Beneficial associations of physical activity with 2-h, but not fasting, blood glucose in Australian adults

Healy, Genevieve N., Dunstan, David W., Shaw, Jonathan E., Zimmet, Paul Z. and Owen, Neville 2006, Beneficial associations of physical activity with 2-h, but not fasting, blood glucose in Australian adults, Diabetes care, vol. 29, no. 12, pp. 2598-2604, doi: 10.2337/dc06-0313.

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Title Beneficial associations of physical activity with 2-h, but not fasting, blood glucose in Australian adults
Author(s) Healy, Genevieve N.
Dunstan, David W.
Shaw, Jonathan E.
Zimmet, Paul Z.
Owen, Neville
Journal name Diabetes care
Volume number 29
Issue number 12
Start page 2598
End page 2604
Publisher American Diabetes Association
Place of publication [Alexandria, Va.]
Publication date 2006-12
ISSN 0149-5992
Summary OBJECTIVE--We examined the associations of physical activity with fasting plasma glucose (FPG) and with 2-h postload plasma glucose (2-h PG) in men and women with low, moderate, and high waist circumference.

RESEARCH DESIGN AND METHODS--The Australian Diabetes, Obesity and Lifestyle (AusDiab) study provided data on a population-based cross-sectional sample of 4,108 men and 5,106 women aged [greater than or equal to] 25 years without known diabetes or health conditions that could affect physical activity. FPG and 2-h PG were obtained from an oral glucose tolerance test. Self-reported physical activity level was defined according to the current public health guidelines as active ([greater than or equal to] 150 min/week across five or more sessions) or inactive (<150 min/week and/or less than five sessions). Sex-specific quintiles of physical activity time were used to ascertain dose response.

RESULTS--Being physically active and total physical activity time were independently and negatively associated with 2-h PG. When physical activity level was considered within each waist circumference category, 2-h PG was significantly lower in active high-waist circumference women ([beta] -0.30 [95% CI -0.59 to -0.01], P = 0.044) and active low-waist circumference men ([beta] -0.25 [-0.49 to -0.02], P = 0.036) compared with their inactive counterparts. Considered across physical activity and waist circumference categories, 2-h PG levels were not significantly different between active moderate-waist circumference participants and active low-waist circumference participants. Associations between physical activity and FPG were nonsignificant.

CONCLUSIONS--There are important differences between 2-h PG and FPG related to physical activity. It appears that 2-h PG is more sensitive to the beneficial effects of physical activity, and these benefits occur across the waist circumference spectrum.
Language eng
DOI 10.2337/dc06-0313
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2006, American Diabetes Association
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Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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