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Related Experiment Video

Updated: Mar 9, 2026

Evaluation of Blood Lactate and Plasma Insulin During High-intensity Exercise by Antecubital Vein Catheterization

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Ecologically Valid Carbohydrate Intake during Soccer-Specific Exercise Does Not Affect Running Performance in a Fed

Mark P Funnell¹, Nick R Dykes², Elliot J Owen³

¹School of Sport, Exercise and Health Sciences, Loughborough University, Leicestershire LE11 3TU, UK. M.Funnell2@lboro.ac.uk.

|January 10, 2017

Summary

Carbohydrate intake did not improve soccer performance in a simulated match. This study found no significant difference in running or sprint times when players consumed a carbohydrate solution versus a placebo.

Keywords:

LIST ecological validity endurance sports drink sprinting

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Published on: March 20, 2012

Area of Science:

Sports Science
Exercise Physiology
Nutritional Science

Background:

Carbohydrate availability is crucial for endurance performance.
Soccer involves intermittent high-intensity exercise, demanding sustained energy supply.
Optimal fueling strategies for soccer performance are still under investigation.

Purpose of the Study:

To evaluate the impact of carbohydrate (CHO) supplementation on soccer-specific running performance.
To determine if CHO intake influences self-selected running speeds and sprint efforts during a simulated soccer match.

Main Methods:

Sixteen male soccer players participated in a simulated match using the Loughborough Intermittent Shuttle Test (LIST).
Players received either a 12% carbohydrate solution or a placebo before and at halftime.
Self-selected running speeds, sprint times, and total distance were measured.

Main Results:

No significant differences were observed in sprint times or total distance covered between the carbohydrate and placebo trials.
Jogging and cruising speeds also showed no significant variations between conditions.
Blood glucose levels were significantly higher at halftime in the carbohydrate trial.

Conclusions:

Consuming a 12% carbohydrate solution before and during a simulated soccer match does not enhance self-selected running or sprint performance in a fed state.
While carbohydrate intake elevated blood glucose, it did not translate to improved on-field performance metrics in this context.