Journal
EUROPEAN JOURNAL OF ORAL SCIENCES
Volume 127, Issue 1, Pages 40-44Publisher
WILEY
DOI: 10.1111/eos.12583
Keywords
chewing frequency; eating speed; food consumption; obesity
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Funding
- Faculty of Dentistry, Khon Kaen University
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Fast eating has been shown to increase the risk of overweight in both children and adults. The objectives of the present study were to investigate the correlation between chewing rate and the number of chews per mouthful and to evaluate if they were associated with the weight of meal intake. Thirty healthy subjects, aged 18-24 yr, ate a test lunch at their habitual speed until they felt satiated. The activities of masseter and suprahyoid muscles were recorded to determine the number of chews and the moment of swallowing. The weight of meal intake was recorded along with body mass index (BMI), chewing rate, number of chews per mouthful, meal duration, ingestion rate, hunger, and food preference levels. The mean weight (+/- SD) of meal intake, chewing rate, and number of chews per mouthful were 261.4 +/- 78.9 g, 94.4 +/- 13.5 chews min(-1), 19.2 +/- 6.4 chews per mouthful, respectively. Chewing rate was not correlated with the number of chews per mouthful. The multivariable linear regression showed that meal intake was significantly positively associated with chewing rate, meal duration, and BMI, but inversely associated with the number of chews per mouthful (adjusted R-2 = 0.42). It was concluded that the number of chews was not associated with chewing rate but meal intake was explained by both reduced number of chews and increased chewing rate.
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