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Table 1 The timings of peak muscle forces and peak EMG signals in the gait cycle [force timing % (EMG timing %)]

From: Lower limb joint motion and muscle force in treadmill and over-ground exercise

  Stride frequency Gastrocnemius Rectus Soleus Vastus
Treadmill 100 38% (22%) 56% (13%) 49% (23%) 56% (55%)
120 37% (31%) 51% (27%) 47% (32%) 57% (63%)
140 27% (27%) 43% (10%) 22% (28%) 5% (9%)
160 23% (86%) 39% (18%) 21% (36%) 6% (19%)
Over-ground 100 34% (38%) 54% (38%) 44% (38%) 54% (42%)
120 31% (17%) 46% (39%) 38% (17%) 48% (44%)
140 17% (20%) 49% (19%) 17% (19%) 4% (12%)
160 20% (16%) 34% (20%) 20% (16%) 5% (9%)