Calculation of body for males is by using the formula of 86.010 x log10 (abdomen - neck) - 70.041 x log10 (height) + 36.76 while for females it is 163.205 x log10 (waist + hip - neck) - 97.684 x log10 (height) - 78.387 [10].
Sailors who exceed the maximum allowable body fat limits of 26 percent for males and 36 percent for females fail the BCA and the overall PFA for the cycle, regardless of PRT results.
The US Navy body fat calculator is accurate to approximately 3–4%. How can I estimate my body fat? You can estimate your body fat percentage visually, using the US Navy body fat calculator, a BIA machine, BodPod, underwater weighing, body-fat caliper measurements, or DEXA scan.
The body fat percentage is the total mass of fat divided by total body mass, multiplied by 100.
All circumference measurements are to be taken two times, sequentially and recorded to the nearest ½ inch. If one of the two measurements differs by more than one-inch, take an additional measurement and compute a mathematical average of the two closest measurements to the nearest ½inch and record this value.
All services use the body composition test. It requires all military personnel to weigh in and have their height measured. When out of height/weight standards, body fat is measured using the circumference test -- measuring the neck and waist.
Passing the test will be a requirement for enlistment, according to a Stars and Stripes report. Male recruits will be required to complete a 1.5-mile run in 16 minutes, 10 seconds; female recruits will have 18 minutes, seven seconds. Recruits who fail will have 48 hours to retest.
DEXA (Dual-Energy X-Ray Absorptiometry)
There are many ways of getting your body fat tested, but most experts will agree that the DEXA (Dual-Energy X-ray Absorptiometry) scan is the most accurate testing technology available.
It's a simple concept. To calculate your body fat percentage, divide the weight of your fat by your total body weight, then multiply by 100.
To convert body fat percentage to kilograms, multiply the body fat percentage by total body weight. If you weigh 80 kg and are 20% body fat, 20% of your body composition is body fat.
It can safely go as low as 10% for women and 3% for men, according to the American College of Sports Medicine (ACSM). With that said, normal body fat percentage ranges that are generally considered healthy for both men and women are provided in the chart below.
Another option is to measure body fat. Men and women need different amounts of fat. For a man, 2–5% fat is essential, 2–24% fat is considered healthy, and more than 25% classifies as obesity. For a woman, 10–13% fat is essential, 10–31% fat is healthy, and more than 32% classifies as obesity.
But, to get reliable results, you have to use the scale at the same time each day and under the same conditions. The best time to step on a body fat scale is first thing in the morning after urinating and before drinking fluid or eating.
Minimum Body Mass Index Standard
Waivers: For applicants with a Body Mass Index (BMI) below 19, the Military Entrance Processing Station (MEPS) Chief Medical Officer (CMO) will determine if there are any underlying medical/psychiatric conditions through a more detailed history/medical record review.
For fighters, it seems to be in the range of 8-14% for males and 12-24% for females, but it depends on the individuals body type, metabolic profile and fighting style.
There are many ways to assess body composition more accurately among individuals than taking BMI measurements. These ways to measure body fat include using skinfold calipers, body circumference measures, hydrostatic weighing, bioelectrical impedance, air-displacement plethysmography, and 3D body scans.
15% body fat: This percentage of body fat usually fits into the “lean and fit” category. Outlines of muscle can be seen, but there is not really a clear separation between them. Muscles and veins can slightly be seen, but are covered by a thin layer of fat. However, the overall body shape is present and can be noticed.
(1.20 x BMI) + (0.23 x Age) - 5.4 = Body Fat Percentage.
Hydrostatic weighing is an incredibly accurate technique for measuring body composition. The technique uses tried and true variables that feature a low percentage of error. For that reason, many experts refer to hydrostatic weighing as the gold standard for measuring body composition.
BMI (your weight in kilograms divided by the square of your height in meters) is a pretty reliable way to determine whether you have too much body fat. That said, BMI is not a perfect measure because it does not directly assess body fat.
A standard scale calculates your weight by simply measuring physical load. A body composition scale, on the other hand, uses bioelectric impedance analysis to determine how much of your total weight is fat-free mass and how much is body fat.
This is what separates SEALs from all other US Special Operations Forces. By the end of Second Phase, candidates must complete timed 2-mile swim with fins in 80 minutes, the 4-mile run with boots in 31 minutes, a 3.5-mile and 5.5-mile swim.
The Navy SEALs fitness test requires you to run 15 miles in 10.5 minutes; swim 500 yards in 12.5 minutes; complete 50 pushups in two minutes; 50 curl-ups in two minutes; and 10 pull-ups in two minutes.
Leaning on new scientific data from "one of the most technologically advanced studies on the topic since the 1980s," the Marine Corps says it will start using X-ray scanners and other equipment to determine the body fat composition of its service members.