Effect of chewing speed on energy expenditure in healthy subjects.

Objective: The aim of the study was to investigate the effect of rate of chewing on energy expenditure in human subjects.

Materials And Methods: Fourteen healthy subjects (aged 18-24 years) within the normal range of BMI participated in a cross-over experiment consisting of two 6-min sessions of gum chewing, slow (∼60 cycles/min) and fast (∼120 cycles/min) chewing. The resting energy expenditure (REE) and during gum chewing was measured using a ventilated hood connected to a gas analyzer system.