Optimized Home Rehabilitation Technology Reduces Upper Extremity Impairment Compared to a Conventional Home Exercise Program: A Randomized, Controlled, Single-Blind Trial in Subacute Stroke.
Veronica A Swanson, Christopher Johnson, Daniel K Zondervan and 6 others
PMID 36636751WHAT IT FOUND
Patients using a sensor-based home exercise system improved upper limb function more than those using paper instructions.
The trial stopped early due to the pandemic with only 25 participants analyzed, so the result is promising but not yet definitive for routine care.
Key findings
01The FitMi group showed a significantly greater improvement in upper extremity motor function from baseline to follow-up compared to the conventional therapy group.
02There were no significant differences between the groups in secondary outcomes such as dexterity, walking speed, spasticity, or pain.
03The trial was halted early due to the COVID-19 pandemic after an interim analysis showed significant efficacy, resulting in a smaller sample size than planned.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The trial was stopped early due to the COVID-19 pandemic, resulting in only 25 participants being analyzed out of a planned 50. This significantly reduces statistical power. No female participants were recruited into the FitMi group, limiting generalizability. The conventional group had higher dropout rates (3 out of 13) compared to the FitMi group (0 out of 14), and missing data was imputed. The study did not quantify the number of repetitions performed by the conventional group, so it is unclear if the benefit of FitMi was due to the technology itself or simply higher exercise volume. The randomization used alternating block allocation, which can be prone to selection bias. The effect size was large, but the small sample size means the estimate is unstable.
Declared interests
One author has a financial interest in Flint Rehabilitation Devices, the company that produces the FitMi sensor used in the study. Another author has a financial interest in the same company. The study was funded by the National Institute on Aging and the National Institute of Independent Living, Disability, and Rehabilitation Research.
The easy way to misread this
Do not assume this technology is superior to standard care based on this single trial. The study was halted early with a very small sample size (n=25 analyzed), and the lack of difference in secondary functional outcomes suggests the primary motor impairment gain may not translate to broader functional recovery. The commercial nature of the device and author financial interests also warrant careful consideration.