During the test, you lie on an X-ray table for about 10minutes while the scanner measures your body fat, muscle, and bone mineraldensity.ĭEXA is "an emerging technique that holds a lot of promise," Bryanttells WebMD. Taking a shower beforehand reallymakes the reading inaccurate!" DEXA ScanningĭEXA is "dual energy X-ray absorpitometry" - the same imagingtechnology doctors use to measure bone density to determine osteoporosis risk,explains Bryant.
Pinch test body fat calculator plus#
"Just keep in mind that the scales might be off by 5%, plus orminus. "Even though they may not be accurate, itmay be good for tracking changes with a diet and exercise program," saysMcCrory. There also are handheld versions that use this same technology. "However, withall this factored in, the scales are an easy, at-home way to keep track of yourweight and fat-loss progress."
Even your menstrual cycle affects this reading.
So it's important tostrictly follow the guidelines for weighing yourself - time of day, fluid andfood intake. "The problem is, these devices are very sensitive to hydration - howmuch fluid is in your body," Bryant tells WebMD. The verdict: Convenient, but not always the mostaccurate. The scales send a harmless electrical current up through yourbody to "read" the amount of fat body mass and lean body mass -calculating your percentage of body fat. "Bioelectrical impedance analysis" has been added to traditionalbathroom scales. "But if gives an excellent BMImeasurement!" "The BMI doesn't give you bodyfat measurement," says McCrory. "BMI tends tocorrelate pretty closely with health risks associated with being overweight orobese." "It's a good starting point, a really good way to get a basic estimateof whether you are overweight or not," says Bryant. If you are short, or verymuscular, results tend to be less accurate.
Pinch test body fat calculator free#
The verdict: Free and readily available good for assessinghealth risks but doesn't measure body-fat percentage. Though itdoesn't address percentage of body fat or muscle, it helps health careprofessionals quickly assess which patients may be at risk of health problemslinked to excess weight. The BMI was developed using large, population-based studies. Plug these numbers into a BMI calculator to learn whether you areobese, overweight, or normal weight. This is a simple calculation, using the most basic tools - your height andweight. To learn which are worth your time and money, WebMD got ratings from Bryantand from two more top exercise physiologists: Megan McCrory, PhD, an energymetabolism scientist with the Jean Mayer USDA Human Nutrition Research Centeron Aging at Tufts University in Boston and Len Kravitz, PhD, senior exercisephysiologist for IDEA Health and Fitness Association. And thanks to today's technology wizards, some verygood new devices are available to measure your body fat. You know about the old standard measuring tools, like the body mass index(BMI) and the tape measure. "The only way to know how you're doing isthrough some form of body-composition assessment." "Preserving lean tissue and losing body fat - that's what you need tostrive for," Bryant says. "Most people focus only on losing weight, not on the fat," Cedric X.Bryant, PhD, chief exercise physiologist with the American Council on Exercise,tells WebMD.
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