Influence of carbohydrate supplementation on skill performance during a soccer match simulation

Jan 11, 2012Journal of science and medicine in sport

Carbohydrate supplements and their effects on soccer skill performance during a match simulation

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Abstract

Carbohydrate supplementation improved shooting performance metrics during simulated soccer match-play.

Shooting performance showed a significant improvement with carbohydrate supplementation, as indicated by higher shot speed and overall index scores.
No notable effects were observed on passing or dribbling performance with carbohydrate intake.
Blood glucose levels were higher at 45 minutes and during half-time for participants receiving carbohydrate supplementation compared to those receiving only electrolytes.
A reduction of 30±1% in blood glucose concentrations was recorded between half-time and 60 minutes in the carbohydrate group.

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OBJECTIVES: This study investigated the influence of carbohydrate supplementation on skill performance throughout exercise that replicates soccer match-play.

DESIGN: Experimentation was conducted in a randomised, double-blind and cross-over study design.

METHODS: After familiarization, 15 professional academy soccer players completed a soccer match simulation incorporating passing, dribbling and shooting on two separate occasions. Participants received a 6% carbohydrate-electrolyte solution (CHO) or electrolyte solution (PL). Precision, success rate, ball speed and an overall index (speed-precision-success; SPS) were determined for all skills. Blood samples were taken at rest, immediately before exercise, every 15 min during exercise (first half: 15, 30 and 45 min; second half: 60, 75 and 90 min), and 10 min into the half time (half-time).

RESULTS: Carbohydrate supplementation influenced shooting (time×treatment interaction: p<0.05), where CHO attenuated the decline in shot speed and SPS index. Supplementation did not affect passing or dribbling. Blood glucose responses to exercise were influenced by supplementation (time×treatment interaction: p<0.05), where concentrations were higher at 45 min and during half-time in CHO compared with PL. Blood glucose concentrations reduced by 30±1% between half-time and 60 min in CHO.

CONCLUSIONS: Carbohydrate supplementation attenuated decrements in shooting performance during simulated soccer match-play; however, further research is warranted to optimise carbohydrate supplementation regimes for high-intensity intermittent sports.

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Influence of carbohydrate supplementation on skill performance during a soccer match simulation

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