Danger: men warned that sitting down can kill them
Middle-aged male office workers spend more time sitting down than pensioners, with many people "dangerously sedentary", according to new research.
The Edinburgh University study found 45-to-54-year-old men spend on average 7.8 hours per weekday sitting down, compared to 7.4 hours for men aged over 75.
Women in all age groups spend less time sitting than the over-75s, who spend an average 7.4 hours seated each day.
Sedentary work is the main reason for the inactivity and experts say high levels of sedentary time (ST) - more than seven hours a day - increases the risk of an early death, cardiovascular disease, type two diabetes and some cancers, even if people are physically active at other times of the day.
Lead researcher Tessa Strain said: "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."