As I have written before, being thin does not equal fit. Many are thin but don't do appropriate weight-bearing exercises to build muscle, or cardiovascular and aerobics for heart and lung health to be healthy.
The new Mayo study Normal weight obesity: a risk factor for cardiometabolic dysregulation and cardiovascular mortality by Romero-Corral A, Somers VK, Sierra-Johnson J et al. shows how people who are thin and have low muscle tone, and a big amount of belly fat are not healthy. More than 6000 subjects over 20 years of age were studied. They all had normal BMI measurements (18.5-24.9 kg/m(2). They were evaluated for cardiovascular risk factors, body composition and blood measurements. Subjects were followed for almost nine years. Those with the highest percentage of body fat were labeled “normal weight obese” (NOW). They had normal BMI and measurements of >23.1% body fat in men and >33.3% body fat women. The prevalence of metabolic syndrome in subjects with NWO was four times higher than in the normal weight on-obese subjects. Subjects with NWO had higher prevalence of dyslipidaemia, hypertension (men), and CV disease (women), and the women had a twofold higher risk of dying of cardiovascular disease.
Fitness consists of endurance, strength, energy, blood health and flexibility. As I have written under the BMI section, one can have a normal BMI and be overweight or obese. Or they have a high BMI yet be muscular and in shape. They ca also have a low body fat percent but not be fit because they do not do cardiovascular workouts, and they have high blood pressure ad cholesterol. Therefore, more than one fitness test must be employed. A wonderful smart dentist I trained in the summer was probably a size 6 but 39% body fat. That is
technically obese. Here are the links for this section:
**http://www.cbsnews.com/video/watch/?id=6146313n&tag=cbsnewsTwoColUpperPromoArea, http://www.ukmedix.com/weight-loss/thin_people_may_be_obese_say_mayo_clinic4578.cfm. Accessed on February 21, 2010.
My third book, Pocket Guide to Fitness, is available on http://www.authorhouse.com and http://www.amazon.com. If you look up my name on those Web sites, you will find my other books The Boy in a Wheelchair and Life, Work and Play: Poems and Short Stories. These two books are on my Web site http://www.louizapatsis.com.