Glycaemic index and glycaemic load intake patterns in older Australian women

O'Sullivan, Therese Anne, Bremner, Alexandra, Cedaro, Pieta, O'Neill, Sheila, & Lyons-Wall, Philippa (2009) Glycaemic index and glycaemic load intake patterns in older Australian women. Nutrition and Dietetics, 66(3), pp. 138-144.

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Aims: Dietary glycemic index (GI) and glycemic load (GL) have been associated with risk of chronic diseases, yet limited research exists on patterns of consumption in Australia. Our aims were to investigate glycemic carbohydrate in a population of older women, identify major contributing food sources, and determine low, moderate and high ranges. Methods: Subjects were 459 Brisbane women aged 42-81 years participating in the Longitudinal Assessment of Ageing in Women. Diet history interviews were used to assess usual diet and results were analysed into energy and macronutrients using the FoodWorks dietary analysis program combined with a customised GI database. Results: Mean±SD dietary GI was 55.6±4.4% and mean dietary GL was 115±25. A low GI in this population was ≤52.0, corresponding to the lowest quintile of dietary GI, and a low GL was ≤95. GI showed a quadratic relationship with age (P=0.01), with a slight decrease observed in women aged in their 60’s relative to younger or older women. GL decreased linearly with age (P<0.001). Bread was the main contributor to carbohydrate and dietary GL (17.1% and 20.8%, respectively), followed by fruit (15.5% and 14.2%), and dairy for carbohydrate (9.0%) or breakfast cereals for GL (8.9%). Conclusions: In this population, dietary GL decreased with increasing age, however this was likely to be a result of higher energy intakes in younger women. Focus on careful selection of lower GI items within bread and breakfast cereal food groups would be an effective strategy for decreasing dietary GL in this population of older women.

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ID Code: 30387
Item Type: Journal Article
Refereed: Yes
Keywords: Glycaemic Index, Glycaemic Load, Women, Australia, Carbohydrate, Dietary Intake
DOI: 10.1111/j.1747-0080.2009.01357.x
ISSN: 1446-6368
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NUTRITION AND DIETETICS (111100) > Nutrition and Dietetics not elsewhere classified (111199)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Public Health & Social Work
Copyright Owner: Copyright 2009 Dietitians Association of Australia and the authors
Copyright Statement: The definitive version is available at
Deposited On: 14 Feb 2010 23:24
Last Modified: 10 Aug 2011 16:36

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