Wednesday, April 24, 2019 | ePaper

Moderate physical activities may lower the death risk

The study, published in the British Journal of Sports Medicine states moderate physical activities, such as walking or gardening, may lower the risk of death from cardiovascular disease, cancer or any cause

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Weekend Plus Desk :
ven moderate physical activities, such as walking or gardening, may lower the risk of death from cardiovascular disease, cancer or any cause, a study has found. Higher amounts of activity or more vigorous activities, such as running, cycling and competitive sports, are associated with additional health benefits that are not outweighed by the risks of participating in these activities, researchers said.
The study, published in the British Journal of Sports Medicine, used data collected through the surveys between 1997 and 2008 to estimate the activity levels of 88,140 people aged 40-85 years, and linked that data with registered deaths up until December 31, 2011.
They calculated the total leisure time physical activity of participants using definitions in 2008 US guidelines, which roughly equate one minute of vigorous activity such as running, fast cycling or competitive sports as equivalent to two minutes of moderate-intensity activity, such as brisk walking, gardening or dancing.
Only activities lasting at least 10 continuous minutes were taken into account, researchers said. Compared with individuals who were inactive, those who participated in just 10-59 minute per week of moderate physical activities during their leisure time had an 18 per cent lower risk of death from any cause over the study period, and the health benefits continued to mount as activity levels went up.
Guidelines recommend at least 150 minutes per week of moderate activity done in at least 10 minute bouts, and individuals who participated in 150-299 minutes per week reduced the overall risk of death by 31 per cent. Those who clocked up ten times this amount - 1,500 minutes or more per week - almost halved their risk (46 per cent lower).
Reductions in risk of death from cancer also corresponded with increasing activity levels. In terms of risk of death from cardiovascular events such as strokes and heart attacks, individuals who were active for 10-59 minutes per week during their leisure time saw their risk fall by 12 per cent, and those who did 120-299 minutes per week by 37 per cent, compared with people who were inactive. However, much greater levels of physical activity were not associated with any greater benefits.
Individuals who were active for 1,500-min or more per week had a reduced risk of death from cardiovascular disease of 33 per cent - so their risk of death was slightly higher than those who met recommended activity levels but undertaking more moderate amounts.
This is an observational study, and as such, cannot establish cause, and also relied on participants self-reporting activity levels, researchers said. However, the authors point out that the study also has much strength, including its large sample size representative of the US population, and that their findings support the US recommendations on activity levels.
The study also showed that individuals who participated in vigorous physical activities had significantly lower risk of death than those who only did light or moderate physical activity.

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