Exercise Has the Biggest Impact on Our Waistlines as We Age

Exercise — not diet — has the greatest impact on our waistlines as we age. So, while foregoing the bacon cheeseburgers of your youth is a good step, you'll need to go further to stay fit.

Keeping a trim waistline as we age isn't all about a healthy diet. Researchers have found that the older we get, the more exercise plays a significant role in keeping fit — more so than diet.


The study, led by Russell Pate, was published in the journal of Medicine & Science in Sports & Exercise. It examined 4,999 American adults between the ages of 20 and 70. The data was taken from a survey from the National Health and Nutrition Examination Survey, which recorded participants' information regarding BMI, weight, waist circumference, and diet.

The researchers found that while older age groups maintained better dieting practices, their waist circumferences and BMIs were higher than the younger groups. The only age group whose waistlines seemed to benefit from a healthy diet alone were men age 30 to 59 and women age 50 to 59. But across all age groups, researchers noted there was an inverse effect on people's waistlines and BMIs for those who partook in some form of moderate exercise.

The researchers concluded:

“[Moderate to vigorous physical activity] was very consistently related to weight status in both genders. The relation between diet quality and weight status was less consistent. These findings provide support for public health efforts to prevent obesity by promoting increased physical activity in adult Americans.”

Pate recommends that people stand by the federal guideline that states people should aim for about 150 minutes of physical activity every week. “If most American adults met that guideline, rates of overweight and obesity would be substantially lower than they are today,” Pate said in an interview with The Huffington Post.

Not only that, but as Patricia Bloom, associate professor of geriatrics at Mt. Sinai, explains, for older folks who want to keep their mind sharp, exercise can help preserve those cognitive functions:

Photo Credit: Shutterstock

How to make a black hole

Here's the science of black holes, from supermassive monsters to ones the size of ping-pong balls.

Videos
  • There's more than one way to make a black hole, says NASA's Michelle Thaller. They're not always formed from dead stars. For example, there are teeny tiny black holes all around us, the result of high-energy cosmic rays slamming into our atmosphere with enough force to cram matter together so densely that no light can escape.
  • CERN is trying to create artificial black holes right now, but don't worry, it's not dangerous. Scientists there are attempting to smash two particles together with such intensity that it creates a black hole that would live for just a millionth of a second.
  • Thaller uses a brilliant analogy involving a rubber sheet, a marble, and an elephant to explain why different black holes have varying densities. Watch and learn!
  • Bonus fact: If the Earth became a black hole, it would be crushed to the size of a ping-pong ball.

Russian reporters discover 101 'tortured' whales jammed in offshore pens

Protected animals are feared to be headed for the black market.

(VL.ru)
Politics & Current Affairs
  • Russian news network discovers 101 black-market whales.
  • Orcas and belugas are seen crammed into tiny pens.
  • Marine parks continue to create a high-price demand for illegal captures.
Keep reading Show less

China’s artificial sun reaches fusion temperature: 100 million degrees

In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.

Credit: EAST Team
Surprising Science
  • The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
  • Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
  • Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
Keep reading Show less