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. Author manuscript; available in PMC: 2015 Feb 7.
Published in final edited form as: J Biomech. 2013 Dec 3;47(3):687–693. doi: 10.1016/j.jbiomech.2013.11.044

Figure 2.

Figure 2

Fiber Preconditioning. Each fiber underwent 40 cycles of a 2Hz sinusoidal length change with maximum and minimum amplitudes of 1.5Lo and 1.1Lo respectively (Fig. 2A). The frequency was increased to 10Hz and the cycle was repeated. A third round of preconditioning was performed by a) applying a ramp hold test to 1.5 Lo at a lengthening rate of 0.1 L․o/s, b) increasing the lengthening rate to 10 Lo/s and lengthening to 1.5 Lo, and c) repeating step a) (0.1’) (Fig. 2B). Discordant measurements between steps a) and c) indicated structural compromise of the fiber and the specimen was discarded and data was not included in the final analysis.