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A comment on The First Female Crash Dummy Has Arrived. Parent comment

Re:The First Female Crash Dummy Has Arrived by yellowapple on Monday November 07, 2022 @12:51PM (#33509359)
A 38" waist would make someone about a foot or two wide (12.1 inches assuming a perfectly circular waist, but most folks' waists are wider than they're "long") - which is curvy, sure, but not severely so. Average waist size for European women is around 30", for reference - so only a couple inches less wide.

Then again, I'm an American male (who wears size 44 pants), so needless to say my perspective might be skewed.

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Re:The First Female Crash Dummy Has Arrived by snovv_crash on Monday November 07, 2022 @01:45PM (#33510262)
A simple quadratic model would suggest a 60% weight increase of the 38" over the 30". That's enormous.
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Re:The First Female Crash Dummy Has Arrived by yellowapple on Monday November 07, 2022 @03:11PM (#33511684)
A "simple quadratic model" is about as appropriate for extrapolating human weight from human dimensions as a microwave is appropriate for cooking steak.
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Re:The First Female Crash Dummy Has Arrived by snovv_crash on Tuesday November 08, 2022 @01:40AM (#33516510)
Definitely not optimal but it gets the job done?
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Re:The First Female Crash Dummy Has Arrived by yellowapple on Tuesday November 08, 2022 @06:43PM (#33525798)
Not really; indeed, my point is that body metrics are surprisingly difficult to model given the wide variances.

You could probably get closer to an accurate model by identifying the fixed weight of an adult's skin/bones/organs. Going from critically emaciated to fit would mostly entail adding muscle, which is denser than fat.

From there, the proportion of added muscle v. added fat when increasing waist circumference would be the deciding factor in accurately estimating weight; that proportion is highly dependent on the individual and one's level of daily activity.

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Re:The First Female Crash Dummy Has Arrived by porknubbins on Monday November 07, 2022 @10:13PM (#33515508)
From the bodybuilding literature I’ve seen weight and body part circumference changes are a little more linear than what you’re suggesting. Though there may be some people who you can model as spheres.
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Re:The First Female Crash Dummy Has Arrived by snovv_crash on Tuesday November 08, 2022 @10:08AM (#33519784)
Spheres would be cubic, we're just talking about cylinders here. And the difference between the 30" and 38" waist will be mostly by better approximating a cylinder at the waistline, the underlying skeletal structure isn't changing much.
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Re:The First Female Crash Dummy Has Arrived by alistairSH on Monday November 07, 2022 @02:43PM (#33511260)
A 38" waist is massive on most bodies.

At my current 150lbs and 5'7", I have a <30" waist. When I was 180lbs (got fat in college) it was near 38". That 30lb difference took me from athletic to obese. Granted, I'm male, but I'd think that on a 5'4" women, that 38" waist was visibly even larger.

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