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

Question

Quizplus · Accepted Answer

The person with the greater residual volume will appear to have a greater percent body fat because the unmeasured air volume in the lungs will make them appear less dense, which is interpreted as having more body fat in hydrostatic weighing.

Hydrostatic Weighing Is Done on Two Persons Who Are the Same