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Influence of the glycaemic index of an evening meal on substrate oxidation following breakfast and during exercise the next day in healthy women.
Eur J Clin Nutr. 2008 May; 62(5):608-16.EJ

Abstract

OBJECTIVE

To investigate whether the 'overnight second-meal effect' results in altered substrate oxidation during the postprandial period following breakfast and subsequent sub-maximal exercise in women.

SUBJECTS/METHODS

Seven recreationally active women were recruited for the study. In each trial, participants were provided with their evening meal on day 1, which was composed of either high glycaemic index (HGI) or low glycaemic index (LGI) carbohydrates (CHO). On day 2, participants were provided with a standard HGI breakfast and then performed a 60 min run at 65% \[V.]O(2 max) 3 h later.

RESULTS

The incremental area under the curve (IAUC) for plasma glucose concentrations during the postprandial period following breakfast was greater in the HGI trial compared to the LGI trial (P<0.01). Similarly, the IAUC for serum insulin concentrations was greater in the HGI trial than the LGI trial (P<0.05). No differences in plasma free-fatty acids (FFA) or plasma glycerol concentrations were found between trials during the postprandial period. During subsequent exercise, there were no significant differences in substrate metabolism.

CONCLUSION

The glycaemic index of an evening meal does not alter substrate oxidation at rest following breakfast or during subsequent submaximal exercise in women. This study provides further evidence for the overnight second-meal effect on glycaemic responses following a LGI mixed evening meal.

Authors+Show Affiliations

School of Psychology and Sports Sciences, Northumbria University, Newcastle upon Tyne, UK. e.stevenson@northumbria.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

17440522

Citation

Stevenson, E, et al. "Influence of the Glycaemic Index of an Evening Meal On Substrate Oxidation Following Breakfast and During Exercise the Next Day in Healthy Women." European Journal of Clinical Nutrition, vol. 62, no. 5, 2008, pp. 608-16.
Stevenson E, Williams C, Nute M, et al. Influence of the glycaemic index of an evening meal on substrate oxidation following breakfast and during exercise the next day in healthy women. Eur J Clin Nutr. 2008;62(5):608-16.
Stevenson, E., Williams, C., Nute, M., Humphrey, L., & Witard, O. (2008). Influence of the glycaemic index of an evening meal on substrate oxidation following breakfast and during exercise the next day in healthy women. European Journal of Clinical Nutrition, 62(5), 608-16.
Stevenson E, et al. Influence of the Glycaemic Index of an Evening Meal On Substrate Oxidation Following Breakfast and During Exercise the Next Day in Healthy Women. Eur J Clin Nutr. 2008;62(5):608-16. PubMed PMID: 17440522.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of the glycaemic index of an evening meal on substrate oxidation following breakfast and during exercise the next day in healthy women. AU - Stevenson,E, AU - Williams,C, AU - Nute,M, AU - Humphrey,L, AU - Witard,O, Y1 - 2007/04/18/ PY - 2007/4/19/pubmed PY - 2008/9/16/medline PY - 2007/4/19/entrez SP - 608 EP - 16 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 62 IS - 5 N2 - OBJECTIVE: To investigate whether the 'overnight second-meal effect' results in altered substrate oxidation during the postprandial period following breakfast and subsequent sub-maximal exercise in women. SUBJECTS/METHODS: Seven recreationally active women were recruited for the study. In each trial, participants were provided with their evening meal on day 1, which was composed of either high glycaemic index (HGI) or low glycaemic index (LGI) carbohydrates (CHO). On day 2, participants were provided with a standard HGI breakfast and then performed a 60 min run at 65% \[V.]O(2 max) 3 h later. RESULTS: The incremental area under the curve (IAUC) for plasma glucose concentrations during the postprandial period following breakfast was greater in the HGI trial compared to the LGI trial (P<0.01). Similarly, the IAUC for serum insulin concentrations was greater in the HGI trial than the LGI trial (P<0.05). No differences in plasma free-fatty acids (FFA) or plasma glycerol concentrations were found between trials during the postprandial period. During subsequent exercise, there were no significant differences in substrate metabolism. CONCLUSION: The glycaemic index of an evening meal does not alter substrate oxidation at rest following breakfast or during subsequent submaximal exercise in women. This study provides further evidence for the overnight second-meal effect on glycaemic responses following a LGI mixed evening meal. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/17440522/Influence_of_the_glycaemic_index_of_an_evening_meal_on_substrate_oxidation_following_breakfast_and_during_exercise_the_next_day_in_healthy_women_ L2 - https://doi.org/10.1038/sj.ejcn.1602759 DB - PRIME DP - Unbound Medicine ER -