When Something Is at Stake: Differences in Soccer Performance in 11 vs. 11 During Official Matches and Training Games.

"The authors thank the players and staff of the 3 youth academies for participating and cooperating in this project and students for their contribution during the data acquisition. There was no potential conflict of interest to report by the authors. In particular, the authors state that they have no professional relationships with companies that could benefit from the results of this study and that the results do not constitute endorsement of any products by the authors or the National Strength and Conditioning Association. The authors state that no funding was received for this work."

"The authors thank the players and staff of the 3 youth academies for participating and cooperating in this project and students for their contribution during the data acquisition. There was no potential conflict of interest to report by the authors. In particular, the authors state that they have no professional relationships with companies that could benefit from the results of this study and that the results do not constitute endorsement of any products by the authors or the National Strength and Conditioning Association. The authors state that no funding was received for this work."