Body Composition - Hydrostatic Weighing
Hydrostatic Weighing (which is also known as underwater weighing) is a classic method when measuring body composition.
How to conduct the test:
-The person should sit on a specialized seat that gets rid of all the air from their lungs,
-Then the person would get lowered into the tank until all body parts are underwater.
The person must remain motionless underwater while the underwater weight is recorded.
-This procedure should be repeated several times to get a dependable underwater weight measure.
Equipment required:
Reliability:
The test's reliability applies to level in which a test is consistent and stable in measuring what it is intended to measure. "Reliability will depend on how the test is carried out and the individual's level of motivation to perform the test" (Brian Mac- Hydrostatic weighing, 2013).
From this website, I have learnt that reliability is being able to show dependable results as well as them being consistent.
Validity:
"The test's validity relates to the degree in which the test actually measures and what it claims to measure. This test provides a mean to monitor the effect of training on the athlete's physical development" (Brian Mac- Hydrostatic weighing, 2013).
From this website, I have learnt that validity is a measurement method and it is there to make sure that what you are measuring is what is supposed to be measured.
This is a video of how the hydrostatic weighing should be carried out.
Hydrostatic Weighing (which is also known as underwater weighing) is a classic method when measuring body composition.
How to conduct the test:
-The person should sit on a specialized seat that gets rid of all the air from their lungs,
-Then the person would get lowered into the tank until all body parts are underwater.
The person must remain motionless underwater while the underwater weight is recorded.
-This procedure should be repeated several times to get a dependable underwater weight measure.
Equipment required:
- Hydrostatic stainless steel weighing tank, including underwater mounted chair and scale
- Weighted belt and nose clip.
- A simply set up may include a chair and scale suspended from a diving board over a pool or hot tub.
- Source: http://www.scribd.com/doc/123362712/skinfold-measurement
Reliability:
The test's reliability applies to level in which a test is consistent and stable in measuring what it is intended to measure. "Reliability will depend on how the test is carried out and the individual's level of motivation to perform the test" (Brian Mac- Hydrostatic weighing, 2013).
From this website, I have learnt that reliability is being able to show dependable results as well as them being consistent.
Validity:
"The test's validity relates to the degree in which the test actually measures and what it claims to measure. This test provides a mean to monitor the effect of training on the athlete's physical development" (Brian Mac- Hydrostatic weighing, 2013).
From this website, I have learnt that validity is a measurement method and it is there to make sure that what you are measuring is what is supposed to be measured.
This is a video of how the hydrostatic weighing should be carried out.