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Chris Harris

Swashbuckler 70.3

10th July, 2022
England
Beaulieu
1st
Triathlon, Middle distance - 114.5km
25°C
, Hot
4hrs 20mins
more race details

Chris' headline numbers

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?
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~108
g
Carb per hour
Recommended 90g/h+
~605
ml
Fluid per hour
Recommended 250-750ml/h
~1,290
mg
Sodium per litre
Recommended 1200-1600mg/L
~2.8
mg
Caffeine per kg
Recommended 3-6mg/kg

Chris' 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+
~108
g
Chris' Energy Rating
10
/10
"I had no major dips in energy and felt like I could’ve kept running if I needed to."
Our thoughts

In terms of carb intake throughout the race, Chris averaged an impressive ~108g/h, including his time in the swim. He hit ~110g/h on the bike and an even greater ~120g/h on the run, which is unique to the usual trend of triathletes who frontload a lot of their carbohydrate intake on the bike leg. Compared to the general 90g/h recommendations, Chris averaged a significantly higher carbohydrate intake, supporting the emerging evidence which suggests athletes can absorb and utilise carbohydrates at rates of over 90g/h, usually by combining multiple transportable carbohydrates (e.g. glucose and fructose). Through doing so, Chris would have increased his carbohydrate availability and likely reaped the benefits within his performance. He managed this without any GI discomfort, largely due to a significant amount of time training his gut to tolerate this quantity of carbs.

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.

Chris1433mg/L
Chris has been Sweat Tested to dial in his 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 Chris’s losses are Very High (1,433mg/L), nailing his hydration strategy becomes especially crucial when it’s hot and/or humid.

Learn more
Pre-loaded electrolytes
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 250-750ml/h
~605
ml
Sodium per litre
Recommended 1200-1600mg/L
~1,290
mg
Chris' Hydration Rating
7
/10
"If I had executed my plan perfectly it would have been a ten out of ten, but after dropping one of my bottles on the bike, riding for an hour with nothing to drink was suboptimal. "
Our thoughts

Considering Chris has a sweat sodium concentration of 1,433mg/L, the relative sodium concentration of his drinks on the bike may first appear a little high, but he knew there weren’t many aid stations on the run course to pick up additional fluids and sodium. So, he treated the bike as an opportunity to preload for the run. In future, Chris could consider reducing his sodium intake on the bike and taking some Electrolyte Capsules with him on the run to keep his sodium intake more stable and mitigate the issue of dropping a bottle. During the run, Chris picked up cups of water from the aid stations to drink, and also poured several over his head to keep himself cool as temperatures rose to a soaring ~29℃ (84°F).

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
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Consuming caffeine in the hours before the start may have increased perceived energy levels
Caffeine per kg
Recommended 3-6mg/kg
~2.8
mg
Our thoughts

Despite consuming two PF 30 Caffeine Gels on the run, it’s likely that due to his lower than ideal caffeine intake, Chris may have seen a reduction in his perceived effort in the latter stages of the hilly triathlon course. Next time, taking another caffeine hit earlier in the race to fall within the recommended range will help him reap more of the ergogenic benefits that the stimulant provides.

How Chris hit his numbers

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

Chris' weapons of choice

Final thoughts

Chris' Satisfaction Rating
9
/10
My first overall 70.3 win on a hilly course in scorching temperatures, I'm pretty stoked!
Chris
Chris raced hard from the gun, leading out of the swim and never looking back as he battled solo for the remaining ~4 hours of racing. He averaged his highest carbohydrate intake yet during a race, and rated his GI comfort a 10 out of 10 whilst doing so. Racing well in the heat is something Chris has consistently worried about as a result of his high sweat sodium concentration and sweat rate, but having an appropriate and calculated hydration and fueling plan has enabled him to reap the rewards of his training, regardless of the weather conditions.
PF&H

Chris' full stats

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Overall
466g total carb
108g per hour
2,620ml total fluid
605ml per hour
3,379mg total sodium
780mg per hour
1,290mg
Sodium per litre
200mg total caffeine
2.8mg per kg
Bike and Run
Bike
Run

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.
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2
3
4
5

There is good confidence in the accuracy of the data reported. An athlete feels that the numbers closely reflect what they consumed despite a couple of estimations which may carry some degree of error. The majority of what was consumed is recorded to a high level of specificity (most volumes are known through the use of bottles brands quantities flavours). The numbers are very plausible and align with previous data recordings (if an athlete has collected data previously).

Chris' recent case studies

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