Inter-segmental coordination patterns in Parkinson's disease are particularly disturbed during preferred walking speed: a data-driven network approach.
Karolina Saegner, Robbin Romijnders, Inga Ruff and 5 others
PMID 41387909WHAT IT FOUND
People with Parkinson's disease show severely disturbed whole-body coordination during their preferred walking speed, but much less so when walking fast or slow.
The overall movement structure remains intact, but variability is higher, suggesting the automatic nature of normal-speed walking is the main challenge.
Key findings
01Coordination deficits were most apparent at preferred walking speed, affecting local, multi-segmental, and whole-body patterns in forward and side-to-side directions.
02At fast and slow walking speeds, significantly fewer coordination patterns differed between groups compared to preferred speed, with some patterns even showing stronger coordination in the disease group during fast vertical movement.
03The fundamental structure of inter-segmental coordination was similar between groups, but variability was consistently higher in people with Parkinson's disease.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
Participants with PD were tested only in their 'ON' medication state, so results may differ off medication. The study used short, straight walks in a controlled lab environment without obstacles or cognitive dual-tasks, which may not reflect daily life. The group had high variability in disease severity and a relatively high proportion of participants without clear side-to-side symptom differences (lateralization). This was a cross-sectional comparison, so it cannot determine if these coordination patterns change over time or cause falls.
Declared interests
The study was funded by Universitätsklinikum Schleswig-Holstein - Campus Kiel. No other conflicts of interest were declared.
The easy way to misread this
Do not conclude that fast walking is a safe or effective strategy for all patients. The study found that while coordination patterns looked 'better' (more similar to controls) at fast speeds, this might reflect stiffening or compensatory rigidity rather than improved control, and the study did not measure fall risk or endurance.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →