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Melinda Marchal

Ultra Volcanique

3rd March, 2024
France
Volvic
2nd, F50-54
Running, Ultra - 77km
5°C
, Cold
10hrs 54mins
more race details

Melinda's headline numbers

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?
?
~74
g
Carb per hour
Recommended 75g/h
~303
ml
Fluid per hour
Recommended 100-500ml/h
~713
mg
Sodium per litre
Recommended 600-1000mg/L
~6.7
mg
Caffeine per kg
Recommended 3-6mg/kg

Melinda'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-loaded
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T - 1-4hrs: Ate a carb rich meal (Low in fat & fibre)
pre-fueled
?
T - 15mins: Took in a final dose of carb
Carb per hour
Recommended 75g/h
~74
g
Melinda's Energy Rating
8
/10
"At around 7.5 hours, I had a lull in energy and I didn't really want to eat. I forced myself to eat something and alternated 2 mins of walking after every 5 mins of running and half an hour later was back to normal. Also, my legs felt heavy in the first hour or two, but I put this down to the ascending up the mountains and my shoes not being done up tightly! "
Our thoughts

Melinda had a solid fueling strategy for this ultra and it is one that she has practiced multiple times in previous races, hitting exactly the same carbohydrate intake per hour at a 50 miler in Snowdon. She stuck to very similar products throughout, and still managed to stave off any flavour fatigue. Apart from the slight lull in energy 7.5 hours into the race, she stuck to her strong fueling strategy and altered her pace experiencing no GI discomfort.

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 100-500ml/h
~303
ml
Sodium per litre
Recommended 600-1000mg/L
~713
mg
Melinda's Hydration Rating
8
/10
"I think it was great considering the cold weather and slow pace, which meant I wasn't sweating that much. I knew I was well hydrated from the day before and I was getting salts in my drink and snacks. I only peed once in nearly 11 hours, though, so perhaps I could have drunk more, but I never felt extremely thirsty."
Our thoughts

With a race like this in cool temperatures, it’s important to drink little and often and listen to your body. Mel has a fairly good estimation of her sweat rate and felt she wasn’t losing a huge amount of fluid. Therefore, even though her intake was on the lower end compared to other ultra running Case Studies we see, she likely replaced the majority of her lower losses similarly to her last race. The fact that she didn’t report any hydration related issues and didn’t feel thirsty throughout supports this assumption, along with the way she appropriately preloaded to start hydrated. For races with warmer temperatures, we’d advise Mel to dial in her sweat sodium losses with a Sweat Test and measure her sweat rate in warmer climates to determine it's upper range.

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
~6.7
mg
Our thoughts

Mel used PF 30 Caffeine Gels immediately before and during the race to reap the ergogenic benefits of caffeine. Although she was slightly over the scientific recommendations for caffeine for someone of her body weight, the duration of this race (>10 hours) explains the practical usage of more caffeine (it’s thought that the current scientific guidelines are more targeted towards ‘shorter’ endurance events). Furthermore, given Mel’s positive subjective feedback and regular caffeine tolerance, we wouldn’t recommend any changes at this point.

How Melinda hit her numbers

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

Melinda's weapons of choice

Final thoughts

Melinda's Satisfaction Rating
8
/10
I would have liked to have been faster, but this early in my training season I knew it wasn't going to be my best event of the year. The icing on the cake would have been to keep my top 10 place; I was overtaken in the last 20 minutes but I just couldn't keep up with her. I only let the gap open up by five minutes, so I'm happy with my 11th place, and really can’t complain.
Melinda
Mel had a strong race in Volvic without reporting any hydration or fueling issues. Despite reaching above the caffeine recommendations, for a race of this duration, and with her high caffeine tolerance this woulldn not be ill advised. Going forward, it’d be helpful for Mel to understand how her sweat rate varies in different conditions so she can adjust her hydration strategy regardless of the climate.
PF&H

Melinda's full stats

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?
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Overall
808g total carb
74g per hour
3,300ml total fluid
303ml per hour
2,354mg total sodium
216mg per hour
713mg
Sodium per litre
378mg total caffeine
6.7mg 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.

Melinda's recent case studies

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