Fifty-eight recreational runners with chronic Achilles tendinopathy at the midsection of the tendon were randomly assigned into 1 of 3 groups to determine if whole body vibration training resulted in greater improvements in pain, structural changes, muscle flexibility, and strength of the triceps surae muscle-tendon unit than those obtained through eccentric training or a wait and see approach. The results of the study indicated that pain improvements at the midsection of the tendon were greater in the vibration and eccentric training groups than in the wait and see group. However, improvements in pain at the musculotendinous junction were greater in the eccentric training group than in both of the other treatment methods. More sonographic improvements were observed in the vibration group than the eccentric, but a statistical difference was not found between them.