Abstract
To assess performance of a portable bioimpedance monitor for measurement of body composition in dogs. 24 client-owned dogs. Percentage body fat was measured via dual-energy x-ray absorptiometry (DEXA) and with a portable bioimpedance monitor, and body condition score (BCS) was measured by use of a 9-integer scale. Although the precision of the bioimpedance monitor was good, this varied among dogs. Body position (standing vs sternal) had no effect on bioimpedance results. There was a significant association between results determined via DEXA and bioimpedance, but this association was weaker than between DEXA and BCS. When agreement was assessed via Bland-Altman plot, the bioimpedance monitor under- and overestimated values at high and low body fat percentages, respectively. In 9 dogs, body fat measurements were taken before and after weight loss to determine the proportional loss of tissue mass during weight management. There was a significant difference in the estimated percentage of weight lost as fat between the DEXA and bioimpedance methods. Although percentage body fat measured by use of a portable bioimpedance monitor correlated well with values determined via DEXA, the imprecision and inaccuracy in dogs with high percentage body fat could make the monitor inappropriate for clinical practice.
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