Abstract
Abstract The aim of this study was to describe the correlation between body composition data obtained through DXA and through skinfolds strategy, with some of their respective formulas, in sprinters. The sample consisted of 15 male sprinters (23.81 years ± 3.11; 70.06 Kg ± 4.38; and 179.13 CM ± 5.16) all high performance runners of speed and barriers events (100m, 200m, 400m, 110m with barriers and 400m with barriers). The athletes were submitted to DXA evaluation procedure and to skinfolds collection (triceps, biceps, subscapular, supra iliac, abdominal, medial thigh and calf) and the results were calculated through four distinct equations: Slaughter, Faulkner, Lázari and Boileau. The respective DXA correlations (0.60; 0.81; 0.23 and 0.48) and the equations predicted by skinfold strategy were calculated using Pearson correlation. Among the equations used, Faulkner's was the one presenting highest correlation value when compared to DXA protocol, although all of them aimed to estimate values for BF%.
Highlights
The maximum speed performance in athletics is a multifactorial phenomenon
The aim of this study was to describe the correlation between body composition data obtained through dual-energy X-ray absorptiometry (DXA) and through skinfolds strategy, with some of their respective formulas, in sprinters
The sample consisted of 15 male sprinters (23.81 years ± 3.11; 70.06 Kg ± 4.38; and 179.13 CM ± 5.16) all high performance runners of speed and barriers events (100m, 200m, 400m, 110m with barriers and 400m with barriers).The athletes were submitted to DXA evaluation procedure and to skinfolds collection and the results were calculated through four distinct equations: Slaughter, Faulkner, Lázari and Boileau
Summary
The maximum speed performance in athletics is a multifactorial phenomenon. It requires an interrelation of some determining factors, such as strength development rate, muscle power, maximum dynamic strength and anaerobic power[1].Changes in body composition during athletes preparation period for the most varied modalities are part of a variables set that must be taken into account during physical abilities preparation and development[2,3]. The maximum speed performance in athletics is a multifactorial phenomenon. It requires an interrelation of some determining factors, such as strength development rate, muscle power, maximum dynamic strength and anaerobic power[1]. Changes in body composition during athletes preparation period for the most varied modalities are part of a variables set that must be taken into account during physical abilities preparation and development[2,3]. Dual-energy X-ray absorptiometry (DXA), considered the gold standard for assessing body composition, is a fast and non-invasive method. It is based on 3 components indirect measurement: mineral bone density, fat-free mass and fat mass[2,4]
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