Figure 3.

Means and standard deviations (error bars) of vertical GRF (% bodyweight) from eight gait cycles during comfortable walking for 59- and 73-year-old stroke patients (A,B), respectively. Outcomes are presented for the paretic and non-paretic legs—the vertical GRF of healthy gait is also included as a visual reference of “normality”. The GRF of healthy gait was derived from eight elderly volunteers recruited from the community who had no medical conditions that could have limited their walking ability.