Increasing patient engagement during virtual reality-based motor rehabilitation.

OBJECTIVE

To investigate the influence of different design characteristics of virtual reality exercises on engagement during lower extremity motor rehabilitation.

DESIGN

Correlational study.

SETTING

Spinal cord injury (SCI) rehabilitation center.

PARTICIPANTS

Subjects with SCI (n=12) and control subjects (n=10).

INTERVENTIONS: Not applicable.

MAIN OUTCOME MEASURES: Heart rate and electromyographic activity from both legs at the tibialis anterior, the gastrocnemius medialis, the rectus femoris, and the biceps femoris were recorded.

RESULTS

Interactivity (ie, functionally meaningful reactions to motor performance) was crucial for the engagement of subjects. No significant differences in engagement were found between exercises that differed in feedback frequency, explicit task goals, or aspects of competition.

CONCLUSIONS

Functional feedback is highly important for the active participation of patients during robotic-assisted rehabilitation. Further investigations on the design characteristics of virtual reality exercises are of great importance. Exercises should thoroughly be analyzed regarding their effectiveness, while user preferences and expectations should be considered when designing virtual reality exercises for everyday clinical motor rehabilitation.