What do systematic reviews say?

acceptability and safety of treadmill training ‐ Active control group (co‐interventions were similar in both groups) Number of adverse events and drop‐outs · people with Parkinson's disease

acceptability and safety of treadmill training ‐ No intervention control group (co‐interventions were not similar in both groups) Number of adverse events and drop‐outs · people with Parkinson's disease

Activity Gait speed · people with Parkinson's disease

walking distance in m (at the end of study; all studies) ‐ Active control group (co‐interventions were similar in both groups) Measures of timed gait. Scale from: 0 to inf. · people with Parkinson's disease