
Amelia Mitchell
British Gravel Championships
Amelia's headline numbers
Amelia's strategy
Fueling
Carbohydrate is the main fuel you burn when racing. Failing to fuel properly is a leading cause of underperformance in longer races.
Amelia’s carb-rich breakfast and snacking on sweets on the drive to Scotland would have helped stock her glycogen stores and prepare for the big effort she managed on race day. In training, she has been working hard to practise tolerating higher volumes of carb whilst riding at a high intensity. Her gut training definitely paid off at the champs as she comfortably consumed over her target of ~100g/h! Since she had some of her carb in her bottles, Amelia’s conscious effort to stay hydrated actually helped her fuel more consistently, a win-win situation for her energy levels and hydration status.
Hydration
Taking on board an appropriate amount of fluid and sodium is essential to maintaining blood volume and supporting the cardiovascular effort needed to perform on race day.
Whilst the absolute amount of sodium and fluid consumed per hour is important, it’s critical to consider these in relation to each other. This is known as 'relative sodium concentration' and it’s expressed in milligrams per litre (mg/L). How much sodium you’re taking in per litre of fluid is more important than the absolute amount taken in per hour.
Sweat sodium concentration (mg/L) is largely genetically determined and remains relatively stable. Knowing how salty your sweat is enables you to replace a good proportion of your sweat losses, which can range from 200-2,000mg/L.
Given Amelia’s losses are Very High (1,617mg/L), nailing her hydration strategy remains important, even when it’s Mild.
Learn moreAfter a history of struggling with cramp, incorporating electrolytes into her strategy has been a gamechanger for Amelia. Her Sweat Test revealed she’s a very salty sweater, so adequately replacing the fluid and sodium losses during a race is critical to support her performance. While she didn’t have any dehydration-related symptoms this time, the weather was fairly mild so her total losses wouldn’t have accumulated too much. Considering her high sweat sodium concentration, it’d be beneficial to incorporate a bit more sodium into her bottles, using more PH 1500 (Tablets) to better match her losses. Since she noticed a bit of thirst, the increase in sodium may help quench this, but it could also be helpful to undertake some sweat rate testing to make sure she’s consuming enough fluid for how much she’s losing in certain weather conditions.
Caffeine
Beyond the Three Levers of Performance (carb, sodium and fluid), caffeine is one of only a few substances that is proven to improve performance for most endurance athletes as it can help stave off mental and physical fatigue.
Since Amelia had a PF 30 Caffeine Gel in the last 20 minutes before the start, she likely would have reaped some of the benefits of the stimulant about half an hour into the race. However, her intake fell below the recommended dosage for the ‘full effect’ to improve performance, so as long as she continues to tolerate caffeine well, she could swap one of her gels during the race to a caffeinated one.
How Amelia hit her numbers
Here's everything that Amelia ate and drank on the day...
Amelia's weapons of choice
Final thoughts
Amelia's full stats
Data Confidence?
There is an adequate level of accuracy in the data collected and the numbers reported. The athlete manages to recall what they ate and drank including most specifics (brands flavours quantities plausible estimations of volumes). However there are estimations made within the data which affect the overall confidence level in the data reported.