Increase the percentage of ingested carbohydrate oxidised from 62% (2:1 ratio) to 74% (1:0.8 ratio) Jeukendrup, A. E., Jentjens, R. L., & Moseley, L. (2005). Nutritional considerations in triathlon. Sports Medicine, 35(2), 163-181. INFORMED SPORT: Beta Fuel is tested under the Informed Sport programme and does not contain any banned substance Long stages of 200km mean that riders can be riding for around 5-6 hours which means fuelling on the bike is of critical importance to ensure they have sufficient energy to get through these stages without losing any time.

In the first study of its kind, we tested feeding athletes 120g of Science in Sport Beta Fuel per hour, singularly, and combined across our patented range of gels, chews and drinks. The previously recommended intake for endurance fuelling was 90g per hour. These results have never been seen before and change everything we thought we knew about endurance fuelling guidelines, and the performance potential in elite endurance racing: It is suggested that during endurance exercise (more than 2.5 hours) 80–120 g of carbohydrate per hour should be consumed to maintain blood glucose levels and prevent fatigue.

Informed sport tested and registered

I also started using the Beta Fuel chews. The chews come in Orange and Lemon flavours and provide 46g of carbohydrate. In my opinion these are a welcome change, providing a jelly-like texture different to any other SIS product, the lemon flavour being my personal preference. They’re not too chewy and are easy to consume on both the bike and the run, personally my favourite product from the new range! Beta Fuel gels

The key difference in the new SiS Beta Fuel range is the change in the ratio of maltodextrin to fructose, previously being 2:1 and now moving to 1:0.8. In comparison to the 2:1 ratio, the 1:0.8 ratio has now been proven to: Science In Sport's Beta Fuel is a carb-dense drink that has changed my race-day nutrition. The taste is good and for most races the 80g of carbs in a 500ml bottle mean that gels aren't needed. It's kind on the stomach too, with no 'tolerance build-up' needed. While the price is on the high side, this is a genuinely brilliant product. This would give a total of 240 grams of carbohydrate over the standard distance triathlon. This provides a varied nutrition solution in different formats, flavours and textures whilst maintaining the quality of your nutrition so you can train or race at the best of your ability. Our science-based solution, the combination of maltodextrin and fructose in an isotonic formula, is still the key to SiS Beta Fuel, as the transportation of nutrients across the intestinal wall is a rate limiting factor in carbohydrate oxidation during exercise.

Professional Advice

In the first study of its kind, we tested feeding athletes 120g of Science in Sport Beta Fuel per hour, singularly, and combined across our patented range of gels, chews and drinks. The previously recommended intake for endurance fuelling was 90g per hour.

We recommend consuming 50g (3 scoops) with 500ml of water every 45-60 min of exercise or you can consume up to 4 servings per day with or between meals as part of a carbohydrate loading strategy in the run up to an event. Once prepared consume within 24 hours. What our customer’s say: The Beta Fuel powder is our scientifically superior fuelling option designed for endurance providing high carbohydrate in an easily digestible formula. With an optimised ratio of Maltodextrin to Fructose (1:0.8), Beta Fuel provides 80g of carbohydrate in a single convenient isotonic formular with minimal risk of GI discomfort to maintain optimal performance. Our new SiS Beta Fuel formula is leading a revolution in endurance fuelling by using an optimised ratio of maltodextrin to fructose, providing a science-based complete fuelling solution for runners. As an endurance athlete, meaning your events typically last more than two hours, you need to take in between 80-120g of carbohydrate per hour. The Science in Sport Beta Fuel Dual Source Energy Drink delivers an optimised 80g of carbohydrate in a single, convenient isotonic fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance. As part of the 2022 Runner’s World Sports Nutrition Awards, we enlisted a 200-strong panel of testers – made up of ordinary runners and experts – to slurp and munch their way through a variety of market-leading energy gels, drinks and chews to find the best on the market.

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So, in 2018, SiS Beta Fuel was developed to enable us to increase carbohydrate oxidation to more than 60 grams per hour and to achieve that, we combined another form of carbohydrate, which has a different transporter, fructose. Because fructose has a different transporter than glucose, a dual source formulation allows for greater carbohydrate delivery to our muscles during exercise, therefore increasing how much carbohydrate we can use. Planning on how long you will need to fuel for is vital to getting your nutrition right. It’s better to overestimate and carry more than underestimate and “bonk” during your event. Tsintzas, O. K., Williams, C., Wilson, W. & Burrin, J. (1996). Influence of carbohydrate supplementation early in exercise on endurance running capacity. Medicine and science in sports and exercise, 28(11), 1373-1379. It takes around 500g of carbohydrate to fill your glycogen stores and, at most, this will last you for 60-90 minutes of running at 55-75 percent of your maximal heart rate,' explains leading sports dietician Renee McGregor. 'The faster you go, the sooner your stores will deplete.'

x SiS Beta Fuel Chew Bars, one of each of the Lemon and Orange flavours – 80 grams (40 g per bar – 7 g per chew) These results have never been seen before and change everything we thought we knew about endurance fuelling guidelines – and the performance potential in elite endurance racing. Who is SiS Beta Fuel for? Now with the gel range, there are two different types of gels, the Beta Fuel gels and then the Beta Fuel gels with nootropics. The key difference between the two types of gels is the nootropics which are added for cognitive stimulation.

Saving Time

Understanding which energy powder is right for you and suits your needs for training and competition is key to fuelling efficiently. At Science in Sport, we have three options and it’s important to understand the key differences between each of these powders so you can make the right choice for you. But firstly, why energy powder? The science states the new ratio is easier to digest but also has lower volume to consume, (if you were to try and match the carbohydrate content from other gels) which adds to this with less volume being better on the GI system!