Television viewing time and weight gain in colorectal cancer survivors: a prospective population-based study

Abstract

Objective

To investigate the prospective relationships between television viewing time and weight gain in the 3 years following colorectal cancer diagnosis for 1,867 colorectal cancer survivors (body mass index (BMI) ≥ 18.5 kg/m2).

Methods

BMI, television viewing time, physical activity, and socio-demographic and clinical covariates were assessed at baseline (5 months), 24 months and 36 months post-diagnosis. Multiple linear regression was used to study independent associations between baseline television viewing time and BMI at 24 and 36 months post-diagnosis.

Results

At both follow-up time points, there was a significant increase in mean BMI for participants reporting ≥5 h/day of television viewing compared to those watching <3 h/day at baseline (24 months: 0.72 kg/m2 (0.31, 1.12), p < 0.001; 36 months: 0.61 kg/m2 (0.14, 1.07), p = 0.01), independent of baseline BMI, gender, age, education, marital status, smoking, cancer site, cancer disease stage, treatment mode and co-morbidities. Additional adjustment for baseline physical activity did not change results.

Conclusions

These findings suggest that a greater emphasis on decreasing television viewing time could help reduce weight gain among colorectal cancer survivors. This, in turn, could contribute to a risk reduction for co-morbid conditions such as type 2 diabetes and cardiovascular disease.

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Acknowledgments

This project was funded by the Cancer Council Queensland. Owen is supported by a Queensland Health Core Research Infrastructure grant and by NHMRC Program Grant funding (#301200). Dunstan is supported by a Victorian Health Promotion Foundation Public Health Research Fellowship.

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Correspondence to Joanne F. Aitken.

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Wijndaele, K., Lynch, B.M., Owen, N. et al. Television viewing time and weight gain in colorectal cancer survivors: a prospective population-based study. Cancer Causes Control 20, 1355–1362 (2009). https://doi.org/10.1007/s10552-009-9356-5

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Keywords

  • Colorectal neoplasms
  • Body mass index
  • Health behavior
  • Longitudinal studies