Resumen: The aim was to analyze the effects of cardiorespiratory exercise and air pollution on cognition and cardiovascular markers in four groups of older women: the active/clean air group (AC), the active/polluted air group (AP), the sedentary/clean air group (SC), and the sedentary/polluted air group (SP). Active groups performed a training task based on progressive walking. Prior to and after the experiment, the following parameters were assessed: cognition, by Mini Mental State Examination (MMSE); maximum oxygen uptake (VO2max), estimated by the Six-Minute Walk Test (6mWT); heart rate (HR); and oxygen saturation (SpO2). There were significant differences (p < 0.05) between the AC and the SP in all the MMSE dimensions except “Registration”, and in all the physiological variables (VO2max, SpO2, HR). Aerobic exercise may be a protective factor against the effects that pollution have on cognition and on the mechanisms of oxygen transport. Idioma: Inglés DOI: 10.3390/ijerph16020245 Año: 2019 Publicado en: International Journal of Environmental Research and Public Health 16, 2 (2019), 245 [14 pp] ISSN: 1661-7827 Factor impacto JCR: 2.849 (2019) Categ. JCR: PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH rank: 32 / 170 = 0.188 (2019) - Q1 - T1 Categ. JCR: ENVIRONMENTAL SCIENCES rank: 105 / 265 = 0.396 (2019) - Q2 - T2 Categ. JCR: PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH rank: 58 / 193 = 0.301 (2019) - Q2 - T1 Factor impacto SCIMAGO: 0.739 - Health, Toxicology and Mutagenesis (Q2) - Public Health, Environmental and Occupational Health (Q2) - Pollution (Q2)