Asymmetries in reactive and anticipatory balance control are of similar magnitude in Parkinson's disease patients.

•PD patients can have asymmetrical static and reactive balance control.•We investigated anticipatory balance control asymmetries in PD patients.•PD patients controlled their anticipatory balance asymmetrically.•Asymmetries in reactive and anticipatory balance control were of the same magnitude.•Reactive and anticipatory balance asymmetries may share a common pathophysiology.