Comparison of Frequency Spectrum of Ground Reaction Forces and Electromyography ‎Activities in Cerebral Palsy with Healthy Children During Walking

Document Type : Original Article

Authors

1 Department of Physical Education and Sport Sciences, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran

2 Department of Physical Education and Sport Sciences, Faculty of Educational Sciences and Psychology, Islamic Azad University, Yasouj, Iran

3 Department of Physical Education and Sport Sciences, Tabriz Islamic Azad University, Tabriz, Iran

Abstract

Purpose:
The aim of this study was to compare the frequency of ground reaction forces and electromyography activities in healthy children with cerebral palsy while walking.
Methods:
This study was quasi-experimental. Study population included 12 boys with cerebral palsy and 12 healthy boys with age range of 6-10 years. The force plate (Kistler) was used to record ground reaction forces during walking. A wireless electromyography system with 8 pairs of dipole surface electrodes was also used to record Electromyography activity of selected lower limb muscles during walking.
Results:
The results showed that the frequency with 99.5% power (P=0.004) and number of anterior-posterior essential harmonics of the cerebral palsy group compared to the healthy group were 41.58% and 32.83% higher, respectively. The frequency with 99.5% power in ertical direction was 40.94% higher in cerebral palsy group compared to healthy group (P = 0.004). Frequency with 99.5% power in the component of free torque in cerebral palsy group was 27.57% more than control group. Mean frequency of anterior tibialis muscle, internal gastