Carbohydrate ingestion and soccer skill performance during prolonged intermittent exercise |
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| Authors: | Ajmol Ali Clyde Williams |
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| Institution: | 1. Institute of Food, Nutrition and Human Health, Massey University , Auckland, New Zealand a.ali@massey.ac.nz;3. School of Sport and Exercise Sciences, Loughborough University , Loughborough, UK |
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| Abstract: | Abstract The aim of this study was to investigate the effect of ingesting a carbohydrate-electrolyte solution, during the 90-min Loughborough Intermittent Shuttle Test, on soccer skill performance. Seventeen male soccer players ingested either a 6.4% carbohydrate-electrolyte solution or placebo solution equivalent to 8 ml · kg?1 body mass before exercise and 3 ml · kg?1 body mass after every 15 min of exercise, in a double-blind randomized cross-over design, with the trials separated by 7 days. The evening before the main trial, the participants performed glycogen-reducing exercise on a cycle ergometer (80 min at 70%Vdot]O2max) and were then fed a low-carbohydrate meal. After a 12-h overnight fast, they performed The Loughborough Soccer Passing Test before and after every 15 min of exercise. Analysis of the combined skill test data showed a significant time effect (P = 0.001) with differences between 0–45 and 75–90 min (P < 0.05). There was a 3% reduction in skill performance from before to after exercise in the carbohydrate-electrolyte trial, whereas in the placebo trial the decrease was 14% (P = 0.07). In conclusion, skill performance during the simulated soccer activity appeared to deteriorate in the last 15–30 min of exercise. However, providing 52 g · h?1 carbohydrate during exercise showed a tendency to better maintain soccer skill performance than a taste-matched placebo. |
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| Keywords: | Fluid ingestion football Loughborough Intermittent Shuttle Test Loughborough Soccer Passing Test sprint performance |
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