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John Borstelmann

John Borstelmann

Steamboat Gravel

15th August, 2021USAColorado17th, MPRO

John's headline numbers

~53g
Carb per hour
Recommended 90g/h+
~915ml
Fluid per hour
Recommended 500-1,000ml/h
~970mg
Sodium per litre
Recommended 1100-1500mg/L
~4.3mg
Caffeine per kg
Recommended 3-6mg/kg

John'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

John would benefit from taking in a final dose of carb <30 minutes before

Carb per hour
Recommended 90g/h+
~53g
John's Energy Rating6/10

"I think I did the best I could considering the bottle of carbs I dropped. "

Our thoughts

We recommend to all of our athletes to consider having a gel, banana or similar small dose of carbs just before a race. John chose not to do this in this instance, and could look to implement this into his strategy moving forward to ensure that his glycogen stores are fully topped up. The majority of his carb intake came from a selection of energy gels and chews, as well as a substantial quantity of cola, but still totalled well below the scientific recommendations for a race of this duration and intensity. Unfortunately, John did drop his bottle containing PF Carb & Electrolyte Drink Mix which certainly would have impacted his fueling strategy. We’d recommend John try to increase his intake towards the 90g/h recommendations by carrying some additional gels in case he loses part of his fuel strategy again!.

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.

John1310mg/L

John 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 John's losses are High (1,310mg/L), nailing his hydration strategy becomes especially crucial when it's hot and/or humid.

Learn more
Pre-loaded electrolytes

T - 60mins: Drank ~500ml of strong electrolyte drink

Fluid per hour
Recommended 500-1,000ml/h
~915ml
Sodium per litre
Recommended 1100-1500mg/L
~970mg
John's Hydration Rating8/10

"I felt well hydrated throughout the race. "

Our thoughts

Considering John’s above average sweat sodium concentration, his electrolyte intake was a bit low. However, his high fluid intake helped mitigate any dehydration-related symptoms and thankfully he didn’t experience any cramping. He used PH 1000 tablets and sachets during the race to hit the average sodium concentration we see in athletes, and he did well to continually add PH 1000 each time he re-filled his bottles at the aid stations. John’s hydration strategy was slightly impacted by the loss of his bottle which contained PF Carb & Electrolyte Drink Mix about 35 miles in, as he hadn’t consumed *any* of it. Despite this, he was still able to refill his other bottle ~4.5 times to hit an impressive volume of fluid per hour. For future races, John could swap some of his PH 1000 for PH 1500 - or take some Electrolyte Capsules with him - as this will help him match his losses more closely and ensure he stays appropriately hydrated.

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
~4.3mg
Our thoughts

John was well within the scientific recommendations for caffeine intake, using caffeinated energy gels and cola to provide an extra boost and sustain his energy levels right until the end of the race.

How John hit his numbers

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

Before race (>30 mins)
  • 500ml x PH 1500 (Tablets)
  • 1 x Bowl of granola, nuts, muesli, berries with dairy free milk
  • 1 x Black coffee
During
  • 3.5L x PH 1000 (Tablets)
  • 2L x PH 1000 (Drink Mix)
  • 3 x Energy gel (22g carb, 75mg caffeine)
  • 1 x Energy gel (22g carb, 300mg sodium)
  • 0.5 x Energy chew (48g carb, 100mg caffeine)
  • 1 x Energy chew (48g carb, 200mg sodium)
  • 600ml x Cola
  • 1 x Energy bar (33g carb)
  • 1 x Watermelon
  • 1 x Lemon sweet (4g carb)

Final thoughts

John's Satisfaction Rating7/10

A solid race that sets me up well for Gravel Worlds next week!

John

Considering the unlucky circumstances of a crash, a mechanical issue and dropping a bottle, John still managed to hydrate well, placing 17th overall. Ahead of his next race, we’d advise increasing his carb intake toward the 90g/h recommendation to optimise both performance and recovery, as well as increase his sodium intake to better match his personal losses.

PF&H

John's full stats

Overall
355g total carb53g per hour
6,100ml total fluid915ml per hour
5,915mg total sodium887mg per hour
970mgSodium per litre
323mg total caffeine4.3mg 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.

12345

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.

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