Objective:

To investigate biomechanical factors and running volume that may predict the risk of developing Achilles tendinopathy in runners.

Key Findings:

• 23 participants developed new Achilles tendon injuries over 12 months, with a higher incidence in runners (3.8%) compared to nonrunners (0.8%).
• Every 7.8-mile increase in weekly running distance raised the risk of Achilles tendinopathy by 67%.
• Stronger inward-rolling force during the stance phase was associated with a lower risk of injury.
• Foot strike patterns did not significantly influence injury risk.

Interpretation:

The study suggests that monitoring running volume and specific ankle mechanics may help in designing effective injury prevention strategies for runners.

Limitations:

• The study did not find age and sex to be statistically significant predictors after adjustments.
• Potential bias due to the involvement of a co-author with a commercial interest in the biomechanical software used.

Conclusion:

Higher weekly running distances significantly elevate the risk of Achilles tendinopathy, while certain ankle mechanics may provide protective factors against injury.