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Strong association between time watching television and blood glucose control in children and adolescents with type-1 diabetes mellitus

¹Faculty of Medicine, University of Oslo, Norway
²Department of Pediatrics, Ullevaal University Hospital, Oslo, Norway
³Diabetes Research Centre, Aker and Ullevaal University Hospitals, and Faculty of Medicine, University of Oslo, Norway
⁴Center for Medical Statistics, Ullevaal University Hospital, University of Oslo, Norway

h.d.margeirsdottir{at}medisin.uio.no

ABSTRACT

Objective:: To examine the relationship between blood glucose control and the time spent watching television in Norwegian children and adolescents with type-1 diabetes, in a population based study.

Research design and methods:: 538 children and adolescents from nine hospitals in the eastern part of Norway participated in the study. 70% of eligible subjects participated. The time spent watching TV and time using a computer was recorded separately by interview together with clinical data. Mean age was 13.1 years (SD 3.7), mean diabetes duration 5.4 years (SD 3.4), mean HbA1c 8.6% (SD1.3; reference range 4.1-6.4%).

Results:: 62 patients (12%) watched TV < 1 hour daily; their mean HbA1c level was 8.2% (SD 0.9), 189 patients (35%) watched TV between 1 and 2 hours daily; mean HbA1c 8.4% (SD 1.2), 166 (31%) 2-3 hours daily; mean HbA1c 8.7% (SD 1.4), 75(14%) 3-4 hours; mean HbA1c 8.8% (SD 1.2), and 46 (9%) 4 hours daily; mean HbA1c 9.5% (SD1.6). This trend was highly significant (p<0.001). The association between TV viewing and HbA1c remained significant, even after adjusting for age, BMI and insulin dose. No correlation between HbA1c and the use of PC was observed.

Conclusions:: Extensive TV watching is associated with poor blood glucose control in children and adolescents with type 1 diabetes.

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