Reliability of the infrared motion-time acquisition system for each motion segment in the timed up-and-go test.
Bin Zhou, Shuangyan Shao, Huilin Liu and 4 others
PMID 34393367WHAT IT FOUND
An infrared system measured TUG segments in healthy young adults with high repeatability.
It did not test fall prediction or older patients, so it cannot yet guide clinical fall risk assessment.
Key findings
01The infrared system recorded timing for the total TUG and all five motion segments with intraclass correlation coefficients greater than 0.9 for both the same tester on different days and different testers.
02The study only included healthy adults aged 25.1 years on average who had not fallen in the past year.
03The authors state the system is cheap, simple to install, and does not require participants to wear additional devices.
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 study only included healthy young adults with no history of falls, so the reliability results may not apply to older adults or people with conditions like stroke or Parkinson's disease. The study tested measurement consistency, not whether the system improves fall prediction or clinical outcomes. The authors state this is a preliminary exploration and that future studies need to test other populations.
Declared interests
The authors provided the funding for this study and declared no conflicts of interest.
The easy way to misread this
Do not assume this infrared system is ready for clinical use in fall risk assessment. The study only showed it measures time consistently in healthy young adults, not that it helps predict falls in the populations who need TUG testing.