| Abstrakt: |
Objective: To compare measurements of body mass index (BMI), bioelectrical impedance assessment (BIA), and infrared (IR) body composition measurements in this pre-adolescent population and determine if they can be used interchangeably to predict childhood disease.Design: One hundred fourteen pre-adolescent basketball players ages 8 to 13 years old were the subjects of this study (49 male and 65 female). Height, weight, IR body composition, BIA, and BMI were determined for each subject on the same day.Results: Mean body composition for females between the ages of 8 and 13 years was 18.8% for BMI, 18.3% for BIA, and 24.2% for IR. Mean body composition for males between the ages of 9 and 12 years was 22.6% for BMI, 13.5% for BIA, and 26.3% for IR. There was no significant correlation for body composition between BMI, BIA, or IR measurements for boys or IR for girls. There was significant correlation for girls between BMI and BIA measurements. BIA values for boys were consistently lower across the population as compared with BMI and IR results.Conclusions: IR, BMI, and BIA are not correlated to each other and cannot be used interchangeably when reporting or monitoring body composition. BMI should not be used as a measure of body composition for adolescent males involved in recreational sports. BMI, IR, and BIA are not indicators of body composition on an individual basis and should not be used as a basis for prediction of childhood disease. There continues to be no accurate, cost-effective means to assess individual body composition by a rapid, noninvasive methodology. [ABSTRACT FROM AUTHOR] |
