Agreement of body weight, body fat percentage values between two body composition analyzers

摘要

In order to assess the agreement of body weight (BW), body fat index values between total body (foot to hand) and segment body (foot to foot) analyzers, we measured BW and body fat percentage (BF%) of 37 subjects by both analyzers in the same condition. As a result, the Pearson correlation of body weight and BF% values were r(BW) = 1.00 and r(BF%) = 0.81, respectively (p < 0.0001). The mean difference of BW and BF% (total minus segment) were d(BW) = -0.281kg and d(BF%) = 0.662% respectively; and the standard deviation of these differences were S-d(BW) = 0.143 and S-d(BF%) = 3.898. In addition, the 95% limits of agreement of difference of BW was (-0.567 to +0.005) and (-7.135 to +8.459) for difference of BF%. In conclusion, the results indicated that agreement of BW and BF% values between the two analyzers is acceptable, thus they might be interchangeable for epidemiological studies.