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Caffeinated chewing gum and its benefits
Caffeine is used by many athletes due to its potential as a performance enhancer. There is a substantial amount of scientific evidence to...
Asker Jeukendrup
3 min read


UEFA expert group statement on nutrition
The UEFA expert group statement on nutrition in elite football (1) has now been published. After many months of hard work, a sizeable...
Asker Jeukendrup
4 min read


Race day breakfast considerations
Breakfast or the last meal before competition is important and can have a significant impact on performance.

Caroline Tarnowski
5 min read


Study shows that caffeine increases fat burning, but does it matter?
In new Spanish study appeared in the European Journal of Nutrition about the role of caffeine and fat burning (oxidation).
Asker Jeukendrup
5 min read


What is whey protein?
We hear so much about whey: “The ideal protein for recovery”, “the optimal protein for muscle building”, “the best protein for athletes”....
Asker Jeukendrup
4 min read


Contamination of nutrition supplements
Many supplements are manufactured to very high standards, but a significant percentage that are available for purchase, are not.
Asker Jeukendrup
3 min read


Body composition methods: validity and reliability
How valid and reliable are the different techniques to measure body composition? Which method should you choose?

Caroline Tarnowski
5 min read


How important is energy intake for recovery from injury?
How important is energy intake when injured. What are the pros and cons of decreasing or increasing intake?
Kevin Tipton
5 min read


Risks of supplement use
Supplements may have benefits in certain situations but they also come with risks. What are the risks and how can we mitigate them?
Asker Jeukendrup
4 min read


Nutrition for Jumbo Visma in the Tour
10 reasons why I think the nutrition strategy at JumboVisma is unique and successful.
Asker Jeukendrup
6 min read


Body composition methods compared
How do different methods used to measure body composition compare?

Caroline Tarnowski
5 min read


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


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


Glycemic index useful or useless?
What is the glycemic index? how can it be used? what are the limitations?
Asker Jeukendrup
5 min read


Preventing and treating an iron deficiency
How to prevent or treat iron deficiency. Iron is critical to performance and thus we must make sure we do not develop a deficiency.

Caroline Tarnowski
5 min read


Are my iron levels affecting my performance?
What is iron deficiency? How common is it? whom is at risk and how can you measure it?

Caroline Tarnowski
5 min read


Concerns about truth of labelling of supplements and food products
A nutrition supplement may not always contain what you think it contains. Concerns about nutrition labelling of supplements and the...
Asker Jeukendrup
4 min read


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


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


Do ketone esters spare glycogen and improve performance?
Are ketone esters really such a magical supplement?
Asker Jeukendrup
4 min read
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