van Dyk et al. 2019, Nordic hamstring exercise and hamstring-injury prevention

Systematic review and meta-analysis (BJSM 2019;53(21):1362-1370) of 8,459 athletes across 15 studies, testing injury-prevention programmes that include the Nordic hamstring exercise. Including the exercise roughly halved the rate of hamstring injuries, with an overall injury risk ratio of 0.49 (95% CI 0.32 to 0.74); the effect held in RCT-only analysis (RR ~0.52). Strong (Level 1 meta-analysis of RCTs and cohorts).