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PHYSICAL EXERCISE AND FITNESS :
MEDICAL CONDITIONS OBESITY :
MEDICAL: HEART AND CARDIOVASCULAR:
Can Exercise Weaken the Link Between Obesity and Heart Damage?
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Can Exercise Weaken the Link Between Obesity and Heart Damage?
By Lisa Rapaport
HEALTH NEWS |
Wednesday April 26, 2017 | 3:54pm EDT
Reuters
http://www.reuters.com/article/
us-health-obesity-heart-failure-idUSKBN17S2QF
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A shorter URL for the above link:
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http://tinyurl.com/k9atvn5
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(Reuters Health) - Even though heavy adults can be more prone to cardiac
problems than their slimmer peers, exercise may lower the odds of heart
damage for obese people, a recent study suggests.
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Researchers examined data on 9,427 middle-aged people without
cardiovascular disease to see how their weight and exercise habits might
influence levels of a protein thats a marker of heart damage.
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Overall, 7.2 percent of the participants had elevated levels of a protein
known as high-sensitivity cardiac troponin T (hs-cTnT). Rising levels of
this protein can be an early warning of future heart failure in people who
dont have symptoms.
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Compared to non-obese people who got at least 75 minutes of vigorous
exercise or 150 minutes of moderate intensity activity each week,
sedentary obese people were about 2.5 times more likely to have high
levels of this protein, the study found.
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But obese people who met the same recommended exercise targets as their
non-obese counterparts were only 68 percent more likely to have elevated
cardiac troponin T levels.
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This suggests that physical activity prevents at least some of the heart
damage associated with obesity, said lead study author Dr. Roberta
Florido, a cardiovascular health researcher at Johns Hopkins University in
Baltimore.
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Although the mechanisms underlying this protection are incompletely
understood, it is possible that at least part of it involves improvements
in blood pressure, cholesterol and other metabolic abnormalities that
occur with obesity, Florido said by email.
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At the start of the study, participants were typically around 60 years old
and they tended to be overweight, if not obese.
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Researchers counted people as meeting recommended exercise levels based on
minimum weekly activity targets set by the American Heart Association:
either 150 minutes of moderate or more vigorous activity or at least 75
minutes of intense activity.
SOURCES:
JACC: Heart Failure
Volume 5, Issue 5, May 2017
DOI: 10.1016/j.jchf.2017.02.002
PDF Article
Physical Activity, Obesity, and Subclinical Myocardial Damage
Roberta Florido, Chiadi E. Ndumele, Lucia Kwak, Yuanjie Pang, Kunihiro
Matsushita, Jennifer A. Schrack, Mariana Lazo, Vijay Nambi, Roger S.
Blumenthal, Aaron R. Folsom, Josef Coresh, Christie M. Ballantyne,
Elizabeth Selvin
bit.ly/2oMNXr9
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Objectives This study sought to evaluate the association of physical
activity with chronic myocardial damage, assessed by elevated
high-sensitivity cardiac troponin T (hs-cTnT), in individuals with and
without obesity.
Background Physical activity is associated with reduced risk of heart
failure (HF), particularly among obese people. The role of chronic
myocardial damage in this association is uncertain.
Conclusions Physical activity is inversely associated with chronic
subclinical myocardial damage. Physical activity might lessen the
association between obesity and subclinical myocardial damage, which could
represent a mechanism by which physical activity reduces HF risk.
Key Words
epidemiologyheart failureobesityphysical activitytroponin T
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JACC: Heart Failure
Volume 5, Issue 5, May 2017
DOI: 10.1016/j.jchf.2017.03.006
PDF Article
Physical Activity Prevents Obesity and Heart Failure
Now What Are We Going to Do About It?
Tariq Ahmad, Jeffrey M. Testani
bit.ly/2p4PoU8
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The complete articles may be read at the URLs provided for each.
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