Twelve studies met the inclusion criteria (n=410 participants, range 2 to 112).
Trial quality was variable. Nine of the 12 trials were judged not to have met at least one of the four trial quality criteria. No trial fully met all criteria.
Specific physiotherapy interventions (four trials, n=111 participants): Three of the four studies used Berg Balance Scale and showed significant improvement in this measure.
Physiotherapy and aerobic exercise (one trial, n=112): Three treatment groups in which some form of physiotherapy or aerobics-based intervention was conducted twice weekly for two months were compared to a control group where there was no intervention. Two of the three groups reported statistically significant improvement in impairment scores using the expanded disability status scale.
No statistically significant improvements were reported for aerobic exercise (three trials, n=60), resistance training (two trials, n=54) and other interventions (two trials, n=73).