Validity and Reliability of an Immersive Virtual Reality System for Multidimensional Assessment of Cervical Sensorimotor Control: Cross-Sectional Study.

The system was tested only in 30 healthy young adults, so it does not show that the measurements work in older people or people with chronic neck pain. The VR sway values were consistently higher than the reference values, so absolute sway numbers from the two systems are not interchangeable. Compensatory head and trunk motion cannot be fully excluded, especially during lateral bending, because the system tracked only the head. The head-tilt response task was excluded from validity testing, so its accuracy against a reference was not checked. Participants who wore glasses needed contact lenses, which may limit use in people with visual problems or low tolerance for VR. The novelty of VR, headset fit, visual delay or cybersickness could affect results, and none were reported. The study did not test whether the system can detect change after treatment or predict outcomes.

Do not conclude that this VR system can be used to assess people with neck pain. It was tested only in 30 healthy young adults, and the authors state the results may not generalize to older people or those with chronic neck pain.