________ weighing is a body fat measurement technique that determines body volume by measuring body weight when under water and body weight in air and entering these values into a formula that accounts for differences in density between fat tissue and lean tissue.Multiple choice question.UnderwaterAir displacementBioelectrical

Hydrostatic weighing is a technique used to determine an individual's overall body density.  The weight of the individual is measured when their body is completely submerged in water.  Because the volume of air in the respiratory system affects the measured underwater weight, the individual must exhale completely before entering the water.  However, residual volume, the volume of air that always remains in the respiratory system, must also be accounted for.By comparing an individual's in-air weight to their underwater weight, their total body volume can be determined.  The density of the body Db excluding any air in the respiratory system is calculated with the in-air mass of the individual mair, the individual's total body volume Vtotal, and an estimate of residual volume Vres by:Db=mairVtotal−Vres𝐷b=𝑚air𝑉total-𝑉resEquation 1Body density can be used to calculate an individual's body fat composition, the percentage of total body mass that is made up of fatty tissue.  Human fatty tissue has an average density of 0.9 kg/L, and the density of water is 1 kg/L.  The acceleration due to gravity is 10 m/s2.Adapted from Siri, WE, Body composition from fluids spaces and density. Nutrition 1956 Springer Nature. Question 14A bone sample (specific gravity = 3) completely immersed in isopropyl alcohol (specific gravity = 0.8) is subject to a buoyant force of 4 N.  What buoyant force would the same bone sample experience when immersed in water?A.2.4 NB.4.0 NC.5.0 ND.12 N

Which body volume measurement technique determines body fat by measuring the amount of space a person takes up inside a small chamber, like a BodPod?Multiple choice question.Bioelectrical impedanceUnderwater weighingSkinfold thicknessAir displacement

Select all that applyIdentify two methods that estimate body fat by measuring body weight and/or body volume.Multiple select question.air displacementskinfold thicknessbioelectrical impedanceunderwater weighing

Which of the following body fat assessment techniques relies on the principle that water and electrolytes conduct electricity?Multiple ChoiceBioelectrical impedanceAir displacementSkinfold measurementsUnderwater weighing

Underwater weighing estimates _____.Multiple choice question.body weightbody massbody volume