Most middle-aged office workers now spend as much time sitting down as older pensioners, according to a report.
New research has overturned previous studies that suggested that older adults are the most sedentary age group in the UK. It highlights the potential health risks of excessive sitting at work.
Sedentary time is defined as time spent in any waking activity done while sitting or reclined, including working, eating, reading, watching TV, or spending time on a computer.
Experts say that high levels of sedentary time – more than seven hours a day – increases the risk of an early death, cardiovascular disease, type 2 diabetes and some cancers, even if people are physically active at other times of the day
The study found that 45 to 54-year-old men spend on average 7.8 hours per weekday sitting down, compared with 7.4 hours for the over-75s. Sedentary work is the main reason for this inactivity.
Only the youngest group of men surveyed – 16 to 24-year-olds – are significantly less sedentary than the over 75s on weekdays.
At the weekend, the weekday situation reverses. Those aged 25 to 54 were the least sedentary, sitting for between 5.2 and 5.7 hours a day. The over 75s were the most sedentary, at 7.3 to 7.4 hours a day.
For the youngest group, most of the time sitting down is in front of a TV or screen. Men spend less time in front of a screen as they get older, with women peaking in middle-age.
"Large parts of the population are dangerously sedentary, something we have underestimated. We need to tackle high levels of sedentary time in early and middle age, when patterns may develop. Our findings suggest that changing habits in the workplace could be an appropriate place to start, given how much time we spend sitting there every day," says Tessa Strain.
The findings from the University of Edinburgh's Physical Activity for Health Research Centre are published in the Journal of Sports Sciences.
Researchers drew upon data from more than 14,000 people in Scotland, taken from the 2012-14 Scottish Health Survey.
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