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Fig. 2 | Journal of NeuroEngineering and Rehabilitation

Fig. 2

From: Improvements in skilled walking associated with kinematic adaptations in people with spinal cord injury

Fig. 2

Joint angle-angle plots (cyclograms) depicting hip-knee (HK; top plots), hip-ankle (HA; middle plots), and knee-ankle (KA; bottom plots) inter-joint coordination patterns for each SCI participant pre- and post-training for both the stronger (a) and weaker limb (b). Each set of plots includes the average AB reference data (black lines) matched for the speed and BWS used by the SCI participant. Plots are ordered from left to right by worst to best SCI-FAP score among the SCI participants. Angle-angle plots were used to quantify the change in inter-joint coordination patterns by calculating the square root of sum of squared differences (SSD) between cyclograms before and after training for each participant (SSDpre-post). We also compared each SCI participants’ pre- and post-training cyclograms to the AB cyclogram (SSDnormpre and SSDnormpost) to determine the extent to which SCI individuals re-established the AB coordination pattern following training. These scores are presented above each set of cyclograms. Bigger SSD scores represent a greater difference between the cyclograms being compared. Positive values indicate flexion/dorsiflexion for all joints. AB, able-bodied; SCI, spinal cord injury; a.u, arbitrary units; SCI-FAP, Spinal Cord Injury Functional Ambulation Profile

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