Projects per year
Abstract
BACKGROUND: At rest, omission of breakfast lowers daily energy intake, but also lowers energy expenditure, attenuating any effect on energy balance. The effect of breakfast omission on energy balance when exercise is prescribed is unclear. OBJECTIVES: The aim of this study was to assess the effect on 24-h energy balance of omitting compared with consuming breakfast prior to exercise. METHODS: Twelve healthy physically active young men (age 23 ± 3 y, body mass index 23.6 ± 2.0 kg/m2) completed 3 trials in a randomized order (separated by >1 week): a breakfast of oats and milk (431 kcal; 65 g carbohydrate, 11 g fat, 19 g protein) followed by rest (BR); breakfast before exercise (BE; 60 min cycling at 50 % peak power output); and overnight fasting before exercise (FE). The 24-h energy intake was calculated based on the food consumed for breakfast, followed by an ad libitum lunch, snacks, and dinner. Indirect calorimetry with heart-rate accelerometry was used to measure substrate utilization and 24-h energy expenditure. A [6,6-2H2]glucose infusion was used to investigate tissue-specific carbohydrate utilization. RESULTS: The 24-h energy balance was -400 kcal (normalized 95% CI: -230, -571 kcal) for the FE trial; this was significantly lower than both the BR trial (492 kcal; normalized 95% CI: 332, 652 kcal) and the BE trial (7 kcal; normalized 95% CI: -153, 177 kcal; both P < 0.01 compared with FE). Plasma glucose utilization in FE (mainly representing liver glucose utilization) was positively correlated with energy intake compensation at lunch (r = 0.62, P = 0.03), suggesting liver carbohydrate plays a role in postexercise energy-balance regulation. CONCLUSIONS: Neither exercise energy expenditure nor restricted energy intake via breakfast omission were completely compensated for postexercise. In healthy men, pre-exercise breakfast omission creates a more negative daily energy balance and could therefore be a useful strategy to induce a short-term energy deficit. This trial was registered at clinicaltrials.gov as NCT02258399.
Original language | English |
---|---|
Pages (from-to) | 1326-1334 |
Number of pages | 9 |
Journal | Journal of Nutrition |
Volume | 149 |
Issue number | 8 |
Early online date | 10 Apr 2019 |
DOIs | |
Publication status | Published - 31 Aug 2019 |
Bibliographical note
Copyright © American Society for Nutrition 2019.Keywords
- breakfast
- carbohydrate; exercise
- energy balance; fasting; metabolism; physical activity; substrate metabolism
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Fingerprint
Dive into the research topics of 'Skipping breakfast before exercise creates a more negative 24-h energy balance: A randomized controlled trial in healthy physically active young men.'. Together they form a unique fingerprint.Projects
- 3 Finished
-
Mobilising Vitamin D Sequestered In Adipose Tissue In Humans
Thompson, D. (PI), Betts, J. (CoI) & Gonzalez, J. (CoI)
Biotechnology and Biological Sciences Research Council
11/10/18 → 10/01/23
Project: Research council
-
Role of Rab3 in Peripheral Tissue Insulin Resistance
Koumanov, F. (PI), Betts, J. (CoI), Gonzalez, J. (CoI), Thompson, D. (CoI) & Whitley, P. (CoI)
1/12/16 → 31/07/20
Project: Research council
Profiles
-
James Betts
- Department for Health - Professor
- Institute for Mathematical Innovation (IMI)
- Centre for Nutrition, Exercise and Metabolism (CNEM)
Person: Research & Teaching
-
Javier Gonzalez
- Department for Health - Professor
- Centre for Nutrition, Exercise and Metabolism (CNEM)
- Bath Institute for the Augmented Human
Person: Research & Teaching, Affiliate staff
-
Dylan Thompson
- Department for Health - Deputy Head of Department
- Milner Centre for Evolution
- Centre for Therapeutic Innovation
- Centre for Nutrition, Exercise and Metabolism (CNEM)
Person: Research & Teaching
Datasets
-
Dataset for 'Skipping breakfast before exercise creates a more negative 24-hour energy balance: A randomized controlled trial in healthy physically active young men'
Edinburgh, R. (Creator), Hengist, A. (Creator), Smith, H. (Creator), Travers, R. (Creator), Betts, J. (Creator), Thompson, D. (Creator), Walhin, J.-P. (Creator), Wallis, G. (Creator), Hamilton, D. L. (Creator), Stevenson, E. (Creator), Tipton, K. (Creator) & Gonzalez, J. (Creator), University of Bath, 10 Apr 2019
DOI: 10.15125/BATH-00610
Dataset