Fruit performance bar: the category replacing gels and chews
TL;DR: A fruit performance bar is fruit-based sports nutrition designed as fuel during exercise. Not a snack, not a gel, not a brick. My bar weighs 25g, provides 20g of carbs in a 2:1 glucose-fructose ratio, and contains 0% artificials. One to two bars per hour, alongside your sports drink. For cycling, MTB, running, and triathlon.
A fruit performance bar is fruit-based sports nutrition, formulated as fuel during exercise. Not a snack. Not a gel. Not a brick. My fruit performance bar delivers 80g of carbohydrates per 100g via a 2:1 glucose-fructose ratio, the gold standard in endurance sports. For the full fueling story, see my complete guide on energy bars for endurance sports.
What exactly is a fruit performance bar?
A fruit performance bar is a specific category of sports nutrition. It distinguishes itself from regular bars by one principle: the formulation is entirely focused on energy delivery during physical exertion, not before or after. A fruit performance bar contains only functional ingredients, without artificials, and is optimized for absorption while you move.
My fruit performance bar weighs 25g per piece. That weight is no coincidence. It is the ideal portion for easy dosing during a ride or run. Small enough to eat without stopping. Large enough to provide measurable fuel. A 25g bar delivers 20g of carbohydrates, immediately available during exercise.
The fruit energy bar category for sports has existed for some time, but for a long time, it was filled with products that were too sweet, too dry, or too slowly digestible. I am rebuilding the category from the ground up. Fruit as a matrix. Carbs as a function. Texture as ease of use.
Why is the 2:1 glucose-fructose ratio so important?
Your gut has two separate transport channels for carbohydrates: one for glucose, one for fructose. Both channels have a maximum. The glucose channel saturates at approximately 60g per hour. Anyone who needs more carbs (and you do if you are riding or running harder than 70% of your VO2max) must also activate the second channel.
The 2:1 glucose-fructose ratio does exactly that. By combining glucose and fructose in a two-to-one ratio, you utilize both channels simultaneously. Currell & Jeukendrup (2008) showed in their study that 2:1 at 90g/hour improves time-trial performance by 8% compared to glucose alone. Jeukendrup & Moseley (2010) later confirmed that a 2:1 solution accelerates gastric emptying and fluid uptake versus glucose alone. Rowe et al. (2022) reported a 7.6% gain in a 5km time trial.
For cyclists, triathletes, and MTB riders performing for more than 90 minutes, this is no detail. It is the difference between constant output and acidosis. My fruit performance bar is built entirely around that 2:1 ratio. The carbohydrates come from fruit. 80g carbs per 100g. Transparent. Verifiable. Functional.
What makes a fruit performance bar different from a gel or a regular bar?
The three dominant forms of sports nutrition during exercise are gels, compact bars, and the fruit performance bar. They theoretically fulfill the same need (carbohydrates while exercising), but they do so in fundamentally different ways.
| Characteristic | Gel | Compact bar | Fruit performance bar Eagle |
|---|---|---|---|
| Texture | Liquid / slimy | Dry, tough | Soft, chewable |
| Carbs per 100g | 60–70g | 55–65g | 80g |
| 2:1 ratio | Sometimes | Rarely | Always |
| Artificials | Often | Often | Never |
| Vegan | Varies | Varies | Yes |
| Gluten-free | Varies | Not always | Yes |
| Ease of eating while moving | Difficult without water | Difficult at high intensity | Designed for moving |
Gels are avoided by many athletes due to the texture and because they need water to wash them down. Compact bars (also called "bricks" in sports) require too much chewing at high heart rates. The fruit performance bar fills the gap: sufficient structure to dose, soft enough to eat during exertion. No water needed to wash it down. No wrapper wrestling at 40 km/h. For the complete consideration between formats, see my blog fruit bar vs energy gel: when what?
Which sports is a fruit performance bar suitable for?
I focus on four disciplines: cycling, mountain biking, running, and triathlon. What these sports have in common: prolonged exertion where depleted carbohydrates are the first performance bottleneck. During efforts longer than 60 to 90 minutes, your glycogen stores (your internal sugar reserve) drop to a critical level. From that moment on, you must ingest additional carbs from outside to maintain your pace.
