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Figure 7 | Journal of NeuroEngineering and Rehabilitation

Figure 7

From: The influence of push-off timing in a robotic ankle-foot prosthesis on the energetics and mechanics of walking

Figure 7

Electromyography. (A) Prosthesis-side average vastus medialis electromyograms (EMG). (B) Peak vastus medialis EMG during late stance (30-60% stride). (C) Prosthesis-side average biceps femoris EMG. (D) Peak biceps femoris EMG during late stance. Bar and curve colors correspond to Time-torque onsets. Black line is Spring-like condition. Gray line is Normal Walking. Horizontal bars indicate Time-torque period. Vertical dashed lines represent mean timing of intact-side heel contact and prosthesis toe off. Error bars are inter-subject standard deviations. P-values are from repeated measures ANOVA on timing bins. Symbols inside bars indicate significant differences versus Spring-like condition. ** = p ≤ 0.01, * = p ≤ 0.05, t = p ≤ 0.1.

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