Effect of the Postural Challenge on the Dependence of the Cardiovascular Control Complexity on Age
AbstractShort-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 (ΔNCI = NCI at REST-NCI during STAND) was computed individually, we found that ΔNCIHP progressively decreased with age in the overall population, and women were again responsible for this trend. Conversely, ΔNCISAP 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. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Catai, A.M.; Takahashi, A.C.; Perseguini, N.M.; Milan, J.C.; Minatel, V.; Rehder-Santos, P.; Marchi, A.; Bari, V.; Porta, A. Effect of the Postural Challenge on the Dependence of the Cardiovascular Control Complexity on Age. Entropy 2014, 16, 6686-6704.
Catai AM, Takahashi AC, Perseguini NM, Milan JC, Minatel V, Rehder-Santos P, Marchi A, Bari V, Porta A. Effect of the Postural Challenge on the Dependence of the Cardiovascular Control Complexity on Age. Entropy. 2014; 16(12):6686-6704.Chicago/Turabian Style
Catai, Aparecida M.; Takahashi, Anielle C.; Perseguini, Natália M.; Milan, Juliana C.; Minatel, Vinicius; Rehder-Santos, Patrícia; Marchi, Andrea; Bari, Vlasta; Porta, Alberto. 2014. "Effect of the Postural Challenge on the Dependence of the Cardiovascular Control Complexity on Age." Entropy 16, no. 12: 6686-6704.