Muscle Synergies in Chronic Ankle Instability During Landings
Author Information
Author(s): Zhou Zhifeng, Xu Datao, Wang Meizi, Jie Tianle, Baker Julien S., Zhou Huiyu, Gu Yaodong
Primary Institution: Ningbo University
Hypothesis
CAI patients will exhibit significant changes in their muscle-specific functional roles during unanticipated landings compared to anticipated landings.
Conclusion
CAI patients display distinct muscle synergy patterns during unanticipated landings, relying more on proximal muscles to maintain stability.
Supporting Evidence
- CAI patients show higher activation of proximal muscles during unanticipated landings.
- Muscle synergy patterns differ significantly between anticipated and unanticipated landings.
- Proximal muscles are crucial for stability in CAI patients during unexpected landings.
- CAI patients rely on gluteus maximus and vastus lateralis more during unanticipated tasks.
Takeaway
People with chronic ankle instability use different muscles when landing unexpectedly compared to when they know how they're landing, which helps them stay stable.
Methodology
The study analyzed muscle synergy patterns in 20 CAI patients during anticipated and unanticipated landing tasks using non-negative matrix factorization and K-means clustering.
Potential Biases
Potential bias due to the small sample size and lack of control group.
Limitations
The small sample size may affect the determination of optimal muscle synergies and the study lacks comparison with a healthy control group.
Participant Demographics
20 participants with chronic ankle instability.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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