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Rate and extent of compensatory changes in energy intake and expenditure in response to altered exercise and diet composition in humans

Stubbs, R. James, Hughes, Darren A., Johnstone, Alexandra M., Whybrow, Stephen, Horgan, Graham W., King, Neil A., & Blundell, John E. (2004) Rate and extent of compensatory changes in energy intake and expenditure in response to altered exercise and diet composition in humans. American Journal of Physiology Regulatory: Integrative and Comparative Physiology, 286, R350-R358.

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Abstract

We assessed the effect of no exercise (Nex; control) and high exercise level (Hex; 4 MJ/day) and two dietary manipulations [a high-fat diet (HF; 50% of energy, 700 kJ/100 g) and low-fat diet (LF; 20% of energy, 300 kJ/100 g)] on compensatory changes in energy intake (EI) and energy expenditure (EE) over 7-day periods. Eight lean men were each studied four times in a 2 x 2 randomized design. EI was directly quantified by weight of food consumed. EE was assessed by heart rate (HR) monitoring. Body weight was measured daily. Mean daily EE was 17.6 and 11.5 MJ/day (P < 0.001) on the pooled Hex and Nex treatments, respectively. EI was higher on HF diets (13.4 MJ/day pooled) compared with the LF diets (9.0 MJ/day). Regression analysis showed that these energy imbalances induced significant compensatory changes in EB over time of 0.3-0.4 MJ/day (P < 0.05). These were due to changes in both EI and EE in the opposite direction to the perturbation in energy balance. These changes were significant, small but persistent, amounting to 0.2 and 0.35 MJ/day for EI and EE, respectively.

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ID Code: 8505
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see hypertext link) or contact the author. Author contact details: n.king@qut.edu.au
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Keywords: appetite, energy balance, high, fat diet, low, fat diet, feeding behavior
DOI: 10.1152/ajpregu.00196.2003
ISSN: 0363-6119, 1522-1490
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NUTRITION AND DIETETICS (111100) > Nutrition and Dietetics not elsewhere classified (111199)
Divisions: Current > Research Centres > Centre for Health Research
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2004 American Physiological Society
Deposited On: 09 Jul 2007
Last Modified: 29 Feb 2012 23:28

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