This one is part of the Methods Matter series that we co-host in the British Journal of Sports Medicine. In randomised controlled trials (RCTs) of interventions that aim to prevent sports injuries, the intention-to-treat principle is a recommended analysis method and one emphasised in the Consolidated Standards of Reporting Trials (CONSORT) statement that guides quality reporting of such trials. However, an important element of injury prevention trials-compliance with the intervention-is not always well-reported. Therefore, to highlight the importance of reporting compliance, in this study we carefully evaluated eight of the author’s previous trials with the purpose to describe the compliance during follow-up and address compliance issues that surfaced. Based on these observations, we discussed how results from ITT analyses can be interpreted according to the observed compliance.

We already shared this viewpoint in Social Media before, but it got no attention here so far. In this current viewpoint, we argue that those involved with Sports Science and Medicine should lead the discussion and reflect on the health effects of eSports participation, providing scientifically-based arguments to better answer to the current eSports professionalism.

In the final rush of 2019 some of our studies made it to publication. This particular study - an observational prospective cohort study - explored the association between concussion or musculoskeletal injuries, and the onset of mental health symptoms (MHS) in male professional rugby players over a 12-month period.