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Int J Sports Med 2022; 43(01): 61-67
DOI: 10.1055/a-1487-6628
Training & Testing

Effects of Aging on Hemodynamic Kinetics in Different Intensities of Dynamic Exercise

Matheus Borghi-Ricardo
1   Department of Mechanical Engineering,USP, Sao Paulo, Brazil
,
Rodrigo Polaquini Simões
2   Department of Physiotherapy, UFSCar, Sao Carlos, Brazil
,
Daniel Augusto Santos
3   Department of Physiotherapy, Cardiopulmonary Physiotherapy Laboratory, Nucleus of Research in Physical Exercise, Federal University of Sao Carlos, Sao Carlos, Brazil
,
Bruno Archiza
3   Department of Physiotherapy, Cardiopulmonary Physiotherapy Laboratory, Nucleus of Research in Physical Exercise, Federal University of Sao Carlos, Sao Carlos, Brazil
,
Audrey Borghi-Silva
2   Department of Physiotherapy, UFSCar, Sao Carlos, Brazil
› Author Affiliations Funding We also thank the Fundacão de Amparo à Pesquisa do Estado de Sao Paulo, Sao Paulo, Brazil (FAPESP 2015/26501-1) and CAPES PROEX (Coordenadoria de aperfeiçoamento de pessoal de Ensino superior, programas de Excelência). MBR and DAS are scientific iniciation student of FAPESP (Process n°19/03524-7 and 2013/06385-1). ABS is a Established Investigator (Level 1B) of Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil.
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Abstract

Healthy aging hemodynamics is known to exhibit a time-dependent loss of function. We aimed at verifying whether older men would have a slowed cardiac output and stroke volume dynamics in response to the onset (“on”) and on recovery (“off”) of exercise in comparison to young men. Twenty healthy active men (10 young and 10 older) were recruited. Participants performed an incremental cardiopulmonary exercise testing on a cycle ergometer, and on another day, 3 constant workload tests in different intensities. Compared to younger, older men exhibited a slower cardiac output and stroke volume dynamics in both on and off transients for all exercise intensities (all P < 0.05). During higher intensities, both younger and older men had slower hemodynamic kinetics compared to lower intensities (all P < 0.05). There was strong negative relationship between the time constant of cardiac output on-kinetics during high-intensity with maximal exercise performance in both groups (r = –0.88, P < 0.01). We interpret these findings to mean that healthy older men have slowed hemodynamic kinetics compared to younger, but this difference becomes less evident in higher intensities of exercise.

Key words

cardiovascular health - older adults - central hemodynamic - aging


Publication History

Article published online:
22 June 2021

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