Diagnostic changes (pre- versus post- fatigue loading) for 2.5% strain groups in elongation (a) were significantly greater in 300, 400, and 500 cycle than 50, 100, and 200 cycle groups. Changes in minimum load (b), loading slope (c), unloading slope (d), and hysteresis (e) did not vary with cycle number. Bar denotes p < 0.05.