How many times should skinfold measurements be taken at each site for accuracy?

Taking skinfold measurements three times at each site is critical for ensuring accuracy and reliability. This method helps to account for any variability that may arise from measurement technique, skin tension, or the condition of the skinfold itself. By averaging the three measurements taken at each site, the effects of any outlier values can be minimized, leading to a more accurate estimate of body fat composition. This practice is based on the principle of repeated measures, which enhances precision by reducing the error margin inherent in a single measurement.

Additionally, many protocols and guidelines recommend this three-measurement approach to standardize practices among practitioners, ensuring consistency over time and between different assessors. It is also beneficial for identifying any trends or significant changes in body composition if the measurements are taken repeatedly at intervals.