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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Borghi-Ricardo, Matheus [1] ; Simoes, Rodrigo Polaquini [2] ; Santos, Daniel Augusto [3] ; Archiza, Bruno [3] ; Borghi-Silva, Audrey [2]
Total Authors: 5
[1] Univ Sao Paulo, Dept Mech Engn, Sao Paulo - Brazil
[2] Univ Fed Sao Carlos, Dept Physiotherapy, Rodovia Washington Luis Km 235, BR-13565905 Sao Carlos - Brazil
[3] Univ Fed Sao Carlos, Nucleus Res Phys Exercise, Dept Physiotherapy, Cardiopulm Physiotherapy Lab, Sao Carlos - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 43, n. 01, p. 61-67, JAN 2022.
Web of Science Citations: 0

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. (AU)

FAPESP's process: 15/26501-1 - Study of limiting factors to physical exercise and adjunct effects to rehabilitation on cardiorespiratory disease: a multicentre approach
Grantee:Audrey Borghi e Silva
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 19/03524-7 - Engineering design specification analysis through prototypes in a participatory design process of a portable ergometric step
Grantee:Matheus Borghi Ricardo de Oliveira
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 13/06385-1 - Analysis of the kinetic behavior of cardiac output and stroke volume during dynamic exercise at different intensities in healthy elderly and elderly with coronary artery disease
Grantee:Daniel Augusto dos Santos
Support Opportunities: Scholarships in Brazil - Scientific Initiation