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No effect of a diet with a reduced glycaemic index on satiety, energy intake and body weight in overweight and obese women.

Abstract

OBJECTIVE

To investigate whether a diet with a reduced glycaemic index (GI) has effects on appetite, energy intake, body weight and composition in overweight and obese female subjects.

DESIGN

Randomized crossover intervention study including two consecutive 12-week periods. Lower or higher GI versions of key carbohydrate-rich foods (breads, breakfast cereals, rice and pasta/potatoes) were provided to subjects to be incorporated into habitual diets in ad libitum quantities. Foods intended as equivalents to each other were balanced in macronutrient composition, fibre content and energy density.

SUBJECTS

Nineteen overweight and obese women, weight-stable, with moderate hyperinsulinaemia (age: 34-65 years, body mass index: 25-47 kg m(-2), fasting insulin: 49-156 pmol l(-1)).

MEASUREMENTS

Dietary intake, body weight and composition after each 12-week intervention. Subjectively rated appetite and short-term ad libitum energy intake at a snack and lunch meal following fixed lower and higher GI test breakfasts (GI 52 vs 64) in a laboratory setting.

RESULTS

Free-living diets differed in GI by 8.4 units (55.5 vs 63.9), with key foods providing 48% of carbohydrate intake during both periods. There were no differences in energy intake, body weight or body composition between treatments. On laboratory investigation days, there were no differences in subjective ratings of hunger or fullness, or in energy intake at the snack or lunch meal.

CONCLUSION

This study provides no evidence to support an effect of a reduced GI diet on satiety, energy intake or body weight in overweight/obese women. Claims that the GI of the diet per se may have specific effects on body weight may therefore be misleading.

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  • Authors+Show Affiliations

    ,

    MRC Human Nutrition Research, Elsie Widdowson Laboratory, Cambridge, UK. Louise.Aston@mrc-hnr.cam.ac.uk

    ,

    Source

    MeSH

    Absorptiometry, Photon
    Adult
    Aged
    Appetite
    Body Mass Index
    Body Weight
    Cross-Over Studies
    Diet, Reducing
    Dietary Carbohydrates
    Energy Intake
    Female
    Glycemic Index
    Humans
    Middle Aged
    Obesity
    Overweight
    Satiation

    Pub Type(s)

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

    Language

    eng

    PubMed ID

    17923862

    Citation

    Aston, L M., et al. "No Effect of a Diet With a Reduced Glycaemic Index On Satiety, Energy Intake and Body Weight in Overweight and Obese Women." International Journal of Obesity (2005), vol. 32, no. 1, 2008, pp. 160-5.
    Aston LM, Stokes CS, Jebb SA. No effect of a diet with a reduced glycaemic index on satiety, energy intake and body weight in overweight and obese women. Int J Obes (Lond). 2008;32(1):160-5.
    Aston, L. M., Stokes, C. S., & Jebb, S. A. (2008). No effect of a diet with a reduced glycaemic index on satiety, energy intake and body weight in overweight and obese women. International Journal of Obesity (2005), 32(1), pp. 160-5.
    Aston LM, Stokes CS, Jebb SA. No Effect of a Diet With a Reduced Glycaemic Index On Satiety, Energy Intake and Body Weight in Overweight and Obese Women. Int J Obes (Lond). 2008;32(1):160-5. PubMed PMID: 17923862.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - No effect of a diet with a reduced glycaemic index on satiety, energy intake and body weight in overweight and obese women. AU - Aston,L M, AU - Stokes,C S, AU - Jebb,S A, Y1 - 2007/10/09/ PY - 2007/10/10/pubmed PY - 2008/5/14/medline PY - 2007/10/10/entrez SP - 160 EP - 5 JF - International journal of obesity (2005) JO - Int J Obes (Lond) VL - 32 IS - 1 N2 - OBJECTIVE: To investigate whether a diet with a reduced glycaemic index (GI) has effects on appetite, energy intake, body weight and composition in overweight and obese female subjects. DESIGN: Randomized crossover intervention study including two consecutive 12-week periods. Lower or higher GI versions of key carbohydrate-rich foods (breads, breakfast cereals, rice and pasta/potatoes) were provided to subjects to be incorporated into habitual diets in ad libitum quantities. Foods intended as equivalents to each other were balanced in macronutrient composition, fibre content and energy density. SUBJECTS: Nineteen overweight and obese women, weight-stable, with moderate hyperinsulinaemia (age: 34-65 years, body mass index: 25-47 kg m(-2), fasting insulin: 49-156 pmol l(-1)). MEASUREMENTS: Dietary intake, body weight and composition after each 12-week intervention. Subjectively rated appetite and short-term ad libitum energy intake at a snack and lunch meal following fixed lower and higher GI test breakfasts (GI 52 vs 64) in a laboratory setting. RESULTS: Free-living diets differed in GI by 8.4 units (55.5 vs 63.9), with key foods providing 48% of carbohydrate intake during both periods. There were no differences in energy intake, body weight or body composition between treatments. On laboratory investigation days, there were no differences in subjective ratings of hunger or fullness, or in energy intake at the snack or lunch meal. CONCLUSION: This study provides no evidence to support an effect of a reduced GI diet on satiety, energy intake or body weight in overweight/obese women. Claims that the GI of the diet per se may have specific effects on body weight may therefore be misleading. SN - 1476-5497 UR - https://www.unboundmedicine.com/medline/citation/17923862/No_effect_of_a_diet_with_a_reduced_glycaemic_index_on_satiety_energy_intake_and_body_weight_in_overweight_and_obese_women_ L2 - http://dx.doi.org/10.1038/sj.ijo.0803717 DB - PRIME DP - Unbound Medicine ER -