TV worse than PC for heart disease

Physical activity will definitely lower children’s chances of developing cardiovascular disease down the road, but physical inactivity will not necessarily increase it. Findings from a recent Queen’s University study shows different kinds of sedentary behaviour may have different consequences for young people’s health.

“Even if a child is physically active, this activity is really only making up a short period of their whole day, so it’s important to look at other aspects of their day to see what’s going on. Part of that is the kind of sedentary behaviours they engage in,” says Valerie Carson, a doctoral candidate in the School of Kinesiology and Health Studies at Queen’s.

Previous research has identified high volumes of sedentary behaviour as a risk factor for cardiovascular diseases in adults. But among the children she surveyed, Ms. Carson found no general connection between the volume of sedentary behaviour and the risk of developing diabetes or coronary heart disease.

Instead, she noticed some types of sedentary activities having a greater impact on children’s health than others. Specifically, high levels of TV viewing predicted higher cardio-metabolic risk, whereas high computer use did not.

One possible explanation is that TV viewing falls near the bottom on the scale of energy expenditure, according to some research. Another is that activities like snacking between meals that usually go hand-in-hand with specific kinds of screen times may be causing the associated health risks.

“The take home message is that we want children to be more physically active, but then, at the same time, we need to think about what they’re doing the rest of the time,” explains Mr. Carson. “Our study suggests we should also limit children’s television viewing time.”

Ms. Carson collaborated on this study with Dr. Ian Janssen (Department of Community Health and Epidemiology). Their work was supported by the Canadian Institutes of Health Research (CIHR).

The findings were recently published in the journal BMC Public Health.

3 COMMENTS

  1. Put the TV in front of a treadmill. Make it so the viewer must maintain at least a slow walk to view anything and a jog for favored programming. Sprint to change channels. :)

  2. I think that PC’s are more physical demanding then watching tv. Atleast you have to click her and click there. But if you are using Linux then you also have to use your brain. Do you know how important it is to exercise your brain. I say get the kids some things that the have to physically interact with on the computer that uses motion. Then it will be better.

  3. Many children need to be more physical active because kids now-a-days are becoming obesity. This is a big problem because kids aren’t getting enough recess time. Also, parents allowing kids to watch T.V. everday. i think parents need to allow their child to watch T.V. for a certain period of thime which will eliminate this risk. I feel like its more to do than just watch a T.V. For example, one can read, write, and do homework rather than watching T.V. all day but it’s up to the parent to tell them the do’s and dont’s which will benefit them later on in life.

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