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SPORTS MEDICINE :
MEDICAL: CONDITIONS: OBESITY :
PHYSICAL EXERCISE AND FITNESS: EFFECTIVENESS :
DIET DIETS DIETING: WEIGHT LOSS:
Exercise Won't Fix the Obesity Epidemic, Researchers Argue
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Exercise Won't Fix the Obesity Epidemic, Researchers Argue
by Anne Harding, Live Science Contributor
April 22, 2015 06:41pm ET
Live Science
http://www.livescience.com/50580-exercise-obesity-epidemic.html
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The food industry has helped push the belief that people's sedentary
lifestyles are solely to blame for widespread obesity, three
researchers argue in a new editorial.
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And by doing so, the industry has deflected attention from the role
that sugary drinks and junk food play in making people fat, said
Dr. Aseem Malhotra and his colleagues. Malhotra is an honorary
consultant cardiologist at Frimley Park Hospital in the United Kingdom
and science director of the advocacy group Action on Sugar.
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"The public health messaging around diet and exercise, and their
relationship to the epidemics of type 2 diabetes and obesity, has
been corrupted by vested interests," the researchers write in their
editorial, published today (April 22) in the British Journal of
Sports Medicine. They liken the food industry's tactics to those
that "Big Tobacco" used to obscure the link between cigarettes and
lung cancer.
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But, more controversially, Malhotra and his colleagues also state,
"Physical activity does not promote weight loss."
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Other experts disagree.
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There is a difference between "physical activity" and "exercise training,"
said Gordon Fisher, an assistant professor of nutrition at the
University of Alabama at Birmingham. Both burn calories, but physical
activity consists of nonstructured activities, such as gardening or
walking the dog, whereas exercise means planned, structured and repeated
activities, such as weight training or running.
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snip
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Supervised exercise training can help people lose weight, but most people
don't engage in enough physical activity to promote weight loss,
he told Live Science.
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snip
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"They're ignoring not just thousands, but tens of thousands of articles
showing the importance of exercise for weight control," Hill said.
"I think it's a disservice to the science of exercise physiology."
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snip
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"We've got to quit debating whether it's diet or physical activity.
We have to do both."
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The complete article may be read at the URL above.
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Br J Sports Med doi:10.1136/bjsports-2015-094911
Editorial
It is time to bust the myth of physical inactivity and obesity:
you cannot outrun a bad diet
A Malhotra1, T Noakes2, S Phinney3
http://bjsm.bmj.com/content/early/2015/04/23/bjsports-2015-094911.full
The ‘health halo’ legitimisation of nutritionally deficient products must
end
The public health messaging around
diet and exercise, and their relationship
to the epidemics of type 2 diabetes and
obesity, has been corrupted by vested
interests. Celebrity endorsements of
sugary drinks, and the association of junk
food and sport, must end. The ‘health
halo’ legitimisation of nutritionally
deficient products is misleading and
unscientific. This manipulative marketing
sabotages effective government interventions
such as the introduction of
sugary drink taxes or the banning of junk
food advertising. Such marketing
increases commercial profit at the cost
of population health. The Centres of
Disease Control health impact pyramid is
clear. Changing the food environment—so
that individuals’ choices about what to
eat default to healthy options—will have
a far greater impact on population health
than counselling or education.
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Healthy choice must become the easy choice.
Health clubs and gyms therefore also
need to set an example by removing the sale
of sugary drinks and junk food from
their premises.
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References
Exercise—the miracle cure.
Report from the Academy of Medical Royal Colleges.
Feb 2015.
http://www.aomrc.org.uk/
Luke A, Cooper RS.
Physical activity does not influence obesity risk:
time to clarify the public health message.
Int J Epidemiol 2013;42:1831–6. doi:10.1093/ije/dyt159
[FREE Full text]
http://www.ncbi.nlm.nih.gov/pubmed/23356701
Brownell KD, Warner KE.
The perils of ignoring history: big tobacco played
dirty and millions died. How similar is big food?
Milbank Q 2009;87: 259–94.
doi:10.1111/j.1468-0009.2009.00555.x
[CrossRef][Medline][Web of Science]
Gornall J.
Sugar: spinning a web of influence.
BMJ 2015;350:h231.
doi:10.1136/bmj.h231
[FREE Full text]
Basu S, Yoffe P, Hills N, et al.
The relationship of sugar to population-level diabetes prevalence:
an econometric analysis of repeated cross-sectional data.
PLoS ONE 2013;8:e57873. doi:10.1371/journal.pone.0057873
[CrossRef][Medline]
http://www.nutritionjrnl.com/article/S0899-9007(14)00332-3/pdf
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Noakes T, Volek JS, Phinney SD.
Low-carbohydrate diets for athletes: what evidence?
Br J Sports Med 2014;48:1077–8.
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