Tap-the-Fat

Body fat percentage (BFP) is an important health indicator for a variety of health applications. There are several methods to measure body fat percentage, including (1) dual energy x-ray absorptiometry (DEXA), (2) skinfold measurement, and (3) bioelectrical impedance analysis (BIA). First, DEXA is used as the golden standard for measuring BFP with the highest accuracy [4]. However, this method is costly as it can only be used by trained medical staff. Second, in the skinfold measurement, the performance depends on the skinfold caliper and the user's proficiency [1--3]. To accurately measure BFP, it is necessary to use the expensive caliper with a trained user. Moreover, although a self-administered skinfold caliper exists, it exhibits low accuracy [1]. Third, BIA enables quick and usable BFP measurements. However, its performance varies depending on the quality of equipment [2]. However, BIA equipments are relatively expensive and difficult to access in many countries.