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New Delhi: A new research has found that activity levels of teenagers has decreased almost as equal as 60-year-olds.

The findings, published in the journal Preventive Medicine, also showed that starting at age 35, activity levels declined through mid-life and older adulthood.

The findings come amid heightened concern that exercise deficits are contributing to growing obesity epidemic, particularly among children and teens, researchers said.

The study by Johns Hopkins Bloomberg School of Public Health in the US found that young adults after the age of 20 show the only increases in activity over the lifespan, and starting at age 35, activity levels declined through midlife and older adulthood.

“Activity levels at the end of adolescence were alarmingly low, and by age 19, they were comparable to 60-year-olds,” said the study’s senior author, Vadim Zipunnikov, Assistant Professor at Johns Hopkins University Bloomberg School of Public Health in Maryland, US.

For all age groups, males generally had higher activity levels than females, particularly high-intensity activity, but after midlife, these levels dropped off sharply compared to females.