TUESDAY, Jan. 18 (HealthDay News) -- Spending hours in front of
a TV or computer monitor -- known as "screen time" -- has been
linked to signs that the heart needs longer to recover from
exercise, an indication of poor heart health.
The new study, published online Jan. 17 in the journal
Heart Asia, included more than 2,000 people -- all in their 30s and from the United States -- who didn't have heart disease. The participants performed eight-minute exercise treadmill tests, which allowed the researchers to determine how long it took for their heart rates to return to normal after brisk activity.
The hearts of people who spent more time in front of TV and
computer screens tended to take longer to recover, even when
researchers took other possible factors into account and tried to
reduce their influence on the statistics.
The same thing happened in those who didn't exercise much or at
all, according to Dr. Jien-Jiun Chen, of the Cardiovascular Center
at National Taiwan University Hospital Yun-Lin branch in Douliou,
Taiwan, and colleagues.
Other research has linked more screen time to obesity, abnormal
blood sugar metabolism and metabolic syndrome, which all are
thought to boost the risk of heart disease, the study authors noted
in a news release from the journal's publisher. They added that in
comparison to other sedentary behaviors, screen time expends even
less energy than reading, writing or driving.
For more about
heart disease, visit the U.S. National Library of Medicine.