Abstract
Objective
The aim of this study was to compare activation levels of rectus femoris, biceps femoris, tibialis anterior, and soleus muscles and biomechanical properties of individuals with muscle disease and healthy individuals during sit-to-stand.
Methods
Fifteen patients (11 muscular dystrophy, 4 myopathy) and 15 healthy individuals were included in the study. A Noraxon superficial electromyography device and high-speed cameras were used to evaluate muscle activations and biomechanical properties.
Results
There was a difference between the activation levels of bilateral rectus femoris, tibialis anterior, soleus, and right biceps femoris of patients and healthy subjects (p < 0.05). When groups were compared in terms of biomechanical properties, there was no difference in the range of motion during sit-to-stand (p > 0.05), but there was a difference in phase 1: flexion momentum phase, phase 3: extension phase, phase 4: stabilization phase, and total time of sit-to-stand (p < 0.05).
Conclusion
We observed that individuals with muscle disease are able to stand up in a similar sit-to-stand pattern to healthy individuals with longer duration and higher muscle activation levels. Prolonged high muscle activation during functional activities may cause fatigue and muscle destruction in patients. For this reason, planning of exercise programs for appropriate muscles and phases will enable the patients to perform the activity of sit-to-stand more easily. Thus, patients will become more functional and independent in their daily lives with less effort.
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Abbreviations
- BMI:
-
Body mass index
- EMG:
-
Electromygraphy
- MVIC:
-
Maximum voluntary isometric contraction
- SENIAM:
-
Surface EMG for non-invasive assessment of muscles
- STS:
-
Sit-to-stand
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We acknowledge all the participants with muscle disease and healthy volunteers.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Sütçü, G., Yalçın, A.İ., Ayvat, E. et al. Electromyographic activity and kinematics of sit-to-stand in individuals with muscle disease. Neurol Sci 40, 2311–2318 (2019). https://doi.org/10.1007/s10072-019-03974-5
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DOI: https://doi.org/10.1007/s10072-019-03974-5