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General Medicine & Health Science Fair Project

Isotonic Drinks and Runners

Isotonic Drinks and Runners | Science Fair Projects | STEM Projects
Do you want to know if isotonic drinks can help long-distance runners improve their performance? This science project will have you running a 5 km cross country route with 30 athletes, giving some of them isotonic drinks and some of them water. The results will show if the isotonic drinks help the runners improve their performance.


The hypothesis is that long distance runners will improve their performance by drinking isotonic drinks during runs.

Method & Materials

You will have 30 long-distance runners between ages 16 to 20 run a 5 km cross country route. You will place a watering station midway along the route to supply the runners with isotonic drinks and water. You will record the time taken by each of the athletes to complete the 5 km run.
You will need a 5 km cross country path, a stopwatch, 15 bottles of Gatorade, 45 bottles of water, 15 blue T-shirts, and 15 red T-shirts.


The results showed that the runners in the first group wearing the red T-shirts were able to improve their time in the second race after drinking the isotonic drink (i.e.Gatorade). The runners in the 2nd group did not show much improvement in their average running time.

Why do this project?

This science project is interesting because it shows how something as simple as drinking an isotonic drink can help improve performance.

Also Consider

Experiment variations to consider include repeating the experiment with other sports like swimming, cycling and triathlons, and repeating the experiment using different brands of isotonic drinks (eg. Gatorate vs 100 Plus).

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related videos

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