Achilles tendon thickness reduces immediately after a marathon

Abstract

Abstract Background The purpose of the present investigation was to evaluate the immediate effect of running a marathon on Achilles tendon anteroposterior thickness. Methods In 25 runners who took part in the London marathon, ultrasonography was used to measure the Achilles tendon thickness pre- and immediately post-marathon and to identify any structural abnormalities indicating tendinopathy. Pain was recorded using a numerical rating scale at baseline and post-marathon. Twenty-one participants were included in the final analysis. Results Running a marathon resulted in a significant decrease (− 13%, p 0.05). Conclusion Running a marathon resulted in an immediate reduction in anteroposterior diameter of the Achilles tendon. This finding may have implications for injury prevention and recovery following a marathon.

Keywords

• Achilles tendon
• Fluid flux
• Marathon
• Tendinopathy
• Ultrasound