Thursday, August 21, 2008

Fat and Fit?

Several studies from researchers at the Cooper Institute in Dallas have shown that fitness — determined by how a person performs on a treadmill — is a far better indicator of health than body mass index. In several studies, the researchers have shown that people who are fat but can still keep up on treadmill tests have much lower heart risk than people who are slim and unfit.

In December, a study in The Journal of the American Medical Association looked at death rates among 2,600 adults 60 and older over 12 years. Notably, death rates among the overweight, those with a B.M.I. of 25 to 30, were slightly lower than in normal weight adults. Death rates were highest among those with a B.M.I. of 35 or more.

But the most striking finding was that fitness level, regardless of body mass index, was the strongest predictor of mortality risk. Those with the lowest level of fitness, as measured on treadmill tests, were four times as likely to die during the 12-year study than those with the highest level of fitness. Even those who had just a minimal level of fitness had half the risk of dying compared with those who were least fit.

During the test, the treadmill moved at a brisk walking pace as the grade increased each minute. In the study, it didn’t take much to qualify as fit. For men, it meant staying on the treadmill at least 8 minutes; for women, 5.5 minutes. The people who fell below those levels, whether fat or thin, were at highest risk.

The results were adjusted to control for age, smoking and underlying heart problems and still showed that fitness, not weight, was most important in predicting mortality risk.




1 comment:

Debbie said...

Hi Jess, my name is Debbie Valette.I am from New Zealand currently living in Provo Utah. I hope you don't mind me contacting you but iI was looking through the missionary website and noticed you served your mission in France. Our company is experiencing huge growth internationally and we're very excited as we have just opened in France! Due to our rapid expansion we are currently looking for sharp, bi-lingual people to join our dynamic team.
I would love to talk with you about your experience in France, and the possibilities our growth is enabling.

my e-mail is
or you can call on 801-850-4133

Thanks Jess, I appreciate your time.
Warm regards,Debbie Valette