Reporting on reducing inactivity at work has overplayed the role of standing desks. Photo / 123RF
Sitting is so culturally ingrained at work, at the wheel, in front of the TV and at the movies, it takes a great effort to imagine doing these things standing up, let alone peddling as you work at a "bike desk".
"Abandon your chair for four hours to stay healthy", office workers are told
And: "Stand up at your desk for two hours a day", new guidelines say.
But what many media reports did not mention was the guidelines were based on limited evidence. They were also co-authored by someone with commercial links to sit-stand desks (desks you raise and lower to work at standing or sitting), a link not declared when the guidelines were first published in a journal.
• Aiming for two hours a day of standing and light activity (slow walking) during working hours, eventually progressing to a total of four hours a day for all office workers with mainly desk-based roles
• Regularly breaking up sit-down work with standing using adjustable sit-stand desks or work stations
• Avoiding long periods of standing still, which may be as harmful as long periods sitting
• Changing posture and doing some light walking to alleviate possible musculoskeletal pain and fatigue, and
• Recommending employers warn staff about the potential dangers of too much sitting at work or at home, as part of workplace health and wellness activities.
How did the media report this?
Our team analysed news articles about the guidelines published in media outlets around the world.
We found all the articles reported the top-line recommendation to reduce sitting by two hours a day, and to replace the sitting with standing or slow walking.
Almost two-thirds of articles also noted the recommendation that people should regularly break up seated work with standing, and that this could be done with a sit-stand desk.
Even though the guidelines' authors said the recommendations were based on the best evidence so far and more evidence was needed, these caveats did not make it into most news media reporting.
These caveats are important because the authors acknowledge the evidence quality is weak and that guidelines are likely to change.
Commercial interests
The news media also seemed to be unaware of amendments to the journal article, including to expand the disclosure of competing interests to clarify one author, Gavin Bradley, has a connection to the business of selling sit-stand desks.
The revised version notes Gavin Bradley is 100% owner of a website that sells sit-stand work products called Sit-Stand Trading Limited. He is also director of the Active Working Community Interest Company (CIC).
... the dangers of sedentary working and prolonged sitting time.
The website also features a range of sit-stand work products and providers.
We are not suggesting Gavin Bradley skewed the sit-stand desk evidence in the guidelines. But the initial failure to disclose his interests is a concern.
No, sitting doesn't cancel out exercise
In our study, we also found more than one-third of articles incorrectly warned that too much sitting cancels out the benefits of exercise.
This is contrary to recent research showing high levels of moderate intensity physical activity (about 60-75 min a day) seem to eliminate the increased risk of early death associated with high levels of sitting time (eight hours a day or more).
Yet, this study does not appear among the research resources on the Get Australia Standing campaign website, which appears to promote the message that it doesn't matter if you are physically active, if you sit a lot you are doing yourself harm.
How realistic are the recommendations anyway?
Regardless of the media reporting of the guidelines, we need to ask ourselves how realistic the guidelines are.
The recommendations may be premature and hard to put into practice given that studies involving motivated participants have only managed to reduce the time spent sitting by 77 minutes in an eight-hour work day.
These make general recommendations to sit less and break up periods of uninterrupted sitting because the experts conclude the evidence does not point to a specific amount of sitting time at which harm begins.
Given the evolving research field and the vested interests, we need to pay attention to sitting time, standing, and physical activity levels as well as the role of industry players and their contribution to advice on health.