Visually Induced Kinaesthetic Illusion Combined with Therapeutic Exercise for Patients with Chronic Stroke: A Pilot Study.
Ryosuke Takahashi, Motoki Koiwa, Wataru Ide and 3 others
PMID 35266005WHAT IT FOUND
Ten patients with chronic severe stroke improved finger movement, reduced wrist stiffness, and used their arm more after two weeks of visual illusion therapy followed by exercise.
No control group means these gains cannot be attributed to the illusion alone.
Key findings
01Upper limb motor function, including finger scores, improved significantly after the intervention.
02Resistance to passive movement in the wrist flexors decreased, indicating reduced stiffness.
03Participants reported increased amount of use and quality of movement of the affected arm in daily activities.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study had no control group, so improvements cannot be definitively attributed to the KINVIS intervention rather than natural recovery or the concurrent TherEX. The sample size was very small (10 patients), limiting the generalizability of the results. Participants had varying time since stroke onset (7 to 254 months), making it difficult to infer the specific effectiveness of the intervention for a uniform chronic stage. The median improvement in motor scores was small (2.5 points on FMA), raising questions about clinical significance despite statistical significance.
Declared interests
Not reported in the provided text.
The easy way to misread this
Do not conclude that the visual illusion alone caused the improvements. The patients also received 60 minutes of therapeutic exercise immediately after each illusion session, and the study lacked a control group to separate the effects of the two components.