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. Author manuscript; available in PMC: 2015 Sep 22.
Published in final edited form as: J Biomech. 2014 Aug 8;47(12):2831–2835. doi: 10.1016/j.jbiomech.2014.07.032

Figure 1.

Figure 1

An overview of the experimental setup and image analysis. Inertial disks were used to induce eccentric plantarflexor contractions when moving from a plantarflexed to dorsiflexed position. An ultrasound transducer placed over the distal Achilles tendon was used to collect RF data throughout the cyclic trials. In post-hoc analysis, initial nodal positions were defined within the tendon from an image collected in the most plantarflexed position. Two-dimensional elastography was then used to track the subsequent motion of nodes located in superficial, mid and deep portions of the tendon.