Regular exercise may reduce the risk of death from prolonged sitting: Study

Washington DC [US]Oct 28 (ANI): A sedentary lifestyle can increase one's risk of death, but it can be countered by just 20 to 25 minutes of physical activity per day, according to a study published online in the British Journal of Sports Medicine.

Regardless of how much time is spent sitting down each day, greater daily totals of physical activity are associated with a lower risk, according to the research.

Adults in affluent countries sit for nine to ten hours a day on average, mainly during working hours. Furthermore, the researchers clarify that a severely sedentary lifestyle is linked to an increased chance of passing away.

A significant amount of previous research on the benefits of physical activity in reducing prolonged sitting has relied on aggregated data, which always leads to a generalized approach, they suggested.

To try to overcome this, the researchers pooled individual participants' data from four groups of people equipped with activity trackers to find out whether physical activity can change the relationship between sedentary time and death, and vice versa, and how much physical activity and sitting. can affect the risk.

They included data on individual participants collected between 2003 and 2019 from the Norwegian Tromsö Study 2015-16; Swedish Healthy Aging Initiative (HAI) 2012-19; the Norwegian National Physical Activity Survey (NNPAS) 2008-09; and the US National Health and Nutrition Examination Survey (NHANES) 2003-06.

Almost 12,000 people aged at least 50 were included in the analysis. They had at least 4 days of 10 daily hours of activity trackers, had been monitored for at least 2 years, and had provided details of potentially influential factors: their gender, education level, weight, height, smoking history, alcohol intake, and whether they had current and/or previous cardiac - vascular disease, cancer and/or diabetes.

Overall, 5,943 people spent less than 10.5 hours sitting each day; The 6042 clocked up 10.5 or more sedentary hours.

More than 22 daily minutes of moderate to vigorous physical activity was associated with a lower risk of death.

While a higher amount of moderate-to-vigorous physical activity was associated with a lower risk of death, independent of the amount of sedentary time, the association between sedentary time and death was largely influenced by the amount of moderate-to-vigorous physical activity. 10 extra minutes a day was associated with a 15 percent lower risk of death among those who spent less than 10.5 hours sedentary, and a 35 percent lower risk among those who spent more than 10.5 hours sedentary each day.

Light-intensity physical activity was only associated with a lower risk of death among very sedentary people (12 daily hours). This is an observational study and as such cannot establish cause and effect. The researchers acknowledge that they were unable to repeat measurements of physical activity and sedentary hours, which rules out any changes over time.

Potentially influential factors such as diet, mobility problems and general health were also not taken into account. Activity trackers may not correctly classify all activity types and their corresponding intensities - cycling, resistance training, gardening, for example.

Still, the researchers conclude, “Small amounts of MVPA [moderate to vigorous physical activity] may be an effective strategy to mitigate the mortality risk from high sedentary time, where accumulation of more than 22 minutes of MVPA eliminates the risk of high sedentary time.

"Efforts to promote physical activity can have significant health benefits for individuals." (ANI)


https://nord.news/2023/10/28/regular-exercise-may-reduce-the-risk-of-death-from-prolonged-sitting-study/?feed_id=51988

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