Correlação das variáveis antropométricas e fisiológicas com o desempenho no Crossfit

Pouco se sabe acerca da relacao entre fatores antropometricos e fisiologicos com o desempenho no Workout of the day (WOD) 15.5 em praticantes de CrossFit®. Neste estudo foram analisadas e relacionadas as variaveis massa corporal, massa livre de gordura, % de gordura, VO 2 maximo e forca muscular. Um total de 15 adultos foram divididos de acordo com o desempenho no WOD15.5: melhores tempos (27,9 ± 6,5 anos; 2,7 ± 1,2 anos de experiencia; n=7) e piores tempos (29,2 ± 3,9 anos; 2,2 ± 0,7 anos de experiencia; n=8). Foram realizados, em dias separados, avaliacao da composicao corporal, forca maxima, Vo2 maximo e o WOD15.5 (thrusters e remo indoor). Aqueles com melhor desempenho no WOD15.5 apresentaram menor percentual de gordura (10,0 ± 2,1 vs 16,4 ± 4,3 %; p = 0,004), maior forca relativa (1,93 ± 0,29 vs 1,62 ± 0,18 para o agachamento posterior; 1,77 ± 0,23 vs 1,43 ± 0,14 para o agachamento frontal; 1,14 ± 0,18 vs 0,97 ± 0,10 para o snatch e 1,56 ± 0,14 vs 1,21 ± 0,11 para o clean), respectivamente. Houve uma correlacao positiva e significativa (p < 0,05) entre o % de gordura e o tempo do WOD15.5 (r=0,60), bem como correlacoes negativas entre o tempo do WOD15.5 com a forca muscular do snatch (r=-0,72), clean (r=-0,86), agachamento posterior (r=-0,65), frontal (r=-0,72) e com o VO 2 maximo (r=-0,79). Em conclusao, individuos com menor percentual de gordura, maior forca muscular e VO 2 maximo apresentam melhor desempenho no WOD 15.5 da Crossfit®. ABSTRACT Correlation of anthropometric and physiological variables with Crossfit® performance Little is known about the relationship between anthropometric and physiological factors with performance in the Workout of the day (WOD) 15.5 in practitioners of CrossFit®. In this study, were analyzed and associated the variables body mass, fat-free mass, % body fat, VO2 max and maximal strength. A total of 15 adults were divided according to their performance in the WOD15.5 of CrossFit®: best time performance (n= 7; 27.9 ± 6.5 years; 2.7 ± 1.2 years of training experience) and worst time performance (n=8; 29.2 ± 3.9 years; 2.2 ± 0.7 years of training experience). Were performed, in separate days, assessment of body composition, maximal strength tests, cardiovascular fitness and the WOD15.5 (thrusters and indoor rowing). The volunteers with the best performance in the WOD15.5 presented lower body fat percentage (10.0 ± 2.1 vs 16.4 ± 4.3 %; p = 0.004), higher relative muscle strength (1.93 ± 0.29 vs 1.62 ± 0.18 for the back squat; 1.77 ± 0.23 vs 1.43 ± 0.14 for the frontal squat; 1.14 ± 0.18 vs 0.97 ± 0.10 vs for the snatch and 1.56 ± 0.14 vs 1.21 ± 0.11 for the clean). There was a positive and statistically significant correlation (p < 0.05) between body fat percentage and WOD15.5 time (r=0.60), as well as negative correlations between WOD15.5 time and muscle strength in the snatch (r=-0.72), clean (r=-0.86), back (r=-0.65), frontal squat (r=-0.72) and V02max (r=-0.79). In conclusion, subjects with lower body fat, higher muscle strength and V02max present an improved performance in the WOD15.5.