Which of the following statements is true about skinfold tests?

The correct answer is that skinfold tests help measure subcutaneous fat. Skinfold measurements involve using calipers to pinch specific areas of the skin, allowing for the assessment of fat thickness at various sites of the body. This method is specifically designed to estimate the amount of subcutaneous fat, which is the fat located just beneath the skin, as opposed to visceral fat, which surrounds internal organs.

These measurements provide valuable information that can help assess body composition, contribute to understanding overall health, and evaluate changes in body fat over time with appropriate diet or exercise regimens. Skinfold tests are relatively practical and widely used in both clinical and fitness settings for their effectiveness in estimating body fat percentage.

Understanding the other options: They do not measure only muscle mass, nor are they universally accurate for all body types; the results can vary based on a person's specific anatomy, hydration level, and other factors. Furthermore, while some knowledge is beneficial for administering skinfold tests effectively, extensive training is not necessarily required for basic applications, making these tests more accessible than some other body composition methods.