This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why is body mass index (BMI) the most widely used method to determine whether people are overweight ... (Read 48 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
on: Aug 6, 2018
Why is body mass index (BMI) the most widely used method to determine whether people are overweight or obese?

Question 2

Assume John is an 18-year-old male who weighs 180 pounds and has 25 percent body fat. What is the recommended body weight at 15 percent body fat for John? List the steps that you use in your computation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mirabriestensky

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Aug 6, 2018
Answer to Question 1

Because of its simplicity and measurement consistency across populations, BMI is the most widely used method to determine overweight and obesity. Due to the various limitations of previously mentioned body composition techniques-including cost, availability to the general population, lack of consistency among technicians and laboratories, inconsistent results between techniques, and standard error of measurement of the procedures-BMI is used almost exclusively to determine health risks and mortality rates associated with excessive body weight.

Answer to Question 2

The recommended body weight for John at 15 body fat is 158.8 lbs. Following are steps:
Determine the pounds of body weight that are fat (FW) by multiplying his body weight (BW) by the current percent fat (F) expressed in decimal form (FW = BW  F). 180  0.25 = 45 lbs.
Determine lean body mass (LBM) by subtracting the weight in fat from the total body weight (LBM = BW - FW). (Anything that is not fat must be part of the lean component.) 180 - 45 = 135 lbs.
Desired body fat percentage (DFP) = 15
Compute recommended body weight (RBW) according to the formula RBW = LBM / (1.0 - DFP). 135 / (1.0 - 0.15 ) = 158.8 lbs.


itsmyluck

  • Member
  • Posts: 546
Reply 2 on: Aug 6, 2018
Thanks for the timely response, appreciate it

Dinolord

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Body plan of a crustacean, as represented by a shrimp Body plan of a crustacean, as represented by a shrimp
Body fluid compartments of an adult. Body fluid compartments of an adult.
Anatomy Diagram Of Human Body Anatomy Diagram Of Human Body
Important Trace Elements in the Body Important Trace Elements in the Body
The energy set-point view that is the basis of many people’s thinking about hunger and eating. The energy set-point view that is the basis of many people’s thinking about hunger and eating.
Eating Disorders and Body Image Eating Disorders and Body Image
Video: Types of energy transfer reactions: oxidation-reduction reactions and ATP generation reactions

For a complete list of videos, visit our video library