• Performance decline towards the end of exercise is commonly seen in intermittent sprint sports such as football, with less distance covered and lower running intensities


• Similar instances of performance drop-off is seen across endurance events too, towards the end of interval sessions, turbo or treadmill efforts and high-intensity racing


• Using carbohydrate supplements both before and during exercise can delay the onset of fatigue and maintain blood glucose levels, potentially improving performance in these sporting situations


Study Aims and Location

• To investigate the effects of GO Isotonic Energy Gels on performance after prolonged high-intensity shuttle running


• This study was completed at Napier Univeristy, Edinburgh



• 7 male football players completed 2 exercise trials, consisting of an intermittent shuttle run that simulates football match-play (a), followed by an intermittent run to exhaustion (b)


• The trial conditions were 43 g CHO per hour from GO Isotonic Energy Gels or 0 g CHO from a non-caloric beverage (placebo)

• Supplements were fed pre-exercise and then every 15-minutes during exercise

• Participants in the gel trial were also given fluids, to offset any negative effects of dehydration

gel study


• There was a 45 % increase in run time to exhaustion in the GO Isotonic Energy Gel trial compared to the placebo trial


• Blood glucose was significantly higher through the test and at the point of exhaustion when using GO Isotonic Energy Gels




1. Supplementing with GO Isotonic Energy Gels, pre-exercise and throughout intermittent running, delays fatigue and improves running capacity by 45 %


2. For high-intensity training sessions, matches, time-trials and races, maintaining high carbohydrate intake with isotonic gels significantly improves exercise performance


3. When performance is the goal, GO Isotonic Energy Gels are king

Patterson, S. D., & Gray, S. C. (2007). Carbohydrate-gel supplementation and endurance performance during intermittent high-intensity shuttle running. International Journal of Sport Nutrition and Exercise Metabolism, 17(5), 445-455.