010-111 · Question #94
What is the standard site for the measurement of the subscapular skinfold?
The correct answer is B. One centimeter below the inferior angle of the scapula. The subscapular skinfold is measured one centimeter below the inferior angle of the scapula, along a fold line angled approximately 45 degrees inferolaterally.
Question
What is the standard site for the measurement of the subscapular skinfold?
Options
- ADirectly over the inferior angle of the scapula.
- BOne centimeter below the inferior angle of the scapula.
- CFive centimeters below the inferior angle of the scapula.
- DFive centimeters to the left of the inferior angle of the scapula.
How the community answered
(69 responses)- A3% (2)
- B75% (52)
- C6% (4)
- D16% (11)
Why each option
The subscapular skinfold is measured one centimeter below the inferior angle of the scapula, along a fold line angled approximately 45 degrees inferolaterally.
Placing the caliper directly over the inferior angle of the scapula does not account for the mandatory 1 cm inferior displacement that defines the standardized subscapular site.
Standardized anthropometric protocol places the subscapular skinfold site one centimeter below the inferior angle of the scapula, with the fold lifted along a natural cleavage line running diagonally at roughly 45 degrees from horizontal. This precise offset from the bony landmark ensures inter-rater reproducibility and has been validated in population-based body composition research. Strict adherence to site identification is critical for generating reliable and comparable skinfold data.
A site five centimeters below the inferior angle is too far inferior and does not correspond to any recognized standardized skinfold measurement location.
Shifting the measurement laterally from the inferior angle does not correspond to any accepted skinfold site and would produce invalid, non-reproducible body composition estimates.
Concept tested: Subscapular skinfold anatomical site identification
Source: https://www.acsm.org/education-resources/books/acsms-guidelines-for-exercise-testing-and-prescription
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