Deficient Muscle Coordination Patterns of Reactive Stepping Responses in People With Chronic Stroke.
Wouter Staring, Lotte van de Venis, Sarah Zandvliet and 4 others
PMID 40948319WHAT IT FOUND
People with chronic stroke showed poorer muscle coordination and shorter, less stable steps when stepping with the paretic leg, especially sideways or backward.
Training should prioritize these directions. If paretic stepping is too difficult, consider training non-paretic cross-stepping as an alternative.
Key findings
01Paretic steps had smaller leg angles and shorter lengths in lateral and posterior directions compared to healthy controls, indicating poorer step quality.
02Specific muscle synergies involving hip abduction (SW5) and tibialis anterior/rectus femoris (SW2) were less frequently expressed in the paretic leg.
03Participants lacking the SW2 synergy were significantly more likely to have fallen in the previous year.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study included only individuals with relatively good motor recovery (able to walk independently), so findings may not apply to those with severe mobility impairments. The perturbation intensity was fixed for all participants, which may have been too easy for those with mild deficits and too difficult for those with moderate deficits, potentially masking the full range of coordination issues. The number of participants included in the muscle synergy analysis for the paretic leg was small (20 out of 32), limiting the generalizability of the specific synergy findings. This was a cross-sectional analysis of baseline data, so it describes current deficits but does not show whether training can correct these specific muscle coordination patterns.
Declared interests
The authors declared no conflicts of interest. The study was funded by a Netherlands Organization for Scientific Research (NWO) VIDI grant.
The easy way to misread this
Do not interpret the association between missing muscle synergies and fall history as proof that correcting these specific patterns will prevent falls, as this was a cross-sectional study without training outcomes.
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 →