AUTHOR=Arantes Flávia Sousa , Rosa Oliveira Vinicius , Leão Aime Karla Moraes , Afonso João Pedro Ribeiro , Fonseca Adriano Luis , Fonseca Daniela Rosana Pedro , Mello Diego Antonio C. Pina Gomes , Costa Ivan Peres , Oliveira Luiz Vicente Franco , da Palma Renata Kelly 

TITLE=Heart rate variability: A biomarker of frailty in older adults?

JOURNAL=Frontiers in Medicine

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2022.1008970

DOI=10.3389/fmed.2022.1008970

ISSN=2296-858X

ABSTRACT=<p>Frailty is a state of critical loss of physiological complexity resulting in greater vulnerability to stressors and has been characterized as a debility syndrome in the older adult. Changes in functional capacity and the cardiovascular system during aging are the most significant and relevant for this population, including the clinically healthy. In this sense, this review aims to investigate methods to monitor the performance of older adults, such as heart rate variability and verify how it can be related to frailty. It contributes to understanding that the changes in heart variability can be a marker for frailty in older adults.</p>