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

Autor(es)

Borghi-Ricardo, Matheus ^[1] ; Simoes, Rodrigo Polaquini ^[2] ; Santos, Daniel Augusto ^[3] ; Archiza, Bruno ^[3] ; Borghi-Silva, Audrey ^[2]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 43, n. 01, p. 61-67, JAN 2022.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 15/26501-1 - Estudo dos fatores limitantes ao exercício físico e efeitos dos recursos adjuntos à reabilitação nas doenças cardiorrespiratórias crônicas: uma abordagem multicêntrica
• Beneficiário: Audrey Borghi Silva
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/03524-7 - Análise de especificações de projeto de engenharia através de protótipos em processo de design participativo de um degrau ergométrico portátil
• Beneficiário: Matheus Borghi Ricardo de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 13/06385-1 - Análise do comportamento cinético do débito cardíaco e do volume sistólico durante o exercício físico dinâmico em diferentes intensidades em idosos saudáveis e idosos portadores de doença arterial coronariana
• Beneficiário: Daniel Augusto dos Santos
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica