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Kate Avery

Ultra Trail Australia

18th May, 2024
Australia
Blue Mountains
1st, F30-34
Running, Ultra - 50km
13°C
, Mild
4hrs 46mins
more race details

Kate's headline numbers

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?
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~94
g
Carb per hour
Recommended 90g/h+
~314
ml
Fluid per hour
Recommended 250-750ml/h
~667
mg
Sodium per litre
Recommended 800-1200mg/L
~1.7
mg
Caffeine per kg
Recommended 3-6mg/kg

Kate'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.

Carb-rich meal
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T - 1-4hrs: Ate a carb rich meal (Low in fat & fibre)
pre-fueled
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T - 15mins: Took in a final dose of carb
Carb per hour
Recommended 90g/h+
~94
g
Kate's Energy Rating
7
/10
"My energy levels started off great and I only had a small dip around the 3 hour mark, but managed to finish strong in the last hour. I felt I might have eaten a bit closer to the race start than I would like, but I really tried to prioritise sleep."
Our thoughts

With races starting early in the morning, it can be challenging to consume food prior without sacrificing sleep and having enough time for food to digest before the race starts. After carb-loading in the days leading up to the event, completing this with a carb-rich dinner the night before, Kate managed to get down a couple of slices of toast to further top up her glycogen stores. Kate managed her energy levels well by consistently consuming carbohydrates throughout the race. Her fueling strategy was simple, using PF 90 Gels as her primary source of carbs and supplementing this with PF Carb and Electrolyte Drink Mix.

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.

Pre-loaded electrolytes
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 250-750ml/h
~314
ml
Sodium per litre
Recommended 800-1200mg/L
~667
mg
Kate's Hydration Rating
6
/10
"Fortunately, the temperature wasn’t too warm, and I didn’t experience any cramping during or after the race but I definitely think my hydration strategy could be better."
Our thoughts

Despite feeling as though she could have drank more throughout the race, the manageable conditions helped Kate avoid any dehydration-related symptoms. Her fluid intake was on the lower end of the recommended range for a race of this distance and could be increased in the future, particularly during warmer temperatures. It would also be helpful for Kate to carry some Electrolyte Capsules to supplement the plain water she picks up at aid stations, and avoid over-diluting the average sodium concentration of her drinks. Without knowing her exact sweat sodium concentration, increasing the ‘saltiness’ of her drinks can sometimes help increase the thirst response which may have helped Kate drink a little more. Getting Sweat Tested would be the next step for Kate to optimise and have confidence in her hydration strategy.

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.

Pre-caffeinated
?
T - 0-4hrs: Had a final hit of caffeine
Caffeine per kg
Recommended 3-6mg/kg
~1.7
mg
Our thoughts

Despite only averaging ~1.7mg/kg of caffeine during the race itself, Kate consumed 400mg of caffeine (~6.8mg/kg) on the morning of the race through caffeine pills. It’s almost certain that this would have been in her system during the race and helped her reap the ergogenic benefits of the stimulant, lowering her levels of perceived exertion and keeping fatigue at bay. Front-loading caffeine so that it peaks before the race is a strategy that works for some athletes depending on their personal tolerance and the race duration. Kate should continue to monitor this in both training and races to ensure she is getting the most out of the stimulant, as she did experience a dip in energy towards the latter part of the race. It might be beneficial to spread out her caffeine intake, or add a top-up later in the race to keep her blood caffeine levels high throughout the race.

How Kate hit her numbers

Here's everything that Kate ate and drank on the day...

Kate's weapons of choice

Final thoughts

Kate's Satisfaction Rating
8
/10
I am super happy with how I finished the race but I think the middle section could be stronger. My recovery from the race has been better than expected and I haven’t felt too sore or had any DOMS which I usually do. My first 50k was in February 2023 so I am still learning and I am keen to find ways I can improve my fuelling and hydration to do better.
Kate
Kate put on an incredible performance to land her at the top of the podium. After only recently transitioning to ultra-running, Kate still has the potential to maximise her performance by fine-tuning her fuel and hydration strategy. Understanding her sweat sodium losses and designing a hydration strategy to more closely match them, and adjusting her caffeine intake would be both helpful adjustments going forward.
PF&H

Kate's full stats

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Overall
450g total carb
94g per hour
1,500ml total fluid
314ml per hour
1,000mg total sodium
209mg per hour
667mg
Sodium per litre
100mg total caffeine
1.7mg per kg

Data Confidence
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We rate each of our case studies from 1-5 based on the level of accuracy, and our confidence in the data.
1
2
3
4
5

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.

Kate's recent case studies

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