70649 20190220220033.0 doi 10.2196/mhealth.5193 sideral 106022 ART-2016-106022 eng Santos-Lozano, A. The Era of Smartphones: Back to Our Biological Makeup? 2016 Access copy available to the general public Unrestricted Physical inactivity is a major modifiable cardiovascular risk factor that has become a growing health problem in the 21st century: 83% of adolescents aged 13-15 years and approximately 1/3 of adults worldwide are inactive, that is, not meeting the minimum international physical activity (PA) recommendations (=150 minutes/week of moderate to vigorous PA) [1, 2]. Thus, the PA levels of the general population, especially of individuals at cardiovascular risk, should be routinely assessed by health care professionals, as it has been recently recommended by the American Heart Association [3]. To this end, accelerometers (usually attached to an elastic belt around the waist) allow objective quantification of PA by providing continuous recordings. At least 3 to 5 days of accelerometer monitoring (including weekend days) are required to determine habitual PA, and it is generally accepted that the device should be worn for =10 hours/day [4]. For this reason, the simple and inexpensive method of PA questionnaires is more widely used and generally better accepted. Unfortunately, the validity of self-reported PA is questionable... info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.636 2016 HEALTH CARE SCIENCES & SERVICES 7 / 90 = 0.078 2016 Q1 T1 info:eu-repo/semantics/other info:eu-repo/semantics/publishedVersion (orcid)0000-0001-8374-9081 Garatachea, N. Universidad de Zaragoza Pareja-Galeano, H. Fiuza-Luces, C. Sanchis-Gomar, F. Lucia, A. 1006 245 Universidad de Zaragoza Dpto. Fisiatría y Enfermería Área Educación Física y Depor. 4, 3 (2016), e63 [2 pp] JMIR mHealth uHealth JMIR mHealth and uHealth 2291-5222 323356 http://zaguan.unizar.es/record/70649/files/texto_completo.pdf Versión publicada 92320 http://zaguan.unizar.es/record/70649/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:70649 articulos driver 2019-01-31-14:38:56 ARTICLE