Adverse associations of increases in television viewing time with 5-year changes in glucose homoeostasis markers: The AusDiab study

Hansen, A. L. S., Wijndaele, K., Owen, N., Magliano, D. J., Thorp, A. A., Shaw, J. E. and Dunstan, D. W. (2012) Adverse associations of increases in television viewing time with 5-year changes in glucose homoeostasis markers: The AusDiab study. Diabetic Medicine, 29 7: 918-925.


Author Hansen, A. L. S.
Wijndaele, K.
Owen, N.
Magliano, D. J.
Thorp, A. A.
Shaw, J. E.
Dunstan, D. W.
Total Author Count Override 7
Title Adverse associations of increases in television viewing time with 5-year changes in glucose homoeostasis markers: The AusDiab study
Journal name Diabetic Medicine   Check publisher's open access policy
ISSN 0742-3071
1464-5491
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1111/j.1464-5491.2012.03656.x
Volume 29
Issue 7
Start page 918
End page 925
Total pages 8
Place of publication Oxford, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2013
Language eng
Formatted abstract Background  Television viewing time is associated cross-sectionally with abnormal glucose tolerance and diabetes risk; however, the impact of changes in television viewing time on glycaemic measures is less understood. We examined relationships of 5-year change in television viewing time with 5-year change in glucose homeostasis markers.

Methods
  Participants in the Australian Diabetes, Obesity and Lifestyle study with data available at the 1999–2000 baseline and the 2004–2005 follow-up were included (4870; 45% men). Television viewing time (h/week) was assessed by questionnaire. Fasting plasma glucose, serum insulin and 2-h plasma glucose were obtained from an oral glucose tolerance test. Beta-cell function and insulin resistance were ascertained using the homeostasis model assessment 2-calculator. Associations of change in television viewing time with changes in glucose homeostasis markers were examined using linear regression models [β-coefficients (95% CI)]. Adjustments included baseline measures of age, television viewing time and glycaemic marker, and baseline and 5-year change in diet quality, energy intake, physical activity and waist circumference.

Results
  For every 5-h per week increase in television viewing time from baseline to 5-year follow-up, changes in glucose homeostasis markers were observed: among women there was a significant increase in fasting plasma glucose [0.01 (0.00–0.02) mmol/l] insulin resistance [0.03 (0.01–0.05)] and insulin secretion [1.07 (0.02–2.12) %]; insulin levels increased [men: 1.20 (0.30–2.09); women: 1.06 (0.32–1.80) pmol/l]; in men, 2-h plasma glucose levels increased [0.06 (0.01–0.1) mmol/l].

Conclusion  Five-year increases in television viewing time were associated adversely with changes in glucose homeostasis markers. These findings add to earlier cross-sectional evidence that television viewing time can be associated with biomarkers of diabetes risk.
Keyword Glucose homeostasis
Prospective studies
Sedentary behaviour
Television viewing
Open Access Mandate Compliance No - Author Post-Print Requested
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Population Health Publications
 
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