Table of Contents:
Hydrostatic weighing for body fat
Video taken from the channel: PerformanceCorps
Bod Pod: Measuring Body Composition (Body Fat) at the Exercise Physiology Core Laboratory
Video taken from the channel: uvahealth
Procedure for Assessing Body Composition via Underwater Weighing
Video taken from the channel: Travis Erickson
Hydrostatic Body Fat Testing (Real Footage + Results)
Video taken from the channel: GetFitForever
Underwater weighing testing
Video taken from the channel: University of South Australia
Hydrostatic Weighing (underwater weighing) Lab & Calculating Body Fat %
Video taken from the channel: Sarah Grace FreshFitnHealthy
How to Perform Hydrostatic Weight
Video taken from the channel: PolyFit CP
Hydrostatic weighing, also called ‘underwater weighing’, is the best way to measure your body fat percentage, hands down. If you’re serious about finding out.Hydrostatic weighing, also referred to as “underwater weighing”, “hydrostatic body composition analysis”, and “hydrodensitometry” is a technique for measuring the density of a living person’s body. It is a direct application of Archimedes’ principle, that an object displaces its own volume of water.
Before we can determine whether or not hydrostatic weighing is accurate, we first have to define what it is. Hydrostatic weighing is a type of body composition determination, meaning it measures body fat and lean mass. Using Archimedes Principle of Displacement, hydrostatic testing measures one’s total body density.
Hydrostatic weighing, also referred to as “underwater weighing,” “hydrostatic body composition analysis,” and “hydrodensitometry,” is a technique for measuring the mass per unit volume of a patient’s body.The procedure is based on Archimedes’ principle, using the weight of the body outside the water, the weight of the completely immersed body (a weight that may be negative if the body in question is less dense.Enter the subjects weight underwater (in kilograms): Report this value to the nearest 0.01 kg. Typically, this value would be between -3.50 and +5.00 kg. Remember, an individual can weigh less than zero underwater.Hydrostatic weighing borrows Archimedes’ principle in physics to measure body fat and lean mass through full underwater submergence.
In the case of body composition testing, lean mass is denser than water, while fat mass is less dense than water. Therefore, a person with more fat will weigh less under water than someone with more muscle.During hydrostatic weighing, how does underwater weight compare between over fat and lower fat individuals? method to assess body composition that uses very low dose beams of x-ray energy to measure total body fat mass, fat distribution pattern, and bone density. dual energy x-ray absorptiometry.procedure: The dry weight of the individual is first determined.
The subject, in minimal clothing, then lies prone in bath tub with warm water, expels all the air from their lungs, and is lowered into the tank until all body parts are emerged. The person must remain motionless underwater while the underwater weight is recorded. This procedure is repeated three times to get a dependable underwater weight measure.Hydrostatic Weighing Hydrostatic weighing, also known as Hydrodensitometry or underwater weighing, is a classic measure of body composition. The test involves the subject being lowered into a water tank until all body parts are emerged, expelling all the air from the lungs, then weighed.
Body fat includes essential body fat and storage body fat. Essential body fat is a base level of fat that is found in most parts of the body. It is necessary fat that maintains life and reproductive functions.
The amount of essential fat differs between men and wome.Use a tape measure to determine your waist, wrist, hip and forearm circumference. Then input your gender and measurements below to receive a body fat index based on average values. The body fat index is not an indicator of fitness level since the calculation is made with no regard to height or weight.Underwater weighing, also known as hydrostatic weighing, is a method of calculating body fat percentage based off body density.
Underwater weighing takes place in specially designated pools and/or water tanks designed for hydrostatic measurement. The test is usually only available at universities, research facilities, and some fitness centers.Hydrostatic underwater weighing (HUW) calculates a person’s body density and body volume to estimate their body composition.
HUW works by comparing a person’s weight.Learn how to perform hydrostatic weight. Body composition test with the BOD POD explained by Dr Wagner at Utah State University Duratio.
Hydrostatic weighing is the gold standard for measuring body fat percentage (if done correctly unlike me). It is a technique for measuring the mass per unit volume (density) of a person’s body.
