How Higher Carbohydrate Intake Preserves Power During Prolonged Cycling

On September 21, 2026, ProCyclingUK published a review detailing a controlled endurance nutrition study alongside an assessment of a high capacity carbohydrate product. The publication examined Maurten Gel Mix 480 and discussed underlying research involving trained cyclists and triathletes. These athletes completed three hours of moderate cycling under three distinct nutritional conditions. The test compared consuming pure water, 60 grams of carbohydrate per hour, and 120 grams of carbohydrate per hour.

This review provides crucial context for endurance athletes navigating contemporary race plans. Those plans increasingly target higher hourly carbohydrate availability depending on duration, intensity, and individual tolerance.

Higher Intakes Preserve Late Stage Power

The primary conclusion from the reviewed study focuses directly on the preservation of power during long efforts. Researchers found that critical power declined after the three hour ride across all three testing conditions. Fatigue is inevitable during prolonged moderate cycling. However, the decline became noticeably smaller as the athletes increased their carbohydrate intake.

The 120 grams per hour condition produced the highest post ride critical power and higher whole body carbohydrate oxidation. In simple terms, consuming more fuel did not completely stop the athletes from getting tired. It simply reduced the performance cost of a long training session. The athletes who took in the maximum tested amount of carbohydrate retained a greater ability to push hard at the end of their ride.

This finding shifts the focus from merely surviving a long session to maintaining high quality output in the final miles. It is vital to recognize that the product format itself is not necessarily the source of this preserved power. The review notes that controlled comparisons of hydrogel carbohydrates with nutrient matched conventional solutions have not consistently shown superior performance. Equivalent conventional carbohydrate drinks provide similar carbohydrate availability and gastrointestinal comfort.

The true advantage lies in the total hourly volume of carbohydrate rather than the specific presence of alginate and pectin. The ProCyclingUK review also describes separate endurance running research where adding hydrogel components did not improve outcomes. In that running study, the hydrogel addition failed to improve blood glucose response, carbohydrate oxidation, gastrointestinal symptoms, or time to exhaustion performance. This reinforces that the practical value of products like Gel Mix 480 is convenience.

The Three Hour Moderate Cycling Protocol

The underlying research featured a tightly controlled protocol using trained endurance athletes. Cyclists and triathletes were tasked with three hours of moderate cycling. The study measured post ride critical power to evaluate how much fatigue accumulated under each fueling strategy. The ProCyclingUK review does not provide the exact participant numbers, specific laboratory methods, or critical power test protocols.

We do know that the highest intake group utilized 120 grams of carbohydrate per hour. Maurten Gel Mix 480 supplies exactly 120 grams of carbohydrate and 480 calories per sachet. The product uses a combination of maltodextrin and fructose as its primary carbohydrate sources. It contains no caffeine and relies on sodium alginate, pectin, xanthan gum, and sodium bicarbonate.

The preparation methodology for this specific product is highly detailed. Maurten recommends mixing the powder thoroughly with 200 milliliters of water and letting it rest for five minutes. The manufacturer also specifies using water that contains no more than 80 milligrams of calcium per liter. This rigid water chemistry requirement can make preparation slightly more complicated when traveling or using unfamiliar bottled water.

The product is sold in the United Kingdom in a box of six servings priced at 40 pounds. That price equates to approximately 6.67 pounds per individual sachet. The ProCyclingUK review characterizes this specific product as useful for riders who value a compact fueling system. It offers a neutral flavor and allows for gradual intake during long events.

This compact format is particularly valuable when opening multiple sticky gel wrappers or eating solid food becomes highly inconvenient. Conversely, the review describes the product as less compelling for short rides or easy endurance sessions. Riders with modest carbohydrate targets or those who already fuel effectively with ordinary food may not need such a concentrated option. The article presents the product as a premium convenience choice.

Strategic Fueling for the Adult Endurance Athlete

This research highlights a crucial shift in how ambitious adult athletes should approach long sessions. For years, many riders tried to get by on minimal calories to manage weight or simplify their logistics. We now have clear evidence that higher fuel intake protects muscle output during extended work. When older athletes allow their power to drop drastically late in a ride, they accumulate deep fatigue.

That late stage fatigue severely compromises their ability to train effectively in the following days. Hitting my forties brought a harsh reality check. The track workouts were not getting slower, but the days after them felt significantly heavier. Instead of forcing my old Tuesday and Thursday intensity schedule, I looked at the data on Masters athletes and muscle protein synthesis.

I pushed my second hard session to Friday, allowing an extra forty eight hours of low intensity recovery. My total weekly volume stayed the same, but the quality of my intervals skyrocketed. That scheduled recovery only works if the body is properly fueled during the actual work. Protecting late stage power through adequate nutrition ensures you are not digging an unnecessary recovery hole.

For athletes examining extreme race fueling trends, the goal is finding a realistic hourly target rather than blindly forcing maximum intake. The ProCyclingUK review explicitly warns that riders should never attempt 120 grams per hour for the first time on race day. Gastrointestinal tolerance differs substantially between individual riders. A rider targeting 60 grams of carbohydrate per hour could comfortably consume half a sachet during an hour.

You must begin with an intake you already tolerate and increase it gradually in training. It is also critical to separate your fuel planning from your hydration planning. A concentrated 200 milliliter flask is a fuel delivery system, not a complete hydration drink. In hot conditions, riders need additional water and electrolytes alongside their concentrated carbohydrate flask.

You can adjust your water intake independently according to the temperature and your sweat rate. Keeping these systems separate prevents forced overhydration when you only need calories. It also prevents dangerous dehydration when you need fluid but cannot stomach more sugar. This holistic view of nutrition aligns perfectly with broader scientific consensus in the sport.

In September 2026, the International Journal of Sport Nutrition and Exercise Metabolism published the UCI Sports Nutrition Project position statement online. This massive project synthesized the expertise of 54 researchers across the globe. They organized their conclusions around 10 core themes for cyclists. These themes included in competition fueling, recovery, energy availability, and sports foods alongside age specific considerations.

The UCI project proves that sports nutrition is a multidimensional performance and health issue. It is not solely a question of race day calories. Establishing clear ride fueling and recovery targets supports your long term health just as much as your finishing sprint. For athletes aged 35 to 65, the most useful sector development is this increasing emphasis on individualized fueling and long term sustainability.

Ultimately, while higher carbohydrate intakes can preserve late stage power during demanding sessions, mature athletes must build this tolerance gradually and treat concentrated fuel as a separate tool from their fundamental hydration strategy.

Sources

1. Maurten Gel Mix 480 review: is 120g of carbs in one flask useful for ...
2. UCI Sports Nutrition Project: Position Statement on ...