Research article - (2002)01, 47 - 53
Effects of a Carbohydrate-Electrolyte Drink on Specific Soccer Tests and Performance
Sergej M. Ostojic1,, Sanja Mazic2
1Exercise and Sport Nutrition Laboratory, O.C.A. Sports Medicine Institute, Pancevo, Yugoslavia.
2Institute of Physiology, School of Medicine, University of Belgrade, Belgrade, Yugoslavia.

Sergej M. Ostojic
✉ Exercise and Sport Nutrition Laboratory, O.C.A. Sports Medicine Institute, Kikindska 13/11, Pancevo 26000, Yugoslavia.
Email: sergej@panet.bits.net
Received: 02-05-2002 -- Accepted: 07-06-2002
Published (online): 20-06-2002

ABSTRACT

The aim of this study was to examine the effects of a carbohydrate-electrolyte drink on specific soccer tests and performance. Twenty-two professional male soccer players volunteered to participate in the study. The players were allocated to two assigned trials ingesting carbohydrate-electrolyte drink (7% carbohydrates, sodium 24 mmol.l-1, chloride 12 mmol.l-1, potassium 3 mmol.l-1) or placebo during a 90 min on-field soccer match. The trials were matched for subjects’ age, weight, height and maximal oxygen uptake. Immediately after the match, players completed four soccer-specific skill tests. Blood glucose concentration [mean (SD)] was higher at the end of the match-play in the carbohydrate-electrolyte trial than in the placebo trial (4.4 (0.3) vs. 4.0 (0.3) mmol.l-1, P < 0.05). Subjects in the carbohydrate-electrolyte trial finished the specific dribble test faster in comparison with subjects in the placebo trial (12.9 (0.4) vs. 13.6 (0.5) s, P < 0.05). Ratings of the precision test were higher in the carbohydrate-electrolyte trial as compared to the placebo trial (17.2 (4.8) vs. 15.1 (5.2), P < 0.05) but there were no differences in coordination test and power test results between trials. The main finding of the present study indicates that supplementation with carbohydrate-electrolyte solution improved soccer-specific skill performance and recovery after an on-field soccer match compared with ingestion of placebo. This suggests that soccer players should consume carbohydrate-electrolyte fluid throughout a game to help prevent deterioration in specific skill performance.

Key words: Fluid ingestion, soccer match, blood glucose

Key Points








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