Cochrane/loading reviews 2015, Eccentric and heavy-slow loading for 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).