Impact of Trunk Flexion on Cervical Muscle Response in Whiplash
Author Information
Author(s): Shrawan Kumar, Robert Ferrari, Yogesh Narayan, Edgar Vieira
Primary Institution: University of Alberta
Hypothesis
How does trunk flexion affect the cervical muscle response during right anterolateral impacts?
Conclusion
Trunk flexion reduces the cervical muscle response during anterolateral impacts compared to neutral posture.
Supporting Evidence
- Trapezius EMGs increased with acceleration during impacts.
- Muscle responses were lower in flexed trunk positions compared to neutral.
- No reported symptoms in volunteers after the impacts.
Takeaway
When you lean forward during a car crash, your neck muscles don't work as hard, which might help prevent injury.
Methodology
Twenty volunteers were subjected to right anterolateral impacts while their trunk was flexed at different angles, and muscle responses were measured using EMG.
Potential Biases
Potential bias in volunteer selection and the controlled environment of the study.
Limitations
The study only examined low-velocity impacts and may not apply to higher velocity scenarios.
Participant Demographics
20 healthy volunteers (10 males and 10 females) with a mean age of 23.6 years.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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