Teens Become Less Active as They Enter Adulthood

THURSDAY, Dec. 22 (HealthDay News) —
Young adults entering college often become much less active than they were
as teenagers, a new study finds.

Researchers from McMaster University in Ontario, Canada, noted this
trend continues into adulthood. They argued more should be done to prevent
this drop in physical activity.

The researchers interviewed 683 Canadian teens aged 12 to 15. The teens
were interviewed twice a year for 12 years until they were 24 to 27 years
old.

During that time, the amount of exercise the teens did dropped 24
percent. The biggest decline, the researchers noted, was among young men
who were headed to college.

“This is a critical period, as the changes in physical activity during
the transition from late adolescence to early adulthood represents the
most dramatic declines in physical activity across a person’s life,” said
the study’s principal investigator, Matthew Kwan, a postdoctoral fellow in
the department of family medicine at the Michael G. DeGroote School of
Medicine, in a university news release. “In particular, the transition
into post-secondary is a one-time period when individuals become much less
active.”

The study was published Dec. 15 in the American Journal of
Preventative Medicine
.

The researchers pointed out that young women did not have the same
significant drop in physical activity as the men. Their overall level of
physical activity fell only 1.7 percent. High school girls, however, were
less active than high school boys to begin with.

“It may be that girls experience the greatest declines in physical
activity earlier in their adolescence,” Kwan explained.

The study also showed that although other risky behaviors, such as
smoking and binge drinking got worse as the teens became young adults,
these behaviors declined with age and maturity.

More information

The U.S. Centers of Disease Control and Prevention provides information
on the exercise needs of children and adults.

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