"If you have a sedentary occupation, especially in a sitting
position for hours, you should move yourself out of work at least
150 minutes per week in a moderate intensity to mitigate the
detrimental effects of sedentary behavior at work,” Eduardo Caldas
Costa from Federal University of Rio Grande do Norte in Natal told
Sedentary behavior has been associated with an increased risk for
metabolic syndrome - a cluster of unfavorable markers including
abdominal obesity, high blood pressure and low HDL “good”
cholesterol - which, in turn, is associated with an increased risk
of developing heart disease and type 2 diabetes.
The researchers investigated whether Navy workers who spent about
eight hours daily seated, mostly in administrative duties, had
different risks for metabolic syndrome based on their activity
levels outside of work.
All the workers were men, ranging in age from 26 to 42. Out of 502
workers included in the final analysis, 201, or 40 percent, did not
achieve at least 150 minutes per week of moderate-vigorous activity.
Nearly half, 48 percent, were overweight and almost 19 percent were
After adjusting for age, time in the job, body mass index (BMI) and
tobacco use, researchers found the sedentary workers who met the
physical activity recommendations were only about half as likely to
have metabolic syndrome, compared to those with lower activity
Workers with higher activity levels were also less likely to have
abdominal obesity, high blood pressure and low HDL.
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Even those who increased their activity slightly (the
“insufficiently active” group) had lower blood pressure than workers
who remained sedentary off the job, researchers reported in the
Journal of Occupational and Environmental Medicine.
“Sedentary occupation workers should break up prolonged sitting time
at work as much as they can in order to reduce the risk for
cardiovascular and metabolic diseases,” Caldas Costa said by email.
“Be involved in regular physical activity out of work, including
leisure time, domestic activities, and active transportation (i.e.,
walking and/or cycling).”
Only the physically active group, he added, and not the
insufficiently active group, had a reduced risk for metabolic
syndrome compared to the sedentary group. "Therefore," he said, "it
seems that probably there is a minimum quantity of physical activity
that can mitigate the detrimental effects of sedentary behavior at
SOURCE: http://bit.ly/2wsRazk Journal of Occupational and
Environmental Medicine, online July 24, 2017.
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