Interlimb Coupling and Left Hemiplegia Because of Right Cerebral Vascular Accident

This study examined interlimb coupling in a left hemiplegic population. Participants were 20 healthy individuals and 18 individuals who were status post right cerebral vascular accident with left hemiparesis. Participants oscillated each elbow at both preferred-unilateral and preferred-symmetrical bilateral rates. One-tailed paired t-tests using frequency of oscillation and peak velocity supported the hypothesis that the unaffected limb would adapt its movement dynamics from the unilateral to the bilateral movement conditions (ps < .0125), while the affected limb did not differ its performance across the unilateral and bilateral conditions (ps > .0125). No significance (p > .0125) was found between the unilateral and bilateral performances for either of the normal group's limbs. This study suggests that during bilateral movements, the affected limb may constrain the unaffected limb. More research is needed to examine the coupling relationship between the affected and unaffected limbs and how occupation may facilitate the ability to adapt to novel situations.