Today, people include a healthier lifestyle in their daily routines. One measure of your physical shape is your BMI. However, BIA (Bioelectric Impedance Analysis) is a much better measure. This indicator was previously only available in clinics and sports clubs; But now it can be measured directly from the wrist using smartwatches like the Galaxy Watch 4 or Galaxy Watch 5.
A team from Louisiana State University, the Pennington Biomedical Research Center, and the University of Hawaii Cancer Center collaborated to determine how accurate body composition measurements are on the Galaxy Watch 4 and Galaxy Watch 5, and how that affects users who wear them.
109 people participated in this study, of which 75 people completed the test. Galaxy Watch 4 readings were compared to clinical measurements using energy X-ray absorptiometry (DXA) scanning and laboratory octopolar bioelectrical impedance analysis.
As a result, it was found that BIA smartwatches have the ability to measure stable body composition with comparable accuracy but less than laboratory measurements. BIA measurements on the Galaxy Watch 4 and Galaxy Watch 5 correlated approximately 97% and 98% with the results of two reference methods using laboratory benchmarks. This means the BIA readings you get on the Galaxy Watch 4 or Galaxy Watch 5 are fairly accurate.
The study also found that having access to such an accurate measurement on the wrist would help people increase their physical activity. Samsung recommends measuring BIA at the same time of day, on an empty stomach, after going to the bathroom, when you are not on your period, before exercising, and after removing metal objects from your body.