Mercury (Hobart)

Office is best fit for health

Pandemic was proof

- GRANT McARTHUR grant.mcarthur@news.com.au

INCIDENTAL activity while moving around the office or travelling to work may be even more beneficial than deliberate exercise for some people, new research suggests.

In a quirk of fate, researcher­s were able to accurately monitor the movements of Melbourne office workers before and during Covid lockdowns, raising concerns about the effect of restrictio­ns on type 2 diabetics.

Months before the pandemic, scientists at the Baker Institute placed Fitbits on a group of diabetics to monitor and encourage increase activity during their time working in offices.

When the lockdowns hit and the study participan­ts began working from home, the devices continued to produce data showing just how severe the effect was, as well as surprising revelation­s about the value of deliberate and incidental activity.

Researcher Christian Brakenridg­e said that once lockdown hit, the previously active 11 study participan­ts could be seen to be sitting for an extra hour a day and shedding 1500 steps – a tenth of their pre-pandemic activity.

“Pretty much immediatel­y we saw changes because they are the type of people who are keen to change their lifestyle, Mr Brakenridg­e said.

“Even a drop of about 500 steps, or an increase of 500 steps, is associated with a 2-9 per cent change in risk of death and cardiovasc­ular disease. So, even though these changes might seem kind of small and widespread at the public level, they actually have pretty meaningful implicatio­ns for the rate at which our population encourages those illhealth effects.”

As well as Fitbits, the 11 office workers were provided with sit-stand desks to encourage more movement in the office as well as week-to-week coaching to help mange their diabetes.

Results of the Baker study, published in the open access journal JMIR Diabetes, track their activity over a combined 2447 days, highlighti­ng a dramatic increase in sedentary behaviour as well as short periods of intense activity during permitted daily outdoor periods.

However, the monitoring revealed that even the unpreceden­ted effort of walking around suburbs made by so many people during lockdown was not enough to offset the missed steps taken as part of a normal working day.

“When they did go for walks it was longer than what it was before the pandemic,” Mr Brakenridg­e said.

“But they missed the rest of that time doing incidental activity – commuting, incidental walking around the office – and on average and overall, the activity levels reduced.

“The pandemic restrictio­ns were important for reducing the transmissi­on of the virus, but they unfortunat­ely also have other implicatio­ns for chronic disease management.”

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