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The optimal ratio of carbohydrates
In 2003, we discovered that certain combinations of carbohydrate could be absorbed faster in a sports setting. Before this discovery it...
Asker Jeukendrup
4 min read
30,677 views


Is CGM a fuel gauge?
Wouldn’t it be great to have a tool that measures how much fuel is left in your tank, just like a car has a fuel gauge? This would allow...
Asker Jeukendrup and Mike Riddell
5 min read
5,602 views

Sodium bicarbonate, cheap and effective?
Sodium bicarbonate is a household product commonly known as baking soda that many may be familiar with. What some may not know is that...
Bryan Saunders
4 min read
15,034 views


How to fuel for a marathon
Marathon runners are starting to pay more and more attention to their nutrition. No one ever questions the importance of training, yet...
Asker Jeukendrup
13 min read
32,453 views

Will women outperform men in ultra-endurance events?
An interesting review (1) was published recently re-igniting the discussion whether women will ever outperform men in ultra-endurance...
Ollie Odell
5 min read
13,254 views

Preventing and managing gut issues
It is now well accepted that gut complaints during and after exercise are a common issues amongst athletes (Read more here). The primary...
Ricardo Costa
5 min read
7,481 views

What causes gut issues during and after exercise?
Many competitions take place in hot and challenging conditions. The Tokyo Olympic Games are only an example. The expected hot conditions...
Ricardo Costa
4 min read
7,069 views


Smaller runners benefit more from nutrition during a marathon
In a previous blog we discussed what it takes to run a sub 2h marathon. Nutrition is an important factor, and in particular race...
Asker Jeukendrup
3 min read
6,347 views


What it takes to run a sub 2 marathon
This week a unique paper was published in the Journal of Applied Physiology. Professor Andrew Jones and his team (1) reported on the...
Asker Jeukendrup
3 min read
9,674 views

Oral contraceptives and performance
The effect of contraceptive pills are used by female athletes may affect performance. Here the evidence is presented.
Asker Jeukendrup
4 min read
5,724 views


Effects of menstrual cycle on performance
What are the effects of menstrual cycle on performance and how should athletes prepare for competition?
Asker Jeukendrup
4 min read
21,461 views


120 grams of carbohydrate per hour in mountain marathon runners
A new paper was published that suggests intakes of 120 g/h in mountain marathon runners.
Asker Jeukendrup
3 min read
21,760 views


The case for high carbohydrate intake during long races
Runners find it hard to ingest carbohydrate during running, perhaps because they are not used to it. Studies show they could benefit from...
Asker Jeukendrup
4 min read
14,663 views

What is better? Frequent sips or larger amounts of drinks during running?
Carbohydrate intake during exercise can enhance endurance exercise performance. but should it be frequent sips or less regular larger amount
Asker Jeukendrup
3 min read
9,153 views


Zwift and my nutrition plan
The corona virus has changed the way many people exercise. Many cyclists and runners have resorted to Zwift for their training. Zwift...
Asker Jeukendrup
5 min read
7,953 views

A nifty tool to plan your nutrition
I have been helping athletes to create nutrition plans for their races for a long time. For 25 years, I have worked with, listened to and...
Asker Jeukendrup
6 min read
12,186 views

Energy bars, gels or drinks?
Athletes use, drinks, gels, bars, fruits and other forms of carbohydrate. But what is the best way to take carbohydrate?
Asker Jeukendrup
3 min read
23,652 views

Why is performance in the heat decreased?
It is generally accepted that aerobic exercise capacity in hot conditions. But why does performance decrease?
Asker Jeukendrup
3 min read
12,227 views

Training the gut for athletes
I remember that many years ago a review paper was published with the title: Is the gut an athletic organ? It hinted to the fact that...
Asker Jeukendrup
3 min read
26,469 views


Nutrition for a half distance triathlon
For a half distance triathlon (70.3) or other 4 to 7 hour event, nutrition can be an incredibly important factor.
Asker Jeukendrup
5 min read
6,643 views
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