The effect of rapid weight loss on body composition and circulating markers of creatine metabolism in judokas
Rapid weight loss affect body composition and biomarkers of creatine metabolism
Abstract
We evaluated the effects of 7-day rapid weight loss (RWL) intervention on body composition and biomarkers of creatine metabolism in eight elite judokas during a pre-competition period. RWL induced a significant drop in weight (81.7 ± 10.7 kg at baseline vs. 76.8 ± 10.3 kg at follow-up; P < 0.001), fat mass (12.6 ± 5.6 kg vs. 9.2 ± 4.0 kg; P = 0.003) and fat-free mass (69.1 ± 7.3 kg vs. 67.6 ± 7.7 kg; P = 0.05), accompanied by an increase in serum creatinine levels at follow up (104.0 ± 10.5 µmol/L vs. 114.9 ± 10.2 µmol/L; P = 0.009). An acute restriction of food and fluid intake appears to negatively affects fat-free mass and indices of kidney function in judokas.
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