Television viewing time and cardiovascular disease risk in physically active adults


Television viewing time and cardiovascular disease risk in physically active adults


A new study has suggested that meeting physical activity recommendations may marginally ameliorate the association between television viewing and the risk of cardiovascular disease. The recommended amount of exercise is at least 150 minutes per week of moderate intensity or 75 minutes per week of vigorous intensity physical activity.

2.5 hours or more of television viewing per day leads to a higher risk of cardiovascular disease, as indicated by a higher mean body mass index (BMI) and mean 30-year Framingham risk score.

The study is important as it has highlighted the association between watching too much TV and cardiovascular risk, as well as suggesting that reducing daily TV viewing to less than 2.5 hours should be a clinical and public health priority – even in physically active adults.

The authors performed a population-based, cross-sectional study using the data of 340,246 adults from the UK Biobank between 2006 and 2010. The results revealed that every additional hour of television viewing was linked to a 3% increase in 30-year cardiovascular disease risk, while meeting physical activity recommendations correlated with a 0.2% decrease in risk.

Limitations of the study include recall and selection bias, and the study did not consider workplace sedentary behaviour and physical activity; therefore the subject could be examined more thoroughly in future studies.


Patterson F, Mitchell JA, Dominick G, Lozano AJ, Huang L, Hanlon AL. Does meeting physical activity recommendations ameliorate association between television viewing with cardiovascular disease risk? A cross-sectional, population-based analysis. BMJ Open. 2020;10(6):e036507. doi: 10.1136/bmjopen-2019-036507. PMID: 32532775

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