Dual Tasking in Vestibular Rehabilitation: Clinical Value and Evidence

Clinical takeaway: dual-task exercise can expose changes in gait, balance or head control that are not obvious during a single task. It can be useful when progressed carefully, but evidence in vestibular populations remains developing and there is no direct evidence that adding a head-mounted laser improves clinical outcomes.

What is dual tasking?

Dual tasking means performing a movement or balance task while completing a second cognitive or motor task. Examples include walking while counting backwards, maintaining gaze during a verbal task, or controlling head movement while responding to auditory cues. The aim is to examine or practise performance under divided attention, which more closely resembles many everyday activities.

What does the evidence show?

Research in people with vestibular disorders demonstrates cognitive–motor interference: performance can change when gait or balance is combined with a second task. A 2023 study compared functional and dual-task gait in people with vestibular disorders and healthy controls, while an earlier study found dual-task interference during gait in people with unilateral vestibular disorders.^1,2

Evidence for training effects is less direct. A 2025 systematic review and meta-analysis reported improvements in balance and gait when vestibular rehabilitation and dual-task gait training were used after stroke.³ A meta-analysis in Parkinson disease also reported improvements in dual-task gait performance after dual-task training, although neither population should be assumed to respond in the same way as a person with a peripheral vestibular disorder.⁴

Recent reviews of vestibular physical therapy identify cognitive and motor dual-task approaches as an area of clinical development, while established vestibular rehabilitation guidance emphasises individualised progression, safety and monitoring of the person's response.^5,6

Clinical application

Start with a task the person can perform safely and consistently. Add one simple secondary demand, then progress only one variable at a time. Possible progressions include:

• standing or walking while reciting a short sequence;
• gaze-stability exercise with simple mental arithmetic;
• controlled head turns while responding to verbal cues;
• changing speed, target size or support surface; and
• sport- or work-specific tasks when clinically appropriate.

Record both parts of the task. A stable walking speed with markedly worse cognitive accuracy is still dual-task interference, as is preserved cognitive performance accompanied by poorer balance or head control. Reduce or stop the challenge if safety deteriorates or symptoms are substantial, prolonged or inconsistent with the planned exercise response.

Role of head-mounted lasers

A head-mounted laser can make head movement visible on a target while a secondary task is performed. This may help the clinician observe whether directional control or target accuracy changes under divided attention. The laser itself does not measure cognition, diagnose vestibular impairment or quantify fall risk.

HeadX Kross provides crosshair visual feedback but does not digitally measure movement. HeadX Duo combines laser feedback with inertial sensing for objective movement measurements. Examples of graded head-control tasks are available in the HeadX exercise hub; they should be selected and adapted according to the individual assessment.

Limitations and interpretation

Dual-task performance is influenced by the instructions, task priority, familiarity, fatigue, environment and the difficulty of each component. Results from stroke, Parkinson disease or healthy older-adult research cannot automatically be generalised to every vestibular presentation. Use repeated measures and functional context rather than a single pass-or-fail threshold.

References and evidence review

1. The interplay between cognition, functional and dual-task gait in persons with a vestibular disorder versus healthy controls. Scientific Reports, 2023.
2. Dual task interference during gait in patients with unilateral vestibular disorders. Journal of NeuroEngineering and Rehabilitation, 2010.
3. Impact of Vestibular Rehabilitation and Dual-Task Training on Balance and Gait in Survivors of Stroke: A Systematic Review and Meta-Analysis. Journal of the American Heart Association, 2025.
4. Effects of Dual Task Training on Dual Task Gait Performance and Cognitive Function in Individuals With Parkinson Disease: A Meta-analysis and Meta-regression. Archives of Physical Medicine and Rehabilitation, 2023.
5. Updated Views on Vestibular Physical Therapy for Patients with Vestibular Disorders. Healthcare, 2025.
6. Vestibular Rehabilitation for Peripheral Vestibular Hypofunction: An Evidence-Based Clinical Practice Guideline. Journal of Neurologic Physical Therapy, 2016.

This article is for professional education and does not replace individual clinical assessment.