Footnotes

• Twitter @vincenzo_ra

• Collaborators António Rebelo; Peter Krustrup; Magni Mohr, João Brito; Pedro Figueiredo; Daniel Barreira; Rafael Martín-Acero.

• Contributors The PhD was conducted in the Centre of Research and Education, Innovation and Intervention in Sports, Faculty of Sports, University of Porto and in the Department of Sports Science and Clinical Biomechanics, Sport and Health Sciences Cluster, University of Southern Denmark. Additional support was provided by the Portuguese Football School, Portuguese Football Federation. The PhD was supervised by António Rebelo, Peter Krustrup and Daniel Barreira. Co-authors include Magni Mohr, João Brito, Pedro Figueiredo and Rafael Martín-Acero.

• Competing interests None declared.

• Provenance and peer review Not commissioned; internally peer reviewed.