After the intervention, only participants in the strengthening group had significant reductions in centre of pressure velocity when tests were conducted on unstable surface with closed eyes (7%).Previous studies demonstrated the benefits of similar interventions in improving balance in the elderly.Hourigan et al.29 also found significant improvement when on a stable surface with closed eyes (5%) and unstable surface with opened eyes (12%),although they also included middle-aged participants.
Rogers et al.30 found significant improvements in centre of pressure oscillation after a short duration training programme.