RT journal article T1 A new set of estimated cardiorespiratory fitness equations are associated with cognitive performance in older adults A1 Velázquez Díaz, Daniel A1 Cadenas-Sanchez, Cristina A1 Molina‑Guzmán, Flor Abril A1 Sáenz-Carrasco, Jesús Alfredo A1 González Rosa, Javier Jesús A1 Erickson, Kirk I. A1 Carbonell Baeza, Ana A1 Jiménez Pavón, David A2 Didáctica de la Educación FísicaPlástica y Musical A2 Psicología K1 Alzheimer K1 Cognitive impairment K1 Physical fitness K1 Aerobic capacity K1 Aging AB This study aimed to develop new equations to estimate cardiorespiratory fitness specifically for older adults and, secondly, to analyze the associations of cardiorespiratory fitness, both objectively measured and estimated using new equations, with cognitive performance. Ninety-two older adults (41 females, 65-75years) from baseline data of a randomized controlled trial were analyzed ("ClinicalTrials.gov" Identifier: NCT03923712). Participants completed 4 measurement sessions including (i) physiological and health indicators in a laboratory setting, (ii) field-based fitness tests, (iii) sociodemographic and physical activity questionnaires, and (iv) a battery of neuropsychological tests to evaluate cognitive performance. The main findings were as follows: (i) a set of new equations with good predictive value for estimated cardiorespiratory fitness were developed (74-87%), using different scenarios of complexity and/or equipment requirements, and (ii) higher estimated cardiorespiratory fitness, even using its simplest equation (eCRF=-1261.99+1.97*6min walking test (m)+1.12*bioimpedance basal metabolic rate (kcal/day)+5.25*basal heart rate (bpm)), was associated with better cognitive performance evaluated by several neuropsychological tests (i.e., language, cognitive flexibility, fluency, attention, and working memory), similar to using objectively measured cardiorespiratory fitness. In summary, a new set of estimated cardiorespiratory fitness equations have been developed with predictive values ranging from 74 to 87% that could be used based on necessity, availability of equipment, resources, or measurement context. Moreover, similar to objectively measured cardiorespiratory fitness, this measure of estimated cardiorespiratory fitness was positively associated with performance on language, fluency, cognitive flexibility, attention, and working memory, independently of sex, age, and education level.© 2023. The Author(s). PB SPRINGER SN 2509-2723 YR 2023 FD 2023 LK http://hdl.handle.net/10498/27958 UL http://hdl.handle.net/10498/27958 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 06-nov-2026