Does inhibitory dysfunction contribute to poor emotional aspect of eating behaviours in obesity? A study among a sample of young adults in Colombo District, Sri Lanka.

Background : Recent studies have suggested that poor inhibitory control can lead to poor emotional aspect of eating behaviour resulting in obesity. Considering this, a study was conducted to assess the association between obesity, inhibitory control and emotional aspect of eating behaviour among young adults in Colombo District, Sri Lanka. Methods: Young adults of age 21–25 years (n=231) were studied. Body Mass Index (BMI) and Waist to Hip Ratio (WHR) were calculated to assess the generalized and central obesity, while inhibitory control was assessed through number of incorrect responses in Stroop, Stop signal and Go/no-go tasks. The emotional aspect of eating behaviour was assessed via self-administered Three Factor Eating Questionnaire (Revised-18), which consists of three subscales; cognitive restraint, uncontrolled eating and emotional eating. Results: The mean age of the study sample was 23.4±1.4 years with males comprising 51.9%. There was a statistically significant group effect in mean incorrect responses of Stroop task and Stop signal task scores with normal, overweight and obese individuals (p > 0.05). A positive significant correlation was observed in mean incorrect responses of Stroop task with cognitive restraint subscale (r=0.238, p Conclusion: Poor inhibitory control with abnormal emotional aspect of eating despite cognitive restraint was seen in those with obesity.