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Asker Jeukendrup

4 min

Oral contraceptives and performance

The effect of contraceptive pills are used by female athletes may affect performance. Here the evidence is presented.

937 views

Asker Jeukendrup

4 min

Effects of menstrual cycle on performance

What are the effects of menstrual cycle on performance and how should athletes prepare for competition?

1,544 views

Asker Jeukendrup

5 min

Glycemic index useful or useless?

What is the glycemic index? how can it be used? what are the limitations?

3,089 views

Caroline Tarnowski

5 min

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.

2,055 views

Asker Jeukendrup

5 min

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?

1,732 views

Asker Jeukendrup

4 min

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 quali...

1,211 views

Asker Jeukendrup

3 min

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.

5,836 views

Asker Jeukendrup

4 min

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...

3,165 views

Asker Jeukendrup

4 min

Do ketone esters spare glycogen and improve performance?

Are ketone esters really such a magical supplement?

2,829 views

Asker Jeukendrup

3 min

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

1,685 views

Asker Jeukendrup

5 min

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 off...

3,542 views

Asker Jeukendrup

5 min

Myth busting: the alkaline diet

An alkaline diet, alkaline water, alkalising supplements are often promoted in the lay press as “healthy”. But what is the evidence?

2,959 views

Shona L Halson & Suzanna Russell

4 min

Mental fatigue in sport- what is it and how do we recover from it?

Can mental fatigue affect physical performance? and if so is there something e can do about this?

3,454 views

Shona Halson

2 min

Enhancing sleep through nutrition

Sleep is vital for physiological and psychological functions that may be particularly important to athletes. Nutrition can influence sleep q

4,902 views

Asker Jeukendrup

20 min

Is game changers game changing or is it sensationalism?

An analysis of the movie game changers. It it real science?

39,259 views

Javier T. Gonzalez

4 min

The sweet taste of success: Fructose for recovery in multi-stage races

Resynthesis of liver and muscle glycogen respond differently to different types of carbohydrate. This may have implications for performance.

4,834 views

Asker Jeukendrup

3 min

Is coconut water as "natural" as suggested?

Is coconut water as "natural" and effective as suggested?

3,542 views

Kevin Tipton

4 min

The truth about BCAA

BCAAs are a popular supplement with a lot of claims but a closer look reveals that evidence isn't actually strong.

25,959 views

Asker Jeukendrup

3 min

Why is performance in the heat decreased?

It is generally accepted that aerobic exercise capacity in hot conditions. But why does performance decrease?

6,064 views

Asker Jeukendrup

5 min

Ketogenic diets for athletes

Claims that ketogenic diets improve performance are not based on evidence. There may be adaptations that are interesting and there may be th

18,949 views

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30 YEARS OF EXPERIENCE IN SPORTS NUTRITION AS A RESEARCHER, EDUCATOR, PRACTITIONER, CONSULTANT AND ATHLETE