There are multiple players who have different types of exercise demands (that is intensities, duration, distance, etc) in soccer. Choose a position from this team sport and think about what each of the athletes do over the course of a game. Next, analyze the energy systems and substrates that may be used by each as they play or compete.

Position assigned: right/left fullback

Additional resources:
https://www.bundesliga.com/en/bundesliga/news/soccer-positions-explained-names-numbers-what-they-do-2579-786
https://yoursoccerhome.com/soccer-positions-a-complete-and-easy-to-understand-guide/

These two articles describing the different positions in soccer. These are basic introductions, and I would suggest we find some more detailed resources (the more scientific the better!). Please analyze the energy systems and substrates that may be used by the right/left fullback soccer player and compare it with the goalkeeper, the striker, and the central midfielder.