Table of contents

Original research

• Injury incidence, severity and profile in Olympic combat sports: a comparative analysis of 7712 athlete exposures from three consecutive Olympic Games (20 November, 2020)

  Reidar P Lystad, Alexander Alevras, Iris Rudy, Torbjørn Soligard, Lars Engebretsen
• Injury rates decreased in men’s professional football: an 18-year prospective cohort study of almost 12 000 injuries sustained during 1.8 million hours of play (5 February, 2021)

  Jan Ekstrand, Armin Spreco, Håkan Bengtsson, Roald Bahr
• Resuming professional football (soccer) during the COVID-19 pandemic in a country with high infection rates: a prospective cohort study (15 February, 2021)

  Yorck Olaf Schumacher, Montassar Tabben, Khalid Hassoun, Asmaa Al Marwani, Ibrahim Al Hussein, Peter Coyle, Ahmed Khellil Abbassi, Hani Taleb Ballan, Abdulaziz Al-Kuwari, Karim Chamari, Roald Bahr
• Physical inactivity is associated with a higher risk for severe COVID-19 outcomes: a study in 48 440 adult patients (13 April, 2021)

  Robert Sallis, Deborah Rohm Young, Sara Y Tartof, James F Sallis, Jeevan Sall, Qiaowu Li, Gary N Smith, Deborah A Cohen