One Brisk Walk a Week

One Brisk Walk a Week could cut early death by 70 percent in older women – New research.

It’s been proven from previous studies that active people have about 20 to 30 percent lower death rates, compared to their least active counterparts.

A new study suggests that more physical activity, particularly at higher intensities, could lead to a ‘big’ increase in life expectancy among females in retirement age. The study claims that just one brisk walk a week could cut early death by 70 percent in older women.

Harvard University researchers analyzed more than 17,000 women over 70 years old. They found light activity like housework did little for longevity, but a regular brisk walk did wonders.

The latest research, conducted from 2011 to 2015, is among the first to investigate physical activity, measured using a wearable device called a triaxial accelerometer. The device is capable of measuring activity along three planes: up and down, front to back and side to side. The capabilities increase sensitivity to detect physical activity and allow for more precise measurements.

Study first author Professor I-Min Lee, of Harvard University’s medical and public health schools in the US, said: ‘We used devices to better measure not only higher intensity physical activities, but also lower intensity activities and sedentary behaviour, which has become of great interest in the last few years.’

More than 17,700 women with an average age of 72 wore the activity monitoring device for seven days. Figures were analysed from 16,741 participants who wore their devices for at least 10 hours a day, on at least four days. During an average follow-up of around 30 months, 207 women died.

The researchers found that more moderate to vigorous intensity physical activity -such as brisk walking – was associated with roughly a 60 percent to 70 percent lower risk of death at the end of the study among the most active women, compared to the least active.

More light intensity activity – including housework or slow walking such as window shopping – or more sedentary behavior was not independently associated with death risk at the study’s end.

The researchers stressed their finding does not mean light activity isn’t beneficial for other health outcomes.

Prof Lee said the findings, published in the journal Circulation, support 2008 guidelines that suggest at least 150 minutes a week of moderate intensity or 75 minutes a week of vigorous-intensity aerobic physical activity – or a combination of the two – and muscle-strengthening exercises two or more days a week.

She added: “We hope to continue this study in the future to examine other health outcomes, and particularly to investigate the details of how much and what kinds of activity are healthful.

“What is irrefutable is the fact that physical activity is good for your health”.

She also said the study’s participants were relatively healthy, and mostly white women.

Experts say this research should drive doctors to prescribe more intense physical activity to their patients, particularly older females.


Also Read:

*Older people with a purpose in life      stay more physically fit – Study

*Best Exercises for Your Body  Revealed by Harvard doctor 

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