Abstract
Abstract Background The diagnosis of obesity by measuring body mass index (BMI) is limited in some populations. Moreover, BMI does not reflect body fat levels, which are the main factors causing metabolic-related disorders, including cardiovascular disease. There are various methods for measuring percent body fat, such as using a two-electrode bioelectric impedance analysis (BIA), which is considered a portable and easy-to-use tool. In Thailand, the studies on BIA compared to standard method, dual-energy X-ray absorptiometry (DEXA scan) are still limited. Objective To study a correlation of percent body fat from two-electrode BIA and DEXA scan Methods: In this cross-sectional study, percent body fat were measured using three of two-electrode BIA and DEXA scan within the same week. The subjects were categorized into 3 groups according to their BMI: normal group (18.5 - 22.9 kg/m2), overweight and obese group (23 - 29.9 kg/m2) and extreme obesity group (≥ 30 kg/m2). Results A total of 30 study participants, with an average age of 28.07 ± 5.81 years, correlation of percent body fat as measured two-electrode BIA and DEXA scan were Omron®HBF-222T = 0.801, Tanita®BC-730 = 0.922, and Xiaomi®Body Composition Scale 2 = 0.884. All three correlations were strong (r 3 0.75) and statistically significant (p-value <0.001). Moreover, the percent body fat measured by three of two-electrode BIA were no different (p-value = 0.167). Conclusion The percent body fat measured by three of two-electrode BIA and DEXA scan is highly correlated and not statistically difference between three brands. Therefore, two-electrode BIA can be used as alternative method to DEXA scan to measure percent body fat. Presentation: Sunday, June 12, 2022 12:30 p.m. - 2:30 p.m.
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