Lilia V Castro-Porras1, Mario E Rojas-Russell2, Javier Villanueva-Sánchez3, Malaquías López-Cervantes1. 1. 1Faculty of Medicine,National Autonomous University of Mexico,Av. Universidad 3000,Cd. Universitaria,CP 04510,Coyoacán,Mexico City,Mexico. 2. 2Faculty of Higher Studies-Zaragoza,National Autonomous University of Mexico,Mexico City,Mexico. 3. 3Departamento de Nutrición y Alimentos Funcionales,Centro de Desarrollo de Productos Bióticos,Instituto Politécnico Nacional,San Isidro,Yautepec,Morelos,Mexico.
Abstract
OBJECTIVE: To develop a new predictive equation for fat mass percentage (%FM) based on anthropometric measurements and to assess its ability to discriminate between obese and non-obese individuals. DESIGN: Cross-sectional study. SETTING: Mexican adults.ParticipantsAdults (n 275; 181 women) aged 20-63 years with BMI between 17·4 and 42·4 kg/m2. RESULTS: Thirty-seven per cent of our sample was obese using %FM measured by air-displacement plethysmography (BOD POD®; Life Measurement Instruments). The fat mass was computed from the difference between weight and fat-free mass (FFM). FFM was estimated using an equation obtained previously in the study from weight, height and sex of the individuals. The %FM estimated from the obtained FFM showed a sensitivity of 90·3 (95 % CI 86·8, 93·8) % and a specificity of 58·0 (95 % CI 52·1, 63·8) % in the diagnosis of obesity. Ninety-three per cent of participants with obesity and 65 % of participants without obesity were correctly classified. CONCLUSIONS: The anthropometry-based equation obtained in the present study could be used as a screening tool in clinical and epidemiological studies not only to estimate the %FM, but also to discriminate the obese condition in populations with similar characteristics to the participant sample.
OBJECTIVE: To develop a new predictive equation for fat mass percentage (%FM) based on anthropometric measurements and to assess its ability to discriminate between obese and non-obese individuals. DESIGN: Cross-sectional study. SETTING: Mexican adults.ParticipantsAdults (n 275; 181 women) aged 20-63 years with BMI between 17·4 and 42·4 kg/m2. RESULTS: Thirty-seven per cent of our sample was obese using %FM measured by air-displacement plethysmography (BOD POD®; Life Measurement Instruments). The fat mass was computed from the difference between weight and fat-free mass (FFM). FFM was estimated using an equation obtained previously in the study from weight, height and sex of the individuals. The %FM estimated from the obtained FFM showed a sensitivity of 90·3 (95 % CI 86·8, 93·8) % and a specificity of 58·0 (95 % CI 52·1, 63·8) % in the diagnosis of obesity. Ninety-three per cent of participants with obesity and 65 % of participants without obesity were correctly classified. CONCLUSIONS: The anthropometry-based equation obtained in the present study could be used as a screening tool in clinical and epidemiological studies not only to estimate the %FM, but also to discriminate the obese condition in populations with similar characteristics to the participant sample.
Authors: Rafael Molina-Luque; Aina M Yañez; Miquel Bennasar-Veny; Manuel Romero-Saldaña; Guillermo Molina-Recio; Ángel-Arturo López-González Journal: Int J Environ Res Public Health Date: 2020-10-29 Impact factor: 3.390