Surviving Being a Desk Jockey: Exercise is the Key! By Mrs Vera West

I have seen worrying news items in the health domain, where the ill-health effects of long-term sitting have been equated to be as bad, if not worse, than cigarette smoking. And, some articles have said that exercise will not counter the cardiovascular effects. If that was true it would be very bad news, as most people today are bound to desks for work. But now there is an alternative view.


A major study which had 44,370 people, has conclude, based upon an analysis of previous research, that those who work while seated at desks, can counter the ill-health effects by 30 to 40 minutes of exercise that causes a sweat to break out. It could be running, if one can do it, but vigorous walking, even hiking with a pack are all fine. For those such as myself with bad arthritis in the back and hips, I find going to a swimming pool helps greatly as it is not hard on the joints. This is something that an older readership might consider.

“We know that spending lots of time sitting down isn't good for us, but just how much exercise is needed to counteract the negative health effects of sitting down all day?

Research suggests about 30-40 minutes per day of building up a sweat should do it.

Up to 40 minutes of "moderate to vigorous intensity physical activity" every day is about the right amount to balance out 10 hours of sitting still, the research says – although any amount of exercise or even just standing up helps to some extent.

That's based on a meta-analysis study published in 2020 analyzing nine previous studies, involving a total of 44,370 people in four different countries who were wearing some form of fitness tracker.

The analysis found the risk of death among those with a more sedentary lifestyle went up as time spent engaging in moderate-to-vigorous intensity physical activity went down.

"In active individuals doing about 30-40 minutes of moderate to vigorous intensity physical activity, the association between high sedentary time and risk of death is not significantly different from those with low amounts of sedentary time," the researchers explained in their paper.

In other words, putting in some reasonably intensive activities – cycling, brisk walking, gardening – can lower your risk of an earlier death right back down to what it would be if you weren't doing all that sitting around, to the extent that this link can be seen in the amassed data of many thousands of people.

While meta-analyses like this one always require some elaborate dot-joining across separate studies with different volunteers, timescales, and conditions, the benefit of this particular piece of research is that it relied on relatively objective data from wearables – not data self-reported by the participants.

At the time, the study was published alongside the release of the World Health Organization 2020 Global Guidelines on Physical Activity and Sedentary Behaviour, put together by 40 scientists across six continents. The British Journal of Sports Medicine (BHSM) also put out a special edition to carry both the study and the revised guidelines.

"As these guidelines emphasize, all physical activity counts and any amount of it is better than none," said physical activity and population health researcher Emmanuel Stamatakis from the University of Sydney in Australia.

"People can still protect their health and offset the harmful effects of physical inactivity."

The research based on fitness trackers is broadly in line with the 2020 WHO guidelines, which recommend 150-300 mins of moderate intensity or 75-150 mins of vigorous intensity physical activity every week to counter sedentary behavior.

Walking up the stairs instead of taking the lift, playing with children and pets, taking part in yoga or dancing, doing household chores, walking, and cycling are all put forward as ways in which people can be more active – and if you can't manage the 30-40 minutes right away, the researchers say, start off small.

Making recommendations across all ages and body types is tricky, though the 40-minute time frame for activity fits in with previous research. As more data gets published, we should learn more about how to stay healthy even if we have to spend extended periods of time at a desk.






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Thursday, 07 December 2023

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