Comparison of accelerometer-based and treadmill-based analysis systems for measuring gait parameters in healthy adults.
Seung-Yeop Lim, Wan-Hee Lee
PMID 28533603WHAT IT FOUND
In 23 healthy adults, accelerometer and treadmill gait measures were strongly related for cadence, steps, speed and timing.
The study did not test people with impaired gait.
Key findings
01The paper reported strong correlations between the accelerometer and treadmill systems for cadence (correlation coefficient 0.995) and number of steps (correlation coefficient 0.983).
02Accelerometer speed and treadmill velocity were strongly correlated (correlation coefficient 0.838).
03Accelerometer gait cycle duration was strongly correlated with treadmill step time (left side 0.983, right side 0.975) and stride time (0.994).
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
All participants were healthy adults in their 20s or 30s, so the results may not apply to patients with impaired gait. Only 23 people were studied. Only one accelerometer device and one treadmill device were tested. The study compared two systems by correlation in healthy adults, not in patients.
The easy way to misread this
Do not conclude that the accelerometer system can replace treadmill gait analysis for patients with walking problems. The study only measured 23 healthy adults, and the authors noted it might be difficult to generalize the correlations to patients with impaired gait.