Table of contents

Original research

• Profiling the tackle and its injury characteristics in premier New Zealand club rugby union players over a complete season (18 January, 2022)

  Sohei Takamori, Michael John Hamlin, Doug King, Patria A Hume, Kosuke Tachikawa, Ryuta Koyanagi, Toru Yoshida
• Paediatric post-concussive symptoms: symptom clusters and clinical phenotypes (10 March, 2022) Free

  Todd W Lyons, Rebekah Mannix, Ken Tang, Keith Owen Yeates, Gurinder Sangha, Emma CM Burns, Darcy Beer, Alexander S Dubrovsky, Isabelle Gagnon, Jocelyn Gravel, Stephen B Freedman, William Craig, Kathy Boutis, Martin H Osmond, Gerard Gioia, Roger Zemek
• Early versus delayed lengthening exercises for acute hamstring injury in male athletes: a randomised controlled clinical trial (25 March, 2022)

  Robin Vermeulen, Rod Whiteley, Anne D van der Made, Nicol van Dyk, Emad Almusa, Celeste Geertsema, Stephen Targett, Abdulaziz Farooq, Roald Bahr, Johannes L Tol, Arnlaug Wangensteen
• Progression through return-to-sport and return-to-academics guidelines for concussion management and recovery in collegiate student athletes: findings from the Ivy League–Big Ten Epidemiology of Concussion Study (20 April, 2022)

  Douglas J Wiebe, Abigail C Bretzin, Bernadette A D'Alonzo
• Effectiveness of the Activate injury prevention exercise programme to prevent injury in schoolboy rugby union

  (6 April, 2022) Free

  Craig Barden, Matthew V Hancock, Keith A Stokes, Simon P Roberts, Carly D McKay
• Association between SARS‐COV‐2 infection and muscle strain injury occurrence in elite male football players: a prospective study of 29 weeks including three teams from the Belgian professional football league (29 April, 2022)

  Evi Wezenbeek, Sander Denolf, Tine Marieke Willems, Dries Pieters, Jan G Bourgois, Renaat M Philippaerts, Bram De Winne, Matthias Wieme, Robbe Van Hecke, Laurence Markey, Joke Schuermans, Erik Witvrouw, Steven Verstockt