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Fat oxidation during exercise and satiety during recovery are increased following a low-glycemic index breakfast in sedentary women.
J Nutr 2009; 139(5):890-7JN

Abstract

Consuming low-glycemic index (LGI) carbohydrates (CHO) before endurance exercise results in increased fat oxidation during exercise in trained men and women. It is not known if this phenomenon occurs during low intensity exercise and in untrained participants. We examined the effects of breakfasts containing high-GI (HGI) or LGI foods on substrate utilization during rest and walking exercise in sedentary women. The metabolic and appetite responses to a standard lunch consumed after exercise were also investigated. Eight healthy sedentary women completed 2 trials. On each occasion, participants were provided with a HGI or LGI breakfast 3 h before walking for 60 min. Following exercise, participants were provided with lunch and remained in the laboratory for a further 2 h. Plasma glucose and serum insulin responses (area under the curve) were higher following the HGI breakfast than following the LGI breakfast (P < 0.05). During the 3-h postprandial period, fat oxidation was suppressed following both breakfasts but remained higher in the LGI trial (P < 0.05). During exercise, total fat oxidation was also greater in the LGI trial (P < 0.001). There were no differences in the metabolic responses to lunch. Participants reported feeling fuller following lunch in the LGI trial (P < 0.05). Consuming a LGI breakfast increases fat oxidation during subsequent exercise and improves satiety during recovery in sedentary females.

Authors+Show Affiliations

School of Biomedical Sciences, University of Nottingham, Nottingham NG 7 2UH, UK. e.stevenson@unn.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19321590

Citation

Stevenson, Emma J., et al. "Fat Oxidation During Exercise and Satiety During Recovery Are Increased Following a Low-glycemic Index Breakfast in Sedentary Women." The Journal of Nutrition, vol. 139, no. 5, 2009, pp. 890-7.
Stevenson EJ, Astbury NM, Simpson EJ, et al. Fat oxidation during exercise and satiety during recovery are increased following a low-glycemic index breakfast in sedentary women. J Nutr. 2009;139(5):890-7.
Stevenson, E. J., Astbury, N. M., Simpson, E. J., Taylor, M. A., & Macdonald, I. A. (2009). Fat oxidation during exercise and satiety during recovery are increased following a low-glycemic index breakfast in sedentary women. The Journal of Nutrition, 139(5), pp. 890-7. doi:10.3945/jn.108.101956.
Stevenson EJ, et al. Fat Oxidation During Exercise and Satiety During Recovery Are Increased Following a Low-glycemic Index Breakfast in Sedentary Women. J Nutr. 2009;139(5):890-7. PubMed PMID: 19321590.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fat oxidation during exercise and satiety during recovery are increased following a low-glycemic index breakfast in sedentary women. AU - Stevenson,Emma J, AU - Astbury,Nerys M, AU - Simpson,Elizabeth J, AU - Taylor,Moira A, AU - Macdonald,Ian A, Y1 - 2009/03/25/ PY - 2009/3/27/entrez PY - 2009/3/27/pubmed PY - 2009/5/2/medline SP - 890 EP - 7 JF - The Journal of nutrition JO - J. Nutr. VL - 139 IS - 5 N2 - Consuming low-glycemic index (LGI) carbohydrates (CHO) before endurance exercise results in increased fat oxidation during exercise in trained men and women. It is not known if this phenomenon occurs during low intensity exercise and in untrained participants. We examined the effects of breakfasts containing high-GI (HGI) or LGI foods on substrate utilization during rest and walking exercise in sedentary women. The metabolic and appetite responses to a standard lunch consumed after exercise were also investigated. Eight healthy sedentary women completed 2 trials. On each occasion, participants were provided with a HGI or LGI breakfast 3 h before walking for 60 min. Following exercise, participants were provided with lunch and remained in the laboratory for a further 2 h. Plasma glucose and serum insulin responses (area under the curve) were higher following the HGI breakfast than following the LGI breakfast (P < 0.05). During the 3-h postprandial period, fat oxidation was suppressed following both breakfasts but remained higher in the LGI trial (P < 0.05). During exercise, total fat oxidation was also greater in the LGI trial (P < 0.001). There were no differences in the metabolic responses to lunch. Participants reported feeling fuller following lunch in the LGI trial (P < 0.05). Consuming a LGI breakfast increases fat oxidation during subsequent exercise and improves satiety during recovery in sedentary females. SN - 1541-6100 UR - https://www.unboundmedicine.com/medline/citation/19321590/Fat_oxidation_during_exercise_and_satiety_during_recovery_are_increased_following_a_low_glycemic_index_breakfast_in_sedentary_women_ L2 - https://academic.oup.com/jn/article-lookup/doi/10.3945/jn.108.101956 DB - PRIME DP - Unbound Medicine ER -