This theme issue celebrates the collaboration between BJSM and the Swedish Society of Exercise and Sports Medicine (SFAIM). From this issue onwards, SFAIM members will gain full access to BJSM through a link on our website (http://www.svenskidrottsmedicin.se); SFAIM will also reach out to a wide audience using the BJSM blog and podcasts. As the chairman of SFAIM, I am proud to be guest editing this issue, together with Richard Frobell, where we present some of the ongoing work of Swedish Exercise and Sports Medicine.