List of related literature:
| |
| from The Encyclopedia of Nutrition and Good Health | |
| |
| from The Ketogenic Diet: A Complete Guide for the Dieter and Practitioner | |
| |
| from Laboratory Manual for Exercise Physiology | |
| |
| from Discovering Nutrition | |
| |
| from Physics of the Life Sciences | |
| |
| from Kettlebells For Dummies | |
| |
| from Understanding Motor Development: Infants, Children, Adolescents, Adults | |
| |
| from Foundations of Physical Activity and Public Health | |
| |
| from Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate | |
| |
| from Human Biology: An Evolutionary and Biocultural Perspective |
19 comments
I had mine done recently and my weight is 181 pounds but on the digital scale I was weighting 200 pounds so which is more accurate. Also it had me 36 percent body fat which is considered obese but when I had my fat percentage done at the gym they had me at 26 percent body fat.
Hello SARAH GRACE. BRAVO, good work. Good school life!!! New experience!!! Lemon, orange, tea, honey!!! Have a beautiful day. Bye. Rudi from EUROPA.
looking good Noah!!!!!! seen you after so many years on youtube, I’m thinking of getting into bodybuilding and was looking for good ways to get fat% checked, thanks!!
Thank you very much you explained a whole chapter in less than 8 min:)
My sister and I had this done over the summer. It’s definitely harder than it looks. I’m surprised you were required to put your hair up in a bun/ponytail because when my sister got in the tank, she had her hair up in a ponytail but the instructor told her to take it down.
I’m not convinced that allowing for the density of water to 4SF makes much sense. The biggest source of error must be the ability of the subject to empty their lungs or not when many would be quite stressed.
Loved seeing this!! So interested in all this so thanks for sharing:)
Wow, I cannot believe my mom stooped so low…
My mom called my doctor and said to him “What’s the most accurate measurement for weighing?”
The doctor said “An underwater weighing test”
And just like that, my mom said “Yes. When can my son and my daughter can take it?” and the doc said “Today at 2pm.”
So, I didn’t bother taking a shower and so did my sister too, so I had to get into a special swimming suit(tight pants…Ugh).
My sister said “Can I pull my hair down to a ponytail?” The doctor said “No.”
So my sister with her long, blonde hair went underwater with 8 seconds and had she must enjoyed it..but I didn’t.
Were you wearing compression shorts? I had my hydrostatic weighing session done last month and I didn’t know I had to wear compression shorts so they provided me a pair to wear for the session. Apparently if I had worn the swim trunks that I brought with me, my results wouldn’t have been very accurate.
Does the variation refer to +2% of fat ( ex: measure at 13% range 11-15%) or 2% of the data (ex: measure at
13% range 12.74-13.26%)?
No problem. Another interesting thing they told me (and my girlfriend who also had her underwater weighing done) not to wear any jewelry and a hair tie. My girlfriend had her hair up in a ponytail and they told her to remove the hair tie. When she went underwater face first, all her hair covered her face and I thought that was hilarious.
Overall, it was a good experience. I might do it again later this year or sometime next year.
This video is programmed into a slideshow for our body comp. masters course. Dr. Kevin Finn posted it.
Thats interesting, ya we just wore swim trunks but I will be sure to do it in compression shorts next time if they think it will be more accurate. We plan on having it done every 2 months as we drop weight. Thanks for the info.
I thought it was 19.5-32% was healthy for females!? You look great so it doesn’t matter ☝��️
I had mine done early in the morning during the winter and the water was warm. What time of the day did you had yours done?
Much talk about air being trapped. Does the body hair not matter (maybe more than on the head)?
Quite nice system. Does this method have many clinical applications nowadays? Is it expensive to do?
Haha seems scary as crap! �� I love your laugh though, it’s so contagious ��
I had my body fat tested at UVA Spring of 2012. I am 5″6″ and weighed around 130 pounds. MY body fat was 38%!!! Obese. I did Crossfit and ate healthy so completely freaked out! Judy Weltman (who performed the Bodbod testing) was wonderful but baffled as well. After a year of searching WHY I had a normal BMI but obese, I found a homeopathic doctor tell me why. I had heavy metal poisoning and my fat cells were protecting me from the toxins causing my cells to be inflamed. Anyway, I followed the homeopathic doctors system and saw immediate changes. I still weigh the same but much thinner through the waist where the fat had accumulated. I can tell you how I did it if you send me your info. Toxins are everywhere and they are making people (even thin people) have too much visceral fat.