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

Matheus Borghi-Ricardo; Rodrigo Polaquini Simões; Daniel Augusto Santos; Bruno Archiza; Audrey Borghi-Silva

doi:10.1055/a-1487-6628

International Journal of Sports Medicine, Table of Contents

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

¹Department of Mechanical Engineering,USP, Sao Paulo, Brazil

,

Rodrigo Polaquini Simões

²Department of Physiotherapy, UFSCar, Sao Carlos, Brazil

,

Daniel Augusto Santos

³Department of Physiotherapy, Cardiopulmonary Physiotherapy Laboratory, Nucleus of Research in Physical Exercise, Federal University of Sao Carlos, Sao Carlos, Brazil

,

Bruno Archiza

³Department of Physiotherapy, Cardiopulmonary Physiotherapy Laboratory, Nucleus of Research in Physical Exercise, Federal University of Sao Carlos, Sao Carlos, Brazil

,

Audrey Borghi-Silva

²Department of Physiotherapy, UFSCar, Sao Carlos, Brazil

› Author Affiliations

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

Full Text

References

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