Are some living human bodies of the same size, weight, height, age and gender more physically dense?

Question

I would like to get a relatively reasonable answer; not some Pez head's quickly despensed answer.

Answer 1

I have weighed different amounts over the past few years from 175 pounds to 243 pounds. I doubt that my bones changed all that much. Most of the change was the fat on my body. Some change was due to the muscle mass. Someone with a different bone structure could easily have a different density than somebody with the same weight. This could be determined by measuring the volume of water displaced by the two people when fully submerged. The less dense person would displace a larger volume. In a similar manner muscle is more dense than fat and a person who did little exercise would have a different ratio of fat to muscle than a person who regularly exercised even if they weighed the same. The difference in ratio would also result in a difference in density.

Answer 2

If the size and weight are the same, then the density is the same. Density is weight divided by size (volume).

But if you allow the size to be the same but not the weight, then it is certainly true that some people are denser than others. Black people are denser than white people for example, which explains why they don't do well in swimming competitions. If you compare the results for swimming in the olympics with other sports, you'll find that there are far few black people, because their density means they don't float as well.

Men are denser than women, because muscle is denser than fat.
A healthy man has about 10% fat while a healthy woman is about 25% fat. This means that women float better than men.

Addition: I'm wondering why the stuff about black vs white is considered asinine. Black people are a different race from white people with different characteristics. What's asinine about pointing out that this gives them different abilities?

Answer 3

Well, they last guy already mentioned that if 2 people are the same height size (volume) and weight then they have equal average density.

Some people may be more muscular, have thicker or denser bone, and these things will all affect ones density.

BTW the reasoning about black peoples density and not being good swimmers is asinine. I'm not even going to bother getting into why.

Answer 4

clothing manufacturers have distinctive length charts. occasion, A JC PENNEY length 8 (which has by no potential replaced with arrogance sizing) has the comparable measurements as a Speigel 6, and American Eagle/ hollow 4. it relatively is the comparable physique dimensions, yet they simply have distinctive tag sizes on the interior. as long as a man or woman keeps their very own healthful weight and physique measurements, what's there to rigidity approximately? I even have pals that placed on clothing from international extensive, in countless Euro sizes 36/38/40; uk sizes 8/10/12 and each form of u . s . sizes. do no longer enable clothing tags run you bananas.

Answer 5

Body density is basically variable with the relative proportions of body fat and muscle mass.