Association of television viewing with fasting and 2-h postchallenge plasma glucose levels in adults without diagnosed diabetes

Dunstan, David W., Salmon, Jo, Healy, Genevieve N., Shaw, Jonathan E., Jolley, Damien, Zimmet, Paul Z. and Owen, Neville 2007, Association of television viewing with fasting and 2-h postchallenge plasma glucose levels in adults without diagnosed diabetes, Diabetes care, vol. 30, no. 3, pp. 516-522.


Title Association of television viewing with fasting and 2-h postchallenge plasma glucose levels in adults without diagnosed diabetes
Author(s) Dunstan, David W.
Salmon, Jo
Healy, Genevieve N.
Shaw, Jonathan E.
Jolley, Damien
Zimmet, Paul Z.
Owen, Neville
Journal name Diabetes care
Volume number 30
Issue number 3
Start page 516
End page 522
Publisher American Diabetes Association
Place of publication Alexandria, VA
Publication date 2007-03
ISSN 0149-5992
1935-5548
Summary OBJECTIVE—We examined the associations of television viewing time with fasting plasma glucose (FPG) and 2-h postchallenge plasma glucose (2-h PG) levels in Australian adults.

RESEARCH DESIGN AND METHODS—A total of 8,357 adults aged >35 years who were free from diagnosed diabetes and who attended a population-based cross-sectional study (Australian Diabetes, Obesity and Lifestyle Study [AusDiab]) were evaluated. Measures of FPG and 2-h PG were obtained from an oral glucose tolerance test. Self-reported television viewing time (in the previous week) was assessed using an interviewer-administered questionnaire. Homeostasis model assessment (HOMA) of insulin sensitivity (HOMA-%S) and ß-cell function (HOMA-%B) were calculated based on fasting glucose and insulin concentrations.

RESULTS—After adjustment for confounders and physical activity time, time spent watching television in women was positively associated with 2-h PG, log fasting insulin, and log HOMA-%B and inversely associated with log HOMA-%S (P < 0.05) but not with FPG. No significant associations were observed with glycemic measures in men. The ß-coefficients across categories of average hours spent watching television per day (<1.0, 1.0–1.9, 2.0–2.9, 3.0–3.9, and ≥4.0) for 2-h PG in women were 0 (reference), 0.009, 0.047, 0.473, and 0.501, respectively (P for trend = 0.02).

CONCLUSIONS—Our findings highlight the unique deleterious relationship of sedentary behavior (indicated by television viewing time) and glycemic measures independent of physical activity time and adiposity status. These relationships differed according to sex and type of glucose measurement, with the 2-h PG measure being more strongly associated with television viewing. The findings suggest an important role for reducing sedentary behavior in the prevention of type 2 diabetes and cardiovascular disease, especially in women.
Language eng
Field of Research 111708 Health and Community Services
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, the American Diabetes Association
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007451

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