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Within each fatigue damaged level, mechanical properties changed significantly from baseline cycle to endpoint cycle (* denotes p<0.05). At both Low and Moderate fatigue, stiffness increased and hysteresis decreased. Conversely, at High fatigue, stiffness loss and hysteresis increase were observed. Changes in both stiffness and hysteresis were significant between High and the lower levels of fatigue (— denotes p<0.05).
