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Nutrición Hospitalaria

versión impresa ISSN 0212-1611

Resumen

PORTAO, J. et al. Assessment of body fat in physically active young people: anthropometry vs bioimpedance. Nutr. Hosp. [online]. 2009, vol.24, n.5, pp.529-534. ISSN 0212-1611.

Objective: To assess the level of agreement between the anthropometrical method and several bioimpedance (BIA) devices to estimate the fat mass in a group of physically active young people. Subjects: 55 students of Physical Activity Sciences and Sports of the INEFC of Barcelona; 29 men (age: 24.7 ± 4.7 years; BMI: 23.4 ± 1.8) and 26 women (age: 22.9 ± 3.5; BMI: 21.5 ± 1.9). All of them voluntarily gave their informed consent. Materials and method: Anthropometrical assessment was done according to the International Society for the Advancement Kinanthropometry (ISAK) protocol, the fat % was calculated by the Siri's equation and was compared with that obtained by 4 different BIA devices: Biospace Inbody 720, Tanita BC400, Tanita TBF-521, and Omron BF-300. To assess the level of agreement of the results, the interclass correlation coefficient and the Bland Aldman method were used. Results: The estimated fat mass, in men, by the anthropometrical method was 7 ± 2.2 kg. The results by the BIA systems were: 7.4 ± 3 kg; 5.6 ± 2.2 kg; 5.7 ± 2.5 kg, and 7.4 ± 3 kg for Biospace Inbody 720, Tanita BC400, Tanita TBF521, and Omron BF300, respectively. In women, the results were 10.4 ± 2.7 kg of fat mass by means of the anthropometrical method and 10.3 ± 2.9 kg, 11 ± 3.3 kg, 11.5 ± 3.0 kg, and 10 ± 2.9 kg for Biospace Inbody 720, Tanita BC400, Tanita TBF521, and Omron BF300, respectively. Conclusions: In the male group, the level of agreement between anthropometrics and BIA devices was moderate-poor, whereas in women there was a good correlation between both techniques for estimating the body fat when the Biospace Inbody 720 and Tanita BC400 devices were used.

Palabras clave : Body composition; Fat mass; Skin folds.

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