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The 3-site skinfold measurement formula for men is a common method used to estimate body fat percentage and includes specific sites that are well-supported in the literature for accurate assessment. The correct answer, which is the midaxillary site, is not included in this particular 3-site formula.
In men, the typical measurement sites are the chest, abdomen, and triceps. These sites are chosen because they represent areas that generally reflect subcutaneous fat distribution and are accessible for measurement with calipers. On the other hand, the midaxillary site is not one of the three primary locations used in this calculation, which highlights its exclusion from the formula.
Understanding the rationale for these specific measurement sites helps to ensure accurate body composition assessments, as they have been tested and validated for this purpose in male populations.