Reproducibility of twenty-four hour post exercise changes in energy intake in overweight and obese women using current methodology

Brown, G., Lean, M.E.J. and Hankey, C.R. (2012) Reproducibility of twenty-four hour post exercise changes in energy intake in overweight and obese women using current methodology. British Journal of Nutrition, 108(02), pp. 191-194. (doi: 10.1017/S0007114511005575)

Abstract

Direct observation(s) of energy intake (EI) via buffet meals served in the laboratory are often carried out within short-term exercise intervention studies. The reproducibility of values obtained has not been assessed either under resting control conditions or post-exercise, in overweight and obese females. A total of fourteen sedentary, pre-menopausal females (BMI 30·0 (sd 5·1) kg/m2) completed four trials; two exercise and two control. Each trial lasted 24 h spanning over 2 d; conducted from afternoon on day 1 and morning on day 2. An exercise session to expend 1·65 MJ was completed on day 1 of exercise trials, and three buffet meals were served during each trial. Reproducibility of post-exercise changes in energy and macronutrient intakes was assessed at each individual buffet meal by intraclass correlation coefficient (ri). Only the ri values for post-exercise changes in energy (ri 0·44 (95 % CI − 0·03, 0·77), P = 0·03) and fat intake (ri 0·51 (95 % CI 0·04, 0·81), P = 0·02) at the lunch buffet meal achieved statistical significance; however, these ri values were weak and had large associated 95 % CI, which indicates a large degree of variability associated with these measurements. Energy and macronutrient intakes at the breakfast and evening buffet meals were not reproducible. This study concludes that the frequently used laboratory-based buffet meal method of assessing EI does not produce reliable, reproducible post-exercise changes in EI in overweight and obese women.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lean, Professor Michael and Hankey, Dr Catherine
• Authors: Brown, G., Lean, M.E.J., and Hankey, C.R.
• College/School: College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
• Journal Name: British Journal of Nutrition
• Journal Abbr.: Brit. J. Nutr.
• Publisher: Cambridge University Press
• ISSN: 0007-1145
• ISSN (Online): 1475-2662
• Published Online: 11 October 2011