Note to our followers: Due to a lack of sufficient funding, HealthNewsReview.org will cease daily publication of new content at the end of 2018. Publisher Gary Schwitzer and other contributors may post new articles periodically. If you wish to donate, your gift might help keep the site available to the public for a few more years, by defraying costs of web hosting and maintenance. All of our 6,000+ published articles contain lessons to help people improve their critical thinking about health care. Read more about our change in status. And here's how to make a donation.
Read Original Release

16-person study too small to claim that seated desk exercise is beneficial

Can you burn calories while sitting at a desk?

Our Review Summary

Getty Images

This news release from the University of Illinois discusses new research from their faculty, which finds that moving your legs while seated at your desk may boost your metabolic rate more than working at a standing desk. Published in the journal Work, these results are surprising and intriguing, yet flaws in the study mean that the release may have been premature. Some red flags include the fact that measurements were only taken once from a very small sample size, and that funding for the research came from the parent company of a device that was found to be so effective. The device (described as “a movable footrest, suspended from the underside of the desk, which enabled the feet to swing, twist or teeter”) was compared with sitting still at a desk and standing at a desk. The release also gives the reader no frame of reference for interpreting the study results, leaving us with more questions than answers.

 

Why This Matters

It’s true that Americans spend more time sitting today than we should, and it would be great to have a form of exercise that can combat the negative impacts of sitting while still remaining productive at our desk jobs. A solution like the one proposed in this news release, where you could increase your metabolism with minimal extra effort while sitting at your desk, is extremely attractive — if it works.

Criteria

Does the news release adequately discuss the costs of the intervention?

Not Satisfactory

According to the study, the “commercially available” device referenced in the news release is called the HOVR (the company that makes the HOVR funded the research). While the news release didn’t mention the cost of the device, a quick Google search shows that these devices are available for purchase online and cost between $75 and $150.

Does the news release adequately quantify the benefits of the treatment/test/product/procedure?

Not Satisfactory

The news release did briefly mention the benefits found in the study: “modest movement while seated elevated the metabolic rate more than sitting and more than standing, by 17 and 7 percent respectively.” But it gives us no context for these numbers — in terms of metabolic rate variability, is 7% a lot? A layperson reading this news release has no frame of reference to determine if these numbers are significant. Would 7% increase over the course of a lifetime reduce sitting-attributed mortality?

Does the news release adequately explain/quantify the harms of the intervention?

Not Satisfactory

There is no mention of any harms in the news release. It’s likely that there aren’t many, since low-impact seated activity is good for joints and can still burn some calories. But still, as we say in our review criteria: if you’re only hearing about the potential benefits of a test or treatment, run for the hills.

Does the news release seem to grasp the quality of the evidence?

Not Satisfactory

There were several limitations of the study that could be seen from just a quick look at the abstract (the full article was not accessible by the reviewers), but were not mentioned in the news release. One limitation is the small sample size: only 16 people took part in the study. Another is that there is no mention of participant gender, even though there have been many studies that show that fat metabolism is different in men and women. The third limitation is that data collection was only done once; it would have been easy for the researchers to repeat the experiment several times to establish the validity of their results. The news release does quote the lead researcher as saying that the study needs to be further validated, but if this is the case, was publicizing the results from the study premature? The answer is likely yes.

Does the news release commit disease-mongering?

Not Satisfactory

The release fear mongers by citing a statistic based on one association study that looked at the relationship between sitting and risk of death. The study suggests that 7% of deaths from any cause were attributed to long periods of sitting down. What does it even mean that “Up to 7 percent of deaths have been attributed to sitting alone.” Does it mean those people died earlier than they would have otherwise? If so, how much earlier? And what sort of evidence would allow us to say with any certainty that sitting down was the cause of these deaths as opposed to the myriad other possibilities? If a statistic like this is to be used, it’s meaning must be explained — otherwise it constitutes unacceptable fear-mongering.

The authors of that study also cautioned that “sedentary behavior research is still in its infancy and that more high-quality prospective studies are needed.”

Does the news release identify funding sources & disclose conflicts of interest?

Satisfactory

The news release notes in the last sentence that the research was funded by the company that makes the HOVR device used in the intervention.

Does the news release compare the new approach with existing alternatives?

Not Satisfactory

No other alternative devices that promote leg movement while seated were mentioned. But in fact there are a ton of other options to stimulate movement while seated — from balance balls to leg and arm peddlers (and some are also significantly less expensive).

Does the news release establish the availability of the treatment/test/product/procedure?

Satisfactory

The HOVR device used in the study is commercially available, as the news release says. A search online shows that it can be purchased both from the company website and from Amazon.

Does the news release establish the true novelty of the approach?

Satisfactory

This study is one in a growing body of research about non-exercise activity thermogenesis (NEAT), which is the energy we expend in our daily lives when not sleeping, eating, or doing sports-like levels of exercise. NEAT incorporates our fidgeting, our daily walking around, even our keyboard typing. This study is novel in that it found that, counter-intuitively, leg exercises while sitting might increase metabolism more than using a standing desk. But the operative word here is “might” –based on the quality of evidence the news release was likely premature, and did not highlight the many weaknesses in the study.

Total Score: 4 of 10 Satisfactory

Comments

We Welcome Comments. But please note: We will delete comments left by anyone who doesn’t leave an actual first and last name and an actual email address.

We will delete comments that include personal attacks, unfounded allegations, unverified facts, product pitches, or profanity. We will also end any thread of repetitive comments. Comments should primarily discuss the quality (or lack thereof) in journalism or other media messages about health and medicine. This is not intended to be a forum for definitive discussions about medicine or science. Nor is it a forum to share your personal story about a disease or treatment -- your comment must relate to media messages about health care. If your comment doesn't adhere to these policies, we won't post it. Questions? Please see more on our comments policy.