A new study conducted by Columbia University and published in the 2017 Annals of Internal Medicine adds to the growing body of literature on the risks of spending most of our waking hours sitting down.
The researchers followed 7985 adults of over 45 years of age, and found that persons who were sedentary for 12 hours a day were at risk of cardiovascular disease.
And those who were sedentary for over 9-10 hours a day, or 77% of waking hours outside of sleep, had a significant higher than average mortality risk.
Over a median follow-up period of four years, 340 of the subjects died.
The researchers used hip-mounted monitors on the participants to objectively measure sedentary behaviour.
‘Sedentary behaviour is the volume of time we spend sitting down all day,’ said Dr. Keith Diaz, the lead author of the study. “If you have a job or lifestyle where you have to sit for prolonged periods of time, we suggest taking a movement break every half hour or less,’ he added.
There is a growing awareness among clinicians that sitting really is “the new smoking,’ said co-author Dr. Monika Safford.