Effect of the Postural Challenge on the Dependence of the Cardiovascular Control Complexity on Age

Autor(es)

Catai, Aparecida M. ^[1] ; Takahashi, Anielle C. M. ^{[1, 2]} ; Perseguini, Natalia M. ^[1] ; Milan, Juliana C. ^[1] ; Minatel, Vinicius ^[1] ; Rehder-Santos, Patricia ^[1] ; Marchi, Andrea ^{[3, 4]} ; Bari, Vlasta ^[5] ; Porta, Alberto ^{[6, 7]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Physiotherapy, Cardiovasc Physiotherapy Lab, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Physiotherapy, Res Lab Hlth Aging, BR-13565905 Sao Carlos, SP - Brazil

^[3] Humanitas Clin & Res Ctr, Dept Anesthesia, I-20089 Rozzano - Italy

^[4] Humanitas Clin & Res Ctr, Intens Care Unit, I-20089 Rozzano - Italy

^[5] IRCCS Policlin San Donato, Dept Cardiothorac Vasc Anesthesia & Intens Care, I-20097 Milan - Italy

^[6] Univ Milan, Dept Biomed Sci Hlth, I-20161 Milan - Italy

^[7] IRCCS Galeazzi Orthoped Inst, I-20161 Milan - Italy

• Tipo de documento: Artigo Científico
• Fonte: Entropy; v. 16, n. 12, p. 6686-6704, DEC 2014.
• Citações Web of Science: 18

Resumo

Short-term complexity of heart period (HP) and systolic arterial pressure (SAP) was computed to detect age and gender influences over cardiovascular control in resting supine condition (REST) and during standing (STAND). Healthy subjects (n = 110, men = 55) were equally divided into five groups (21-30; 31-40; 41-50; 51-60; and 61-70 years of age). HP and SAP series were recorded for 15 min at REST and during STAND. A normalized complexity index (NCI) based on conditional entropy was assessed. At REST we found that both NCIHP and NCISAP decreased with age in the overall population, but only women were responsible for this trend. During STAND we observed that both NCIHP and NCISAP were unrelated to age in the overall population, even when divided by gender. When the variation of NCI in response to STAND (Delta NCI = NCI at REST-NCI during STAND) was computed individually, we found that Delta NCIHP progressively decreased with age in the overall population, and women were again responsible for this trend. Conversely,Delta NCISAP was unrelated to age and gender. This study stresses that the complexity of cardiovascular control and its ability to respond to stressors are more importantly lost with age in women than in men. (AU)

• Processo FAPESP: 10/52070-4 - Novas técnicas para avaliação das alterações das oscilações cardiovasculares com o envelhecimento
• Beneficiário: Aparecida Maria Catai
• Modalidade de apoio: Auxílio à Pesquisa - Regular