A fruit performance bar is not a luxury in that context. It is a strategic tool. Cyclists riding for several hours ideally need 60 to 90g of carbs per hour. Combine a sports drink (6-8% carbs, 30-60g per bottle) with 1 to 2 Eagle bars per hour, and you are right in that zone. Without gel, without brick, without artificials.
The same principle applies to runners and triathletes, but with attention to the fact that runners are constantly subjected to vertical load. Costa et al. (2017) showed in their review that runners feel more vertical impact than cyclists and swimmers (due to the mechanical impact of every step on your abdominal organs). The soft texture and the fruit base of a fruit performance bar support the eating process. Read more in my blog about clean-label fuel versus gels.
What is in a fruit performance bar from Eagle?
I work from one basic principle: everything inside it has a function. No fillers. No dyes. No artificials. The ingredient list of an Eagle bar is short and readable. That is a trait that is exceptional in the sports nutrition industry.
The carbohydrate sources are fruit, concentrated and dried. That approach naturally provides the right mix of glucose and fructose, supplemented where necessary to guarantee the 2:1 ratio. The result: 80g carbs per 100g, entirely fruit-based. Vegan. Gluten-free. Lactose-free.
I am also developing a BOOST variant of the fruit performance bar. It contains 50mg of caffeine per bar. For the science behind caffeine and sports, see my blog about caffeine sports performance. Contains caffeine. Not recommended for children, pregnant women, or caffeine-sensitive persons.
Some future Eagle variants will contain ingredients that are being studied in clinical trials. Think of rhodiola or ginseng. I am honest about this: scientific research is ongoing, and I am waiting until the findings are definitive before making claims.
How do you use a fruit performance bar during training or competition?
A fruit performance bar is designed for use while moving. That means: during the exertion, not right before or after. The timing follows the basic rule of sports nutrition. Start with carbs within the first 20 minutes of an effort that lasts longer than 60 minutes. Do not wait until you feel you need it. By the time you notice a dip, you are already too late.
Realistic distribution for 60-90g carbs/hour:
- Sports drink (6-8% carbs): 30 to 60g per 500-800 ml bottle = your main source
- 1 to 2 Eagle bars per hour: 20 to 40g carbs = solid component
- Possibly 1 gel in the finale at high intensity
Maximum 1-2 bars per hour. More is not physically realistic. Your stomach cannot digest four bars per hour at pace. Bars are an addition to your drink, not the main source. For a leisurely ride, one bar per hour is sufficient. For a gran fondo or marathon pace, combine drinks, bars, and possibly a gel in the final. See also my practical tips for fuel during your ride.
Why do I choose fruit as a basis?
Fruit is not a marketing choice. It is a functional choice. Dried and concentrated fruit naturally provides a mix of simple sugars that aligns with the 2:1 glucose-fructose ratio. Fruit also contains natural acids and plant compounds that are missing in synthetic sports nutrition. No artificials is not a promise. It is the logical outcome of working with fruit as a base.
My fruit performance bar thus positions itself against two common alternatives: the synthetic gel with maltodextrin and artificial flavors, and the grain-based bar with lactose, gluten, and E-numbers. Fruit as a basis means: no added synthetic ingredients. Vegan by nature. Gluten-free by nature. Without requiring separate certification.
Fruit × effect. That is the core of the category. Not fruit as a flavoring on top of a synthetic base. But fruit as the product itself, supplemented with the science of 2:1 carbohydrate transport to guarantee maximum absorption during exertion. View all Eagle fruit performance bars and their specific formulations.
Not a gel. Not a brick. Fuel during exertion. Fuel your flight.
