Science In Sport GO Isotonic Energy Gel 60ml - Single Unit (Lemon & Lime)

## Who It's For The GO Isotonic Energy Gel is tailored for endurance athletes such as marathon runners, cyclists, and triathletes who require a quick energy boost without the need for additional water. Its isotonic formulation makes it particularly suitable for athletes who prefer a simple, fast-absorbing carbohydrate source during high-intensity efforts. This product is also beneficial for athletes participating in events where carrying extra fluids is impractical, such as trail runners or cyclists during long rides.

## Inside the Formulation This energy gel is formulated with maltodextrin, a glucose-based carbohydrate that is rapidly absorbed by the body. The isotonic nature of the gel means it matches the osmolality of body fluids, allowing for quick gastric emptying and absorption without the need for additional water. Despite its convenience, the gel's single-source carbohydrate limits the efficiency of energy delivery compared to multi-source gels, which can utilize both SGLT1 and GLUT5 transporters for higher absorption rates. The gel also contains 10mg of sodium, which is significantly lower than the 300-600mg/hr typically lost in sweat, necessitating additional electrolyte supplementation.

## On Course: How to Use It For a 5k race, this gel may not be necessary due to the short duration. However, if used, consume one gel 15 minutes before the start for a quick energy boost. In a 10k, consume one gel 10-15 minutes before the start to ensure glycogen stores are topped up. For a half marathon, take one gel 10 minutes before the start and another at the halfway point (around 10-11 km). During a marathon, consume one gel 10 minutes before the race, then take one every 45 minutes. This aligns with a strategy of approximately 30g of carbs per hour, helping to sustain energy stores throughout the marathon.

## How It Compares Compared to other energy gels, the GO Isotonic Energy Gel offers the advantage of not requiring additional water, making it convenient for athletes who prefer minimal hydration strategies. However, its single-source carbohydrate limits its effectiveness for those seeking to maximize carbohydrate absorption. The low sodium content is a drawback for longer events, necessitating additional electrolyte supplementation. Despite these limitations, the gel's isotonic nature makes it a reliable option for mid-race energy boosts.

## Training Your Gut To optimize performance and avoid gastrointestinal distress, athletes should train their gut to tolerate the gel. In week 1, start with one gel during a 45-minute run, twice a week, to assess tolerance. In week 2, increase to one gel every 30 minutes during a 60-minute session, twice a week. In week 3, simulate race pace by consuming one gel every 20 minutes during a 90-minute run. In week 4, rehearse the full race strategy with gels every 45 minutes during a 2-hour session. Key tips include testing gels in training to avoid race day surprises, pairing with water-only hydration to prevent over-sweetness, monitoring for GI distress, and practicing opening and consuming gels on the move.

## The Verdict The GO Isotonic Energy Gel is a solid choice for athletes needing quick energy without extra water. However, its single-source carbohydrate limits its effectiveness for those seeking to maximize carbohydrate absorption. The low sodium content is a drawback for longer events, necessitating additional electrolyte supplementation. Despite these limitations, the gel's isotonic nature makes it a reliable option for mid-race energy boosts. Athletes should consider their specific needs and race conditions when integrating this gel into their fuelling strategy.