NEW YORK (Reuters Health) - obese people suffering from heart disease, improve their physical fitness could pay big dividends.
A new study has found that the physical condition, not body weight, is a more important indicator of whether if people with blood vessels clogged in their hearts will perish in the relatively short term.
Overweight or obese even, but have a heart that could tolerate an intense exercise was significantly better than to be a lean person who panted walk a hill.
Unsurprisingly, the study also showed that heart which were less physically fit obese patients and those with large amounts of fat, concentrated around their hips and abdomen, were much more likely to die during the study of 14 years their fitterthinner peers. Poor combination of fitness and this kind of so-called "Central obesity" were even more dangerous, increase the risks of death about seven times, the researchers said.
"The key here is that fitness module prognosis in the patients with coronary heart disease according to their body weight," study leader Dr. Francisco Lopez-Jimenez, a specialist in heart clinic Mayo, Rochester, Minnesota, told Reuters Health. "Have a low fitness and have central obesity seem to be a pretty bad combination."
For the new study, published in the American Heart Journal, Mr. Lopez-Jimenez and colleagues studied 855 men and women is part of a cardiac rehabilitation program. In the past, all had either had heart attacks or severe chest pain episodes related to heart problems. Some had undergone medical or surgical procedures to help unblock blood vessels in the heart.
To assess the ability of patients, physicians had them on the treadmill on foot. They were each assigned a score based on the distance they could walk, and their ability to make oxygen, while exercising - two key aspects of fitness.
Researchers have used body mass index - a ratio of height and weight - to determine if patients were overweight or obese.
Patients who have been adjusted and relatively thin had the lowest chance of dying in the study period and established a group of "control". Adjustment, but overweight patients have approximately twice as likely to die, while those which were fitted but obese had three times the risk of death from the adjustment and control thin.
Things themselves are more complicated for the unfit. Patients with poor fitness notes who were overweight were almost 7 times more likely to die during the study to the control group. But the people of normal weight who were unfit were almost 10 times more likely to die, the researchers found.
In other words, as a person with heart disease remains active, being obese - at least according to their body mass index-does appear not worsen their prognosis. On the other hand, having too many abdominal fat is a problem for people that can withstand plenty of exercise.
"You better if you are unique, and you are better if you have a shorter belt," said Eric Ravussin, an expert on obesity at the Pennington Biomedical Research Center in Baton Rouge, Louisiana).
Ravussin offered several explanations to why obesity does not appear to have the impact could be expected. Obese people generally go the doctor often and are therefore more likely to be tested and treated for a high rate of cholesterol, main risk factor for heart attack and
features, said. The new study did not consider how many patients of cholesterol-lowering drugs took.
Compared to thin people, obese people have more energy reserves to help serious diseases, Ravussin noted the weather. In addition, studies have shown that they seem to be better able to suppress the inflammation associated with damage caused by heart and vessels - although the reasons are not clear.
In any event, Lopes-Jimenez said, the lesson for patients is clear: try to improve your fitness. "It is much easier to become fit rather than become slim," he said. "Someone who has been devoted to an exercise program would agree with that."
SOURCE: http://bit.ly/i25TCj American Heart Journal, March, 2011.
View the original article here
This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.
没有评论:
发表评论