Hattie Harnden
Enduro MTB British Championships
Hattie's headline numbers
Hattie'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.
For this multi-stage race, Hattie rode for four and a half hours, with five timed technical downhill sections throughout. She focused on fueling the day before with high-carb foods like rice, pasta and some sports nutrition products. Then, during race day she took small, frequent doses of carb to top up her circulating glucose levels. Since Hattie’s intake fell below the general recommendations of ~60-75g per hour for a race of this duration and intensity, she has room to improve this part of her strategy. The logistics of this race, including frequent technical sections and some stop-start points, necessitated easily digested carbs like sports nutrition products, so Hattie could increase her intake by incorporating more of these. She could also consider taking a PF 30 Gel or Chew immediately before the gun goes off to boost her energy levels, helping to kickstart her fueling strategy and prevent the slow start she experienced.
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.
Whilst Hattie’s losses are on the moderate side, getting her hydration strategy right is still important if she wants to perform at her best.
Learn moreHattie isn’t a very heavy sweater and has only moderate sodium losses, so whilst it was humid on race day in Scotland, she didn’t feel like her sweat losses were excessive. She managed to drink frequently and refill her bottles twice during small breaks, using PH 1000 (Drink Mix) and some PF Carb Only Drink Mix to maximise ‘bang-for-buck’ in her bottles. This likely replaced a large enough proportion of her sweat and electrolyte losses and helped her avoid any effects of dehydration.
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.
Hattie missed her pre-race coffee so decided to take some caffeine gum shortly before the race began to have the stimulant circulating in her blood. Along with a mid-race top up using a PF 30 Caffeine Gel, she achieved the minimum effective dose to obtain performance benefits including increased focus, giving her the edge on the technical timed sections by minimising mistakes whilst at high speeds.
How Hattie hit her numbers
Here's everything that Hattie ate and drank on the day...
Hattie's weapons of choice
Final thoughts
Hattie'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.