Introduction
CRF
CRF
Life expectancy of the population around the world is increasing, especially in developed countries; thus, addressing the aging of the population pyramid has become an issue of global concern [CRF is the gold standard for exercise capacity [Nevertheless, few studies have developed equations to predict CRF in older people. The limited existing evidence has shown that these equations overestimate CRF [Previous literature has shown positive associations of objectively measured CRF with brain health in older adults [Therefore, the aims of this study were (i) to analyze the accuracy of existing equations in predicting CRF in older adults and to develop new equations to predict CRF (eCRF) in this specific population group and (ii) to analyze the associations of CRF (objectively measured by a laboratory-based test, and estimated by the equations) with a complete set of cognitive performance tests (i.e., screening to cognitive status, language, memory, cognitive flexibility, fluency, inhibition, attention, and working memory).