Determination of body composition by skinfold measurements is based upon the assumption that:
a. people with more body fat have thicker skin.
b. the amount of fat under the skin in specific locations is closely related to total body fat.
c. skinfold thickness in people with more body fat will be lower because fat is compressed more when pinched.
d. skinfold calipers measure the amount of light absorbed and reflected by body tissues such as fat and muscle.
Q. 2Which of the following is a source of error in determining body composition by underwater weighing?
a. Subject movement in the water when being weighed
b. Subject's inability to exhale as much air as possible
c. Inability to determine subject's residual volume accurately
d. All of the above
Q. 3An athlete is weighed underwater and is told that he is 13 body fat. How should he interpret this information?
a. His percentage of body fat is 16 (13 storage fat + 3 essential fat).
b. His percentage of body fat is between 10.3 and 15.7.
c. His percentage of body fat is not higher than 13 but it may be lower.
d. His percentage of body fat is not lower than 13 but it may be higher.
Q. 4How does the Standard Error of the Estimate (SEE) for bioelectrical impedance analysis (BIA) compare to that of underwater weighing, and how should this information be interpreted?
a. SEE is higher for BIA, making BIA a more accurate measure.
b. SEE is higher for BIA, making BIA a less accurate measure.
c. SEE is lower for BIA, making BIA a more accurate measure.
d. SEE is lower for BIA, making BIA a less accurate measure.
e. The SEE is the same, making BIA equally accurate.
Q. 5The standard error in underwater weighing is approximately +/-:
a. 0.7.
b. 1.7.
c. 2.7.
d. 3.7.
Q. 6What is the Standard Error of the Estimate (SEE)?
a. A measure of the accuracy of predictions
b. A measure of the sampling error
c. The standard deviation from the norm
d. The percentage of values that are considered incorrect
Q. 7Which method measures body fat directly?
a. Bioelectrical impedance
b. Skinfold measurement
c. Underwater weighing
d. Chemical analysis of cadavers
Q. 8Indicate whether body mass index (BMI) is an appropriate screening tool to use with each individual described.40-year-old lightly active male
a. Appropriate
b. Inappropriate
Q. 9Indicate whether body mass index (BMI) is an appropriate screening tool to use with each individual described.75-year-old lightly active male
a. Appropriate
b. Inappropriate
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