1. Why the Chosen Ones May Not Always Be the Best Leaders: Criteria for Captain Selection as Predictors of Leadership Quality and Acceptance. Butalia R(1), Fransen K(1), Coffee P(2), Laenens J(1), Boen F(1). Author information: (1) Department of Movement Sciences, KU Leuven, Leuven, Belgium. (2) Faculty of...

THEORETICAL FRAMEWORK Physical performance testing is crucial to create and design more effective and tailored training programs. In addition, profiling athletes’ physical characteristics is important to understand the discrepancies in physical performance with aging, furthering the ability of soccer clubs to make informed and rational investments....

1. SARS-CoV-2 transmission during rugby league matches: do players become infected after participating with SARS-CoV-2 positive players? Ben Jones, Gemma Phillips, Simon Kemp, Brendan Payne, Brian Hart, Matthew Cross, Keith A Stokes. Carnegie Applied Rugby Research (CARR) centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK...

1. Vertical Force-velocity Profiling and Relationship to Sprinting in Elite Female Soccer Players. Manson SA, Low C, Legg H, Patterson SD, Meylan C. Department for Physical Performance, Canadian Soccer Association, Ottawa, Canada. 39 international female soccer players performed 40-m sprints, maximal countermovement jumps and loaded squat jumps at...

Franco Impellizzeri is a Professor at the Technological University of Sydney. Australia. He is a world-class researcher, with a scientific activity characterized by >150 JCR articles. He is currently Associate Editor of the prestigious Journal of Sports Physiology and Performance and Chief Editor of Science...

1. Effects of Different Recovery Times on Internal and External Load During Small-Sided Games in Soccer.  Branquinho L, Ferraz R, Travassos B, Marinho DA, Marques MC.  Department of Sports Sciences, University of Beira Interior, Covilhã, Portugal. To identify the effects of different recovery times on internal and external...

Aaron Coutts is a Professor at University of Technology in Sydney, Australia. He is a word-class researcher in Sports Sciences. He is currently director of the Department of Sports Science at the Carlton Football Club (Australia). His professional and research activity focuses especially in control...

1. Effects of Caffeine Supplementation on Physical Performance of Soccer Players: Systematic Review and Meta-Analysis. Ferreira RES, Pacheco RL, de Oliveira Cruz Latorraca C, Riera R, Eid RG, Martimbianco ALC.  Centro Universitário São Camilo, São Paulo, SP, Brazil. This systematic review with meta-analysis of 16 Randomized clinical trials...

¡THEORETICAL FRAMEWORK Soccer is a team sport characterized by prolonged high-intensity intermittent efforts (Mohr et al., 2003). During match-play, players perform approximately 200 actions at high-intensity (Mohr et al., 2003). Besides running and sprinting, players perform numerous high physically demanding activities such as directional changes, dribbling,...