To evaluate the efficacy of early versus delayed introduction of lengthening (ie, eccentric strengthening) exercises in addition to an established rehabilitation programme on return to sport duration for acute hamstring injuries in a randomised controlled superiority trial.

(Vermeulen R, Whiteley R, van der Made AD, van Dyk N, Almusa E, Geertsema C, et al. Early versus delayed lengthening exercises for acute hamstring injury in male athletes: a randomised controlled clinical trial. Br J Sports Med [Internet]. 2022;56(14):792–800. Available from: http://dx.doi.org/10.1136/bjsports-2020-103405)