Which of the following is NOT a skin fold measurement site?

The sternal site is not recognized as a standard skin fold measurement site in body composition assessments. Common skin fold measurement sites are chosen based on anatomical ease and typical fat distribution patterns in the body.

The midaxillary site is located near the armpit and is commonly used because it reflects fat in the upper body. The abdominal site, which involves measuring the fold of skin and underlying fat at the abdomen, is also a recognized area for assessing body fat. Similarly, the thigh site measures fat at the front of the thigh and is a standard practice in skin fold assessments. Therefore, while midaxillary, abdominal, and thigh are all established measurement sites, the sternal site does not serve this purpose in skin fold assessments, making it the correct answer in this context.