Nonlinear dynamics of cardiovascular ageing

TL;DR: The increased ΔSpO2 in trained groups during muscle contraction may be due to lower microvascular O2 pressure, and the lower median frequency for the TE group indicates that tissue oxygenation oscillation significantly trended toward low-frequency oscillation, possibly resulting from the enhancement of vascular function.

TL;DR: The obtained results indicate that fractal nature of LDF signals is less in diabetic subjects compared to the healthy control, and the wavelet analysis carried out on the set of signals reveals the dynamics of blood flow which may have led to the difference in correlation results.

TL;DR: This study investigates the impact of night shift work on heart rate variability (HRV) in a matched age- and gender-controlled group, finding no significant differences between night shift workers and non-night shift workers, challenging previous assumptions about the effects of long-term shift work on HRV.

TL;DR: The comparison of two treatments generally falls into one of the following two categories: (a) a number of replications for each of the two treatments, which are unpaired, or (b) we may have a series of paired comparisons, some of which may be positive and some negative as mentioned in this paper.

TL;DR: It is demonstrated that relaxation of isolated preparations of rabbit thoracic aorta and other blood vessels by ACh requires the presence of endothelial cells, and that ACh, acting on muscarinic receptors of these cells, stimulates release of a substance(s) that causes relaxation of the vascular smooth muscle.