Avaliação da aplicabilidade de fórmulas preditivas de peso e estatura em homens adultos

Abstract

Objective: The objective of this study was to evaluate the validity of equations that predict weight, height and body composition in adult men. Methods: The sample consisted of 98 healthy men aged from 20 to 58 years. In order to analyze the equations, weight, height, knee height, arm span, half-arm span, calf and arm circumference and subscapular skinfold thickness were collected. Body composition was determined by bioimpedance. Results: Estimated weights were significantly different from measured weights (p<0.001). The only equation that estimated height properly was that validated for adult Caucasian men. Both arm span (r=0.789; d=2.67; p<0.001) and half-arm span (r=0.790; d=2.51; p<0.001) overestimated height. When weight and height estimates were used to calculate body mass index, underweight was overestimated and overweight was underestimated, except when height was estimated with the equations for adult Caucasian men. Conclusion: The equation to estimate height validated for adult Caucasian men estimated the height of adult young men properly; the other validated equations presented significant differences. It is important to validate the equations assessed in this study in other population groups, making sure to use the estimated weights and heights to calculate body mass index.