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Extra 10 Minutes of Daily Activity Could Save 110,000 U.S. Lives Annually

Extra 10 Minutes of Daily Activity Could Save 110,000 U.S. Lives Annually

TUESDAY, Jan. 25, 2022 (HealthDay News) -- Americans, get up out of that chair and get moving.

If everyone between 40 and 85 years of age were active just 10 minutes more a day, it could save more than 110,000 U.S. lives a year, a large study reports.

"Our projections are based on an additional 10 minutes of moderate to vigorous physical activity," said lead researcher Pedro Saint-Maurice of the Metabolic Epidemiology Branch at the U.S. National Cancer Institute in Bethesda, Md. "If the walk is brisk, it counts."

And added exercise benefits everyone — white, Black, Asian and Hispanic, men and women, the investigators found.

For the study, the researchers examined data from more than 4,800 middle-aged and elderly adults who were part of a government health and nutrition study between 2003 and 2006. For seven days, participants wore monitors to record their activity. The researchers then combed nationwide death data to see how many had died by the end of 2015.

The upshot: Exercise paid off big time.

Adding 10 minutes of exercise lowered participants' risk of death over the period by 7%; 20 extra minutes reduced risk by 13%; and an extra half-hour of moderate to vigorous activity slashed the risk of death by 17%, the findings showed.

In other words, an extra 20 minutes of exercise could prevent nearly 210,000 deaths a year, and 30 more minutes could head off more than 270,000 deaths, the study authors said.

Dr. David Katz — president of the True Health Initiative, a nonprofit that promotes healthy living as the best way to prevent disease — reviewed the study findings.

Katz noted that the study doesn't establish cause-and-effect proof that additional exercise prevents premature death. But, he added, "even a portion of such benefit would be of great public health importance."

While the study did not investigate specific causes of death, Saint-Maurice noted that some of the most common ones in the United States — heart disease, diabetes and some cancers — "may be prevented in adults who are more active."

The U.S. Government's Physical Activity Guidelines for Americans recommends:

  • At least 150 minutes a week of moderate-intensity aerobic activity; 75 minutes of vigorous aerobics; or a combination of both, spread throughout the week.

  • Moderate- to high-intensity muscle-strengthening activity (such as resistance or weights) on at least two days per week.

  • Less time sitting. (Even light-intensity activity can offset some of the risks of being sedentary.)

  • Being active at least 300 minutes (5 hours) per week.

  • Increasing the amount and intensity of activity gradually over time.

The U.S. Centers for Disease Control and Prevention estimates that more than 60% of American adults do not get the recommended amount of activity. And roughly one-quarter aren't active at all.

However, according to a 2021 study published in the journal Socius, more Americans started exercising during the pandemic than before. Canadian researchers found that in 2019 about 73% of Americans took part in some physical activity or exercise. In 2020, as the pandemic took hold, that number increased to 83%. Also, in the past week, 76% of Americans surveyed said they had gone outside for a walk, hike or exercise.

Adding activity to your day doesn't have to be a grind. Walking for exercise, cycling for fun or transportation, working out on cardio machines, dancing and playing sports like tennis or golf can all help, Katz noted.

Cleaning the house, working in the yard and playing with your kids are other ways to step up your activity level. Parking farther from your destination and walking the rest of the way is an easy strategy. Marching in place while you watch TV or taking the stairs more often can help, too.

"Abundant evidence from diverse sources indicates that all physical activity contributes to the same, common benefit," Katz said.

"This is another reminder of the profound potential to leverage lifestyle practices as the very best of medicine to prevent disease, promote health, add years to lives, and add life to years," he added.

Katz said making this common knowledge and empowering everyone to act on that knowledge should be a top public health and cultural priority.

The findings were published online Jan. 24 in JAMA Internal Medicine.

More information

The U.S. Centers for Disease Control and Prevention has more about the benefits of exercise.

SOURCES: Pedro Saint-Maurice, PhD, postdoctoral fellow, Metabolic Epidemiology Branch, U.S. National Cancer Institute, Bethesda, Md.; David Katz, MD, MPH, specialist in preventive and lifestyle medicine, president, True Health Initiative, Tulsa, Okla.; JAMA Internal Medicine, Jan. 24, 2022, online

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