Too much TV, low physical activity may worsen cognitive function (Medical News Today):
“The team’s study included more than 3,200 adults aged 18–30…Over 25 years, the researchers recorded participants’ television viewing time and physical activity levels…In the study, high television viewing was defined as more than 4 hours daily, while low physical activity was defined as activity below 300 Kcal per 50-minute session, three times weekly. If participants met these definitions in more than two thirds of assessments, they were deemed as having a long-term pattern of high television viewing and low physical activity.
At the end of the 25-year study period, participants took part in tests that assessed their cognitive function, including memory, executive function and processing speed.
Seventeen percent of participants had a long-term pattern of low physical activity over the 25 years, 11% had a long-term pattern of high television viewing and 3% had a long-term pattern of both.
The researchers found that high television viewing and low physical activity among participants were independently associated with significantly poorer cognitive function in mid-life, while subjects with both factors were nearly two times more likely to have worse cognitive function in mid-life…“Because research indicates that Alzheimer’s and other dementias develop over several decades, increasing physical activity and reducing sedentary behavior beginning in early adulthood may have a significant public health impact.”
- Objective: To investigate the association between 25-year patterns of television viewing and physical activity and mid-life cognition
- Conclusions and Relevance: High television viewing and low physical activity in early adulthood were associated with worse midlife executive function and processing speed. This is one of the first studies to demonstrate that these risk behaviors may be critical targets for prevention of cognitive aging even before middle age.
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