Valoración de un nuevo método de estimación de la grasa corporalsu utilidad en el Sistema de Clasificación de luchadores de Lucha Canaria

Abstract

In this paper we have made the comparison of two different methods for calculating the fat component of body weight in athletes. One through a new mathematical formula, the CUN-BAE (Clínica Universitaria de Navarra-Body Adiposity Estimation), described by Gomez-Ambrosi et al in 2012, and another using dual X-ray absorptiometry or DXA, which is considered the gold standard in the study of body composition. If both methods can be comparable, or at least to have a good approximation between them, the application of the new formula in the wrestlers classification process could greatly reduce costs and streamline the all process. So we've selected a sample of 28 fighters from Canarian Wrestling who held technical category of Destacados, and were divided into four groups according to their sub-category: A (n = 5; 38.5%), B (n = 4, 13.8%), C (n = 13; 48.1%) and D (n = 6; 12%), representing 32% of the total population of Destacados at regional level. All were scanned with DXA and the formula was applied. The CUN-BAE estimate showed a very good correlation coefficient (r = 0.71; P <0.001), but the estimate of body fat is much higher than that calculated in our study with dual X-ray absorptiometry, and it overestimates the fat component weight by 33.8% on average. This overestimation of the weight of the fat componentdoes not allow its use in the current wrestlers classification process.