Reliability of measurement reliability and optimal number of measurements for mental arithmetic reaction time test.
Mingdong Zhang, Changsheng An, Haomin Zhang and 4 others
PMID 32753788WHAT IT FOUND
Mental arithmetic reaction times stayed consistent when older adults answered simple math while standing or walking freely.
Using 10 valid questions gave stable readings in both conditions.
Key findings
01The mental arithmetic response time test gave similar results across repeated measurements in quiet standing and free walking.
02Using 10 valid questions was associated with the highest reported consistency in quiet standing and free walking.
03The authors suggest the test may serve as an objective assessment of attention distribution in older adults.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study only examined measurement consistency, not whether the test predicts falls or guides treatment. The participant table conflicts with the methods in sample size and age, so the reported participant details cannot be fully trusted. All participants were healthy seniors screened for serious attention distribution disorder, so the result may not apply to people with obvious attention or walking problems. The paper does not report dropouts or missing data handling.
Declared interests
No funding or conflicts of interest were reported.
The easy way to misread this
Do not conclude that this test prevents falls or improves balance. It only reports repeatable measurements of reaction time in 30 healthy seniors, and no fall outcomes were tested.