Exploring Inertial-Based Wearable Technologies for Objective Monitoring in Sports-Related Concussion: A Single-Participant Report.
Dylan Powell, Samuel Stuart, Alan Godfrey
PMID 35196371WHAT IT FOUND
A wearable sensor on the lower back tracked gait and sleep in one rugby player recovering from concussion.
The device was tolerated and detected step variability changes that the standard paper-based assessment missed. This is a feasibility report, not evidence that the technology improves care.
Key findings
01The wearable device detected increased step time variability and asymmetry in the player's gait after concussion and at follow-up, changes that were not captured by the standard clinical assessment.
02Visual analysis of movement data suggested the player had poorer sleep quality (more frequent movement) immediately after injury compared to one month later.
03The study was limited to a single participant, so the authors explicitly stated that strong clinical conclusions cannot be drawn from these findings.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only one participant, so the findings cannot be generalized to other athletes or patients. There was no baseline assessment of the player's previous injuries, which may have affected his gait patterns. The study did not use a self-reported sleep diary to validate the wearable device's sleep estimates. The authors note that processing the sensor data requires specialized technical training, which is a barrier to clinical use. The context of the remote assessments (such as terrain or activity) was unknown and could have influenced the results.
Declared interests
The study was funded by the National Geographic Society Education Foundation. The funders played no role in the design, conduct, or reporting of the study.
The easy way to misread this
Do not interpret the wearable sensor's detection of gait variability as proof that this technology is ready for clinical use or that it definitively identifies incomplete recovery. The findings are based on a single case with no control group, and the authors state that the precise impairments to measure with these devices are still unclear.