Table Appendices: (Table 7.3)

Verbal Expression and Discourse

Individual Studies

Table 7.3 Treatments Used to Improve Verbal Expression and Discourse Post ABI

Lee Silverman Voice Treatment (LSVT®)

Author/Year/ Country/Study design/PEDro and D&B Score





Wenke et al.,






N=26Participants were randomized to either the LSVT (n=13) or TRAD (n=13) treatment groups. Both treatments were administered for 1 hour each day/4 days per week/4 weeks. Home work assessments were given each day and took about 5-10 minutes to complete. Maintenance exercises were given for the 6 months post interventions.

A comparison of the groups found no significant differences on the ASSIDS, although both group did increase mean percent work intelligibility following treatment. There was a 6% increase in the LSVT group and a 3.5% increase in the TRAD group. Those in the LSVT group also demonstrate a slower speaking rate following the intervention compared to the TRAD (p<0.015). Following treatment, speech in the LSVT group was easier to understand compared to pre-treatment. Although the speech of those in the TRAD group was easier to understand post treatment, the improvement was not found to be statistically significant. Differences between the two groups were also not found to be statistically significant. Even though there were some differences between the two groups on performance, these differences were not statistically significant. Results of the AusTOMs indicate both groups showed improvement following treatment; however, statically significant differences were not found between the groups.

Yes/No Training in ABI

Author/Year/ Country/Study design/PEDro and D&B Score





Barreca et al., (2003)



PEDro = 6

D&B = 19


N=13ABI patients who were unable to provide a consistent yes/no response 80% of the time, were assigned to A or B treatment group.  Group A received an enriched stimulus environment, collaborative multi-disciplinary intervention, and additional yes/no response training. Group B received a standard hospital environment and interventions.

No order effect (AB vs BA) (p=.06) but a treatment trend was found (A vs B. p=.07) for treatment over control.  Significant increased responsiveness for four patients following treatment A (p<.001).  No significant differences in Western Aphasia Battery (WAB) scores between treatments at admission or 6 months later (p>.05).

PEDro = Physiotherapy Evidence Database rating scale score (Moseley et al., 2002).

D&B = Downs and Black (1998) quality assessment scale score.