Scientific foundation
Currell & Jeukendrup, 2008. RCT with trained cyclists. 2:1 glucose-fructose at 90g/hour improved time-trial performance by 8% versus glucose alone. Medicine & Science in Sports & Exercise. doi:10.1249/mss.0b013e31815adf19
Jeukendrup & Moseley, 2010. RCT with 8 trained cyclists. A 2:1 glucose-fructose solution significantly accelerates gastric emptying and fluid uptake versus glucose alone. Scandinavian Journal of Medicine & Science in Sports. doi:10.1111/j.1600-0838.2008.00862.x
Costa et al., 2017. Systematic review on Exercise-Induced Gastrointestinal Syndrome. Stomach issues are about 2x more frequent in runners than in cyclists and swimmers. Blood flow to the intestines drops to 80% during longer or intense exertion. Alimentary Pharmacology and Therapeutics. doi:10.1111/apt.14157
Rowe et al., 2022. RCT with 2:1 glucose-fructose at 90g/hour. 7.6% improvement on a 5km time trial versus standard carbohydrate solution. Medicine & Science in Sports & Exercise. doi:10.1249/MSS.0000000000002764
References
- Currell K, Jeukendrup AE (2008). Superior endurance performance with ingestion of multiple transportable carbohydrates. Medicine & Science in Sports & Exercise 40(2):275-281. doi:10.1249/mss.0b013e31815adf19
- Jeukendrup AE, Moseley L (2010). Multiple transportable carbohydrates enhance gastric emptying and fluid delivery. Scandinavian Journal of Medicine & Science in Sports 20(1):112-121. doi:10.1111/j.1600-0838.2008.00862.x
- Costa RJS, Snipe RMJ, Kitic CM, Gibson PR (2017). Systematic review: exercise-induced gastrointestinal syndrome. Implications for health and intestinal disease. Alimentary Pharmacology and Therapeutics 46(3):246-265. doi:10.1111/apt.14157
- Rowe JT, King RFGJ, King AJ, et al. (2022). Glucose and Fructose Hydrogel Enhances Running Performance, Exogenous Carbohydrate Oxidation, and Gastrointestinal Tolerance. Medicine & Science in Sports & Exercise 54(1):129-140. doi:10.1249/MSS.0000000000002764
Frequently Asked Questions
What is a fruit performance bar and what do you use it for?
A fruit performance bar is functional sports nutrition based on fruit, designed as fuel during exercise. My bar delivers 80g of carbohydrates per 100g in a 2:1 glucose-fructose ratio. This ratio maximizes absorption via two separate transport channels in your gut. No artificials, no unnecessary ingredients. Just clean carbs that perform when it counts.
What is the difference between a fruit performance bar and a regular fruit mix or sports bar?
A regular fruit mix provides fiber and vitamins, but is not optimized for absorption during exercise. A conventional sports bar often contains artificial flavors, sugars, or gluten. My fruit performance bar is specifically formulated for maximum carb absorption during exercise: 2:1 glucose-fructose, 25g per bar, vegan, gluten-free, and lactose-free.
Why is the 2:1 glucose-fructose ratio important during exercise?
Glucose and fructose use different transport channels in your gut. By combining both in a 2:1 ratio, you can process up to 90g of carbs per hour instead of the 60g limit with glucose alone. Currell & Jeukendrup (2008) showed an 8% performance gain with 2:1, and Rowe et al. (2022) confirmed a 7.6% gain. My bar delivers that ratio clean, in a 25g format.
Who uses a fruit performance bar and which sports is it suitable for?
A fruit performance bar is suitable for anyone performing exercise lasting longer than 60 minutes where carb availability determines performance. Cycling, MTB, trail running, marathons, triathlons. Functional and ready-to-use: as fuel during exercise, not as a snack for the couch.
How does a fruit performance bar compare to gels and sports drinks?
Sports drink is your primary source (30-60g carbs per bottle). A fruit performance bar adds 20g of solid carbs per bar. A gel works faster but is more likely to cause stomach issues with cumulative use (Costa et al., 2017). The combination of sports drink + 1 to 2 bars per hour, possibly a gel in the finale, is the strongest fuel strategy for long-duration efforts.
How many bars per hour can I consume during a long ride or run?
A maximum of 1 to 2 bars per hour, always in combination with sports drink. Any more is not physically realistic. Your stomach cannot digest four bars per hour at race pace. For 60g/hour, 1 bottle of sports drink + 1 bar is sufficient. For 90g/hour, combine 1 high-carb bottle with 1-2 bars, optionally supplemented with a gel in the finale.
