Courtney Peterson, M.D. Discusses More Accurate Way of Measuring BMI (video) University of Alabama at Birmingham Share Print E-Mail Loading video... Caption A new study published today in the Journal of the American Medical Association Pediatrics shows that tri-ponderal mass index (TMI) estimates body fat more accurately than the traditional BMI in adolescents. Credit UAB Public Relations Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.