Hydrostatic weighing is done on two persons who are the same in all respects except that one has a greater residual volume than the other.Residual volume is not measured directly but estimated and assumed to be the same for both people.According to the results from the hydrostatic weighing,the person with the greater residual volume will appear to have ________ percent body fat compared with the person with the smaller residual volume.
A)essentially the same
B)a greater
C)a lower
D)None of the choices are correct.

Question

Quizplus · Accepted Answer

Hydrostatic weighing calculates body density, which is then used to estimate body fat percentage. Residual volume is an estimation of the air that remains in the lungs after a maximal exhalation, and it can affect the accuracy of the calculation. If the assumption of the same residual volume for both individuals is incorrect, the person with the greater residual volume will appear to have a lower body density and a higher body fat percentage compared to the person with the smaller residual volume, even if they have the same amount of body fat. Therefore, the best choice is B) a greater.

Hydrostatic Weighing Is Done on Two Persons Who Are the Same