He was a Sports Science intern with Chelsea FC.[3][4] During a year at the football club he worked under Scolari, Hiddink and Ancelotti.[5]
Hockey
Petrakos was the Lead Strength and Conditioning Coach for the Ireland national women's hockey team.[3]
Academic career
Petrakos graduated from the University of Loughborough with a BSc in Sports Science.[3][4]
He then studied at the University of Edinburgh and gained a Masters in Strength and Conditioning.[3][4]
In Ireland he became the Lead Strength and Conditioning Coach for University College Dublin and lectured in the subject from 2012 - 16.[3]
He became a researcher in force application at the Dublin University and used resisted sled sprint training to profile sprinting performance from 2015 - 16.[3] He has published research on using very heavy sled training for improving horizontal force output.[2]
