Maetz et al. 2023, Loading versus passive treatment for midportion Achilles tendinopathy

Systematic reviews and meta-analyses of RCTs find that loading-based exercise is the best-supported treatment for midportion Achilles tendinopathy, outperforming passive modalities. Eccentric (Alfredson) and heavy-slow resistance protocols give similar outcomes. Strong (multiple RCTs and pooled analyses).