Fitness Assessment as an Anti-Aging Marker: A Narrative Review Amaro Gahete, Francisco José De la O Puerta, Alejandro Jurado Fasoli, Lucas Castillo, Manuel J. Gutiérrez Sáinz, Ángel Physical activity Cardiorespiratory fitness Muscular strength Aging Aging is a natural, physiological, and inevitable process, but it can be also influenced. Although aging is not a disease, it has several characteristics that could indicate so, such as a functional decline at different levels, which may determine clinical manifestations, and it is associated with several disease processes. Consequently, it is essential to create and adopt strategies to delay the aging process. Nowadays, any strategy adopted without including physical exercise seems inconceivable. Recent studies published in relation to this population have shown that the maintenance of acceptable levels of physical fitness is associated with the prevention of many of premature aging consequences, good rates of health, and quality of life of the person. cardiorespiratory fitness and muscular strength (as physical fitness components) are excellent life expectancy and quality of life predictors. Therefore, reaching a good fitness level is the most powerful clinical method to prevent and delay the aging process. Not only their years to live increase, but also their quality, with health and without diseases or mobility dependence. 2020-05-06T12:04:18Z 2020-05-06T12:04:18Z 2017-12-22 journal article Amaro-Gahete FJ, De-La-OA, Jurado-Fasoli L, Castillo MJ, Gutiérrez A (2017) Fitness Assessment as an Anti-Aging Marker: A Narrative Review. J Gerontol Geriatr Res 6: 455 http://hdl.handle.net/10481/61855 10.4172/2167-7182.1000455 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access Atribución-NoComercial-SinDerivadas 3.0 España OMICS Publishing Group