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Anna-Marie Watson

Mozart 100

18th June, 2022AustriaSalzburgOther

Anna-Marie's headline numbers

~30g
Carb per hour
Recommended 90g/h+
~648ml
Fluid per hour
Recommended 500-1,000ml/h
~714mg
Sodium per litre
Recommended 1000-1400mg/L
0mg
Total caffeine

Anna-Marie'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

T - 1-4hrs: Ate a carb rich meal (Low in fat & fibre)

Didn't pre-fuel

Anna-Marie would benefit from taking in a final dose of carb <30 minutes before

Carb per hour
Recommended 90g/h+
~30g
Anna-Marie's Energy Rating6/10

"My fueling could have gone better. At 77km I felt sick and couldn’t eat anymore."

Our thoughts

Although Anna-Marie had a carb-rich breakfast as a glycogen top-up on race morning, she could also incorporate a final carb dose in the last 15 minutes, spiking her blood glucose and conserving muscle glycogen for later in the race. Her overall carb intake fell below the recommended range for a race of this duration and intensity, so we’d recommend incorporating structured gut training to increase her intake and deliver more energy to her working muscles. This gut training process would also help address the nausea and difficulty eating she experienced, especially if she practices in higher intensity, key training sessions leading up to races, helping her tolerate a higher carb intake whilst working hard.

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.

Anna-Marie1187mg/L

Anna-Marie has been Sweat Tested to dial in her hydration plan

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 Anna-Marie's losses are High (1,187mg/L), nailing her hydration strategy becomes especially crucial when it's hot and/or humid.

Learn more
Didn't pre-load electrolytes

Drinking a strong electrolyte drink before the race could have helped Anna-Marie start optimally hydrated

Fluid per hour
Recommended 500-1,000ml/h
~648ml
Sodium per litre
Recommended 1000-1400mg/L
~714mg
Anna-Marie's Hydration Rating8/10

"My hydration went well. I probably could have taken some more sodium but I didn’t cramp so that was good."

Our thoughts

Anna-Marie's hydration strategy worked for race day, attenuating any dehydration-related issues that would’ve impacted her performance. However, there are a few tweaks she can make going forward, including preloading to boost her plasma volume and start optimally hydrated. During the race, she alternated between Soft Flasks containing PH 1500 and plain water, which she refilled at each aid station, delivering a higher fluid intake than in the cooler conditions she raced in previously. Her average intake of ~600ml/h was a decent volume over a race of this duration, but it’d be worth doing some sweat rate testing to better tailor her intake in future races. The relative sodium concentration of her drinks was lower than her sweat sodium concentration, so she could benefit by taking on slightly more sodium to replace a greater proportion of her losses. Especially in situations where there are no on-course electrolytes, bringing some Electrolyte Capsules is an easy, convenient way of getting a little extra sodium in. That said, Anna-Marie reported no symptoms of dehydration allowing her to perform and push on in the heat unlike many other competitors who DNF’d.

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.

Didn't pre-load caffeine

Consuming caffeine in the hours before the start may have increased perceived energy levels

Total caffeine
0mg
Our thoughts

Anna-Marie has a low tolerance of caffeine and it can make her feel jittery, so she made the smart choice to cut it out of her race day fueling plan. For those who report negative side effects like Anna-Marie, we don’t recommend forcing yourself to get used to caffeine given the potential drawbacks.

How Anna-Marie hit her numbers

Here's everything that Anna-Marie ate and drank on the day...

Before race (>30 mins)
  • 1 x Bowl of muesli with chocolate milk
  • 1 x Banana
  • 250ml x Plain water
During
  • 4.5L x PH 1500 (Tablets)
  • 7 x PF 30 Chew
  • 5.16L x Plain water
  • 2 x Banana
  • 1 x Peanuts (roasted, salted)
  • 1 x Energy bar (40g carb)
  • 1 x Energy bar (40g carb)
  • 1 x Energy bar (37g carb)
  • 1 x Watermelon Chunks
  • 2 x Orange
  • 2 x Tomato
  • 0.5 x Avocado

Final thoughts

Anna-Marie's Satisfaction Rating6/10

This was a tough ultra. I’m happy to have finished and have lots of new knowledge to take with me on to my future races.

Anna-Marie

Anna-Marie followed a simple and effective fuel and hydration plan to “hang on in there” despite feeling as if she wouldn’t be able to finish in the tough conditions at some points. With her next race coming up soon, we look forward to seeing how she prepares and adjusts her hydration and fueling to more closely meet her needs.

PF&H

Anna-Marie's full stats

Overall
459g total carb30g per hour
10,018ml total fluid648ml per hour
7,156mg total sodium463mg per hour
714mgSodium per litre
0mg total caffeine0.0mg per kg

Data Confidence

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

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There is some confidence in the quantities and brands of products consumed but the data may lack specifics (e.g. volumes specific flavours). A high number of estimations have been made and the room for error is moderate-high. There may also be the possibility that some intake has been grossly over- or under-estimated.

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