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April 11-13, 2019
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Study author provides practical tips for reducing sedentary
Philadelphia, January 20, 2015 -- Accumulated evidence suggests
that sitting for prolonged periods of time increases risk for heart
disease, diabetes, cancer, and death, regardless of whether a
person exercises regularly or not. The article
is published in Annals of Internal Medicine.
More than one half of the average person's waking life involves
sedentary activity, such as watching television, working at a
computer, or commuting. Studies have explored the independent
association between prolonged sitting and health outcomes after
adjusting for physical activity; however, the magnitude,
consistency, and manner of association between sedentary time and
outcomes independent of physical activity remain unclear.
Researchers conducted a systematic review and meta-analysis of
published research to quantitatively evaluate the association
between sedentary time and health outcomes independent of physical
activity participation among adults. The evidence shows that
prolonged sitting is independently associated with negative health
outcomes and mortality. However, the deleterious effects of sitting
time on health are more pronounced among those who do little or no
exercise than among those who exercise regularly.
Study author, David Alter, MD, PhD, Senior Scientist at Toronto
Rehabilitation Institute-University Health Network and Institute
for Clinical Evaluative Sciences, says that exercising one hour per
day should not give us the right of passage or peace of mind to
remain seated for the remaining 23. He offers simple strategies for
becoming less sedentary, such as taking a 1-3 minute break every
half hour or so throughout the day to stand (standing burns twice
as many calories as sitting) or move around at work. Standing or
exercising while watching television can also help. He tells his
patients to set achievable goals and scale up slowly. For example,
start by reducing sitting times by 15-20 minutes per day and set
weekly goals to improve from there. Over time, one should aim for
2-3 fewer sedentary hours in a 12 hour day.
About Annals of Internal Medicine
Published by the American College of Physicians (ACP), Annals of
Internal Medicine is one of the most widely cited
peer-reviewed medical journals in the world. Annals of Internal
Medicine has a 2013 impact factor of 16.104, ranking it fifth
out of 150 journals in the General & Internal Medicine
category. The journal has been published for 88 years and accepts
only about 7 percent of the original research studies submitted for
publication. Get the latest news and information from the journal
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