Development of a Biolectrical Impedance Analyzer Prototype for Body Fat Mass Assesment Azzahra Khairunisa(a), Annisa Dian Maharatri(a), Sheva Dwi Intan Yulied(a), Umiatin Umiatin(a), Taryudi Taryudi(b), Bedy Purnama(c), Rista Putri Nur Ifa(d), Muhammad Abidin(d)
(a) Physics Study Programme, Faculty of Mathematics and Natural Science, Jakarta State University, Jakarta, Indonesia, 13220
(b) Electrical Engineering Department, Universitas Negeri Jakarta, Jakarta State University, Jakarta, Indonesia, 13220
(c) Center of Excellence Artificial Intelligence for Learning and Optimization, Telkom University, Bandung, Indonesia, 40252
(d) Frenmed Inovasi Bangsa, Depok, West Java, Indonesia, 16414.
Abstract
Obesity is a medical condition characterized by the excessive accumulation of body fat tissue. It is a risk factor for various diseases, including stroke, cardiovascular disorders, cancer, and diabetes, which contribute to high mortality rates. Measurement of body fat mass is critical in assessing individual health risks. The Bioelectrical Impedance Analysis (BIA) is widely used method for estimating body fat mass (FM), fat-free mass (FFM), and body fat percentage (BF) by transmitting a low alternating electrical current at a specific frequency through the body and measuring the resulting voltage to determine body impedance. This impedance value is subsequently used to analyze body fat composition. The present study aims to develop a Bioelectrical Impedance Analyzer (BIA) prototype using the AD5933 module and an Arduino microcontroller. Frequency optimization (25 kHz, 50 kHz, and 100 kHz) as well as measurement method optimization (hand-to-hand, foot-to-foot, and hand-to-foot) were performed. The findings indicate that body fat percentage measurements using the hand-to-hand, foot-to-foot, and hand-to-foot methods at 50 kHz demonstrated greater stability compared to those obtained at 25 kHz and 100 kHz. Furthermore, at 50 kHz, the hand-to-hand method achieved an accuracy of 96.40%, the foot-to-foot method 97.71%, and the hand-to-foot method 97.96%. In conclusion, the development of a BIA prototype demonstrated that the hand-to-foot method at 50 kHz provided most optimal performance for body fat percentage measurement.
Keywords: Bioelectrical Impedance Analysis (BIA), body fat percentage, AD5933 module
