Choosing the right drink for your sport

Karoline Bjerkeli Grøvdal

Isotonic Sports Drinks What do they do? When should I drink them?
4-7g Carbohydrates per 100ml They are designed to effectively replace the fluids and minerals that are lost by sweating. They also provide a boost of carbohydrates (fuel). Isotonic drinks such as Powerade ION4 are the most common drinks for athletes.
Isotonic drinks are ideal for rehydrating and fuelling. They’re best suited for those competing in team sports and endurance events, and those exercising for 30 minutes or longer at a high intensity, or for 60 minutes or longer at any intensity.

Hypertonic Sports Drinks What do they do? When should I drink them?
>8g Carbohydrates per 100ml Drinks such as sugar- containing carbonated drinks, fruit juices or energy drinks are classified as "hypertonic". They are useful when carbohydrates needs are high and sweat rates are lower.
They contain even higher levels of carbohydrates than isotonic drinks and they generally don’t contain minerals. Hypertonic drinks such as Powerade Energy should therefore not be used to maintain hydration. It is advisable only to use them together with isotonic or hypotonic drinks for that purpose.

Although not technically classed as sports drinks, it may also be useful to mention the Zero-Sugar category. 

Zero-Sugar Fitness Drinks What do they do? When to use them?
Zero Sugar Fitness drinks contain sodium to help prevent dehydration. They are lightly flavoured which encourages you to drink and avoid dehydration. Recommended for lighter training or low/moderate intensity exercise lasting less than 60 minutes.
Zero Carbohydrate Designed for when fuel replenishment isn’t essential and extra calories through drinking are unwanted during a light fitness session. Ideal for individuals who are calorie conscious and exercise with the objective of weight maintenance or reduction.