Authors:
Yoko Hirohashi
;
Masaki Chiba
;
Sang-jae Lee
and
Atsuko Umezawa
Affiliation:
Nayoro City University, Japan
Keyword(s):
Food Intake, Finger Plethysmograms, Non Liner Analysis, LLE, Autonomic Nerve Balance.
Abstract:
The purpose of this manner of research was to investigate the influence of food intake on the human body, by means of data showing the chaotic fluctuations of fingertip pulse wave, through the use of nonlinear analysis. For the measurement of the fingertip pulse wave, 5 types of meals were utilized, using both meals where a single person ate alone with no conversation, and meals where several persons ate and conversed, using water, hot soup, and cold soup, measurements were taken at various times (just before food intake, just after food intake, and 30 minutes after food intake). At result, with meal intake, there was a temporary and significant drop in LLE levels, followed by a rise in LLE when several persons ate and conversed. Most of the participants saw little change in levels after intake of cold soup, or water. With intake of hot soup, it was observed that a little climb in LLE levels 30 minutes after eating. Many people increased levels from heat stimulation of the sympatheti
c nerve, then afterward a decrease, and there is speculation that there is a kind of “relaxation effect”. It seems evident that partaking of warm food while in the company is a good practice.
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