - 10.1016/j.gaceta.2009.09.021 UR - https://www.gacetasanitaria.org/es-questionnaires-for-assessing-physical-activity-articulo-S0213911110000683 ER -