Hi! In this link, from the FM official website, you can find a study demonstrating the big impact of playing in altitude. It is in Spanish, but with translation is very understandable:
https://www.footballmanager.com/es/the-byline/domina-en-la-altura-guia-de-altitud-en-football-manager
I also remember a famous twitter thread about an experiment of a Nepali football team playing in the Premier League and everytime teams from England visited this team they couldn't win due the a huge impact of altitude in players. Couldn't find the link right now.
Hi! In this link, from the FM official website, you can find a study demonstrating the big impact of playing in altitude. It is in Spanish, but with translation is very understandable: https://www.footballmanager.com/es/the-byline/domina-en-la-altura-guia-de-altitud-en-football-manager I also remember a famous twitter thread about an experiment of a Nepali football team playing in the Premier League and everytime teams from England visited this team they couldn't win due the a huge impact of altitude in players. Couldn't find the link right now.