The number of chewing affects postprandial splanchnic blood flow (1131.8)

Abstract

The present study was to examine an effect of the number of chewing on postprandial splanchnic blood flow (BF). After baseline measurements, ten healthy normal‐weight subjects chewed 100‐kcal or 300‐kcal solid food as long and many times as they could before swallowing in S trial, while they swallowed the same but fractured food as fast as they could in R trial. Splanchnic BF values were calculated from the diameter and mean blood velocity in the celiac artery and superior mesenteric artery, which were recorded until 90 min after eating. The number of chewing was significantly greater in the S trials than the R trials (194±22 vs. 40±3 times in 100‐kcal trials; 702±108 vs. 137±15 times in 300‐kcal trials, respectively, P<0.05). Sums of postprandial both splanchnic BFs were significantly greater in S trials than in R trials (23±5 vs. ‐5±6 L / 90 min in 100‐kcal trials; 36±11 vs. 9±4 L / 90min in 300‐kcal trials, respectively, P<0.05). These findings suggest that the number of chewing affects the postprandial splanchnic blood flow.