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Control of Eating Behavior Using a Novel Feedback System
Published on: May 8, 2018
Acute effects of knowledge-based work on feeding behavior and energy intake
Jean-Philippe Chaput1, Angelo Tremblay
1Division of Kinesiology (PEPS), Department of Social and Preventive Medicine, Faculty of Medicine, Laval University, Sainte-Foy, Québec, Canada G1K 7P4.
Physiology & Behavior
|October 7, 2006
Summary
Engaging in knowledge-based work (KBW) significantly increases spontaneous energy intake compared to rest. This mental exertion may contribute to a positive energy balance, even without increased physical activity.
Area of Science:
- Nutrition Science
- Behavioral Science
- Human Physiology
Background:
- Knowledge-based work (KBW) is increasingly prevalent, yet its impact on feeding behavior and energy balance remains under-explored.
- Understanding how cognitive tasks influence energy intake is crucial for public health and weight management strategies.
Purpose of the Study:
- To investigate the effect of knowledge-based work (KBW) on spontaneous energy intake and feeding behavior.
- To compare energy intake and appetite regulation following a cognitive task versus passive rest.
Main Methods:
- A within-subjects design with 15 healthy female students performing a cognitive task (KBW) or rest, followed by an ad libitum buffet meal.
- Measurements included energy expenditure, heart rate, blood pressure, food intake, appetite markers, and questionnaires (TFEQ, STAI).
Main Results:
- KBW significantly increased ad libitum energy intake by 959 kJ compared to rest (p < 0.01).
- Absolute intake of all macronutrients increased post-KBW, but preferences remained similar.
- No significant changes in appetite markers were observed, despite increased consumption.
Conclusions:
- Mental work associated with KBW can lead to higher spontaneous energy intake.
- KBW may represent a novel contributor to sedentariness, potentially exacerbating positive energy balance and weight gain.
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