Increase in teenagers’ screen use a new threat to long-term health

New research released today (19/2) by Cancer Council Australia and the National Heart Foundation of Australia shows Australian teenagers are spending increasing time in front of electronic devices such as computers, laptops, tablets, video games and TV.

The updated National Secondary Students’ Diet and Activity Survey found 77 per cent of Australian teenagers spent more than two hours using electronic devices for entertainment on school days, compared with 71 per cent in 2010. The proportion of teenagers exceeding the recommended two hours of screen time per day on weekends also increased, from 83 to 89 per cent.

Chair of Cancer Council Australia’s Public Health Committee, Craig Sinclair, said the increase in screen use threatened to undermine any modest benefit from a marginal improvement in physical activity levels, which remained critically low.

“As a parent, I know how fixated kids can be with their electronic devices, but we have to get our kids moving and complement increased physical activity with healthier eating,” Mr Sinclair said.

Ms Mary Barry, Heart Foundation National CEO, said the research reiterated the need for a national physical activity strategy.

“Overweight and obesity among young people is a significant public health issue in Australia, with overweight adolescents being at increased risk of becoming overweight adults and experiencing chronic diseases such as heart disease,” Ms Barry said.

Mr Sinclair said there had been a marginal improvement in exercise levels since 2010, but 82 per cent of teens were still not getting the recommended minimum of one hour’s physical activity each day to help protect their long-term health.

Ms Barry said the modern day problem of increased use of electronic devices was emerging as a new frontier in the fight against obesity and inactivity with 58 per cent of students having at least three televisions at home and 40 per cent having one in their bedroom.

The survey also found four in 10 students have video games in their bedroom as well. The Heart Foundation and Cancer Council believe parents, schools and policy makers have to work together to help ensure the use of electronic devices do not harm the long-term health of our young people.


* About the National Secondary Students’ Diet and Activity Survey 2012-13
The National Secondary Students’ Diet and Activity Survey was established by Cancer Council Australia and the National Heart Foundation of Australia with the first data collection undertaken in 2009-10.
The NaSSDA survey is designed to be a regular monitoring system in which to track Australian adolescents’ body weight, dietary and physical activity behaviour. A nationally representative sample of 8,888 secondary school students in years 8 to 11, from 196 schools were surveyed in 2012-13.

Table 1: Trends in key prevalence estimates among Australian secondary school students 2009-10 to 2012-13

Percentage of young people in 2009-10 Survey  Percentage of young people in 2012-13 Survey
Body Mass Index
Overweight/obese 23% 23%
Physical Activity
Did  60 mins of physical activity (or more) each day 15% 18%
Sedentary Behaviour
Spent two hours or more using electronic media per school day 71% 77%
Spent two hours or more using electronic media per weekend day 83% 89%

Table 2: Key prevalence estimates among Australian secondary school students by sex 2012-13

Males Females
Body Mass Index
Overweight/obese 25% 20%
Physical Activity
Did  60 mins of physical activity (or more) each day 24% 11%
Sedentary Behaviour
Spent two hours or more using electronic media per school day 79% 74%
Spent two hours or more using electronic media per weekend day 90% 87%

 

Table 3: Access to electronic media at home among Australian secondary school students 2012-13

Percentage of young people in 2012-13 Survey
Television
At least three TVs in home 58%
TV in bedroom 40%
Other electronic media devices
Computer in bedroom 67%
Portable video player in bedroom 40%
Restrictions
Parents restrict TV viewing time 30%