Study on time-based variation of blood circulation index, pulse wave energy, and RAI of healthy adult men after different eating times

Abstract

BackgroundThe purpose of this study is to examine the effects of different eating times on blood circulation index, pulse wave energy (E), and radial augmentation index (RAI) of healthy adult men.MethodsBlood circulation index, E, and RAI were measured using a three-dimensional (3-D) pulse imaging system (3-D MAC) at before, right after, 30 minutes after, 1 hour after, and 2 hours after eating.ResultsIn the blood circulation index, heart rate (HR), estimated cardiac output (ECO), and estimated cardiac output index (ECI) increased significantly right after eating compared to before eating. By contrast, estimated circulation resistance (ECR) and estimated circulation resistance index (ECRI) decreased significantly right after eating compared to before eating. E had a tendency to increase right after eating compared to before eating and decrease gradually at every experimental point (left and right Chon, Kwan, and Cheok). RAI had a tendency to decrease right after eating compared to before eating and increase gradually at every experimental point.ConclusionsDifferent eating times can bring about changes on blood circulation index, E, and RAI. These changes show a certain tendency and coincide with the physiological factors that eating causes a rise of HR, an increase of systolic cardiac pump performance, and a reduction of peripheral vascular resistance.

Association of hypertension with physical factors of wrist pulse waves using a computational approach: a pilot study

“…To obtain scientific evidence for pulse diagnosis and the association between wrist pulse patterns and diseases, several recent studies have employed computational approaches [ 5 , 7 , 10 , 11 , 21 , 30 , 42 , 43 ]. For example, Dongyu et al [ 11 ] examined the prediction of diagnosis in gastritis and cholecystitis patients compared with healthy subjects using features extracted from wrist pulse signals.…”

“…They also argued that the computational approach was valuable for discovering future medical knowledge in TCM. Kim et al [ 42 ] examined the association between eating time and blood circulation and pulse wave energy in the Chon, Gwan, and Cheok positions of both wrists in healthy adult men based on computational analysis. They observed an increase in the pulse wave energy after meal consumption, followed by gradual decreases at all positions of both wrists.…”

Reliability of oscillometric central blood pressure and wave reflection readings

“…Similarly, black tea consumption acutely improves FMD, but this positive effect is lost with the addition of milk [45]. Although the postprandial condition has not been as widely studied with regard to AIx, the quantity and quality of fat and carbohydrate intake, as well as the timing of intake, have all be shown to influence AIx [19,20,46,47].…”