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Highlights ► Motor control of fast squatting movements after stroke is influenced by poor timing of muscle activity, reduced muscle activity and excessive cocontraction. ► The postural adjustments are disrupted after stroke, with the timing of peak COP displacements occurring after the timing of the peak acceleration and deceleration of the knee, compared with the tighter coupling in timing in healthy controls. ► Subjects with higher motor recovery after stroke demonstrated an adaptive strategy with an earlier initiation of the paretic leg in fast squatting movements whereas the low motor recovery group depended on the non paretic leg to compensate for the delayed onset of muscle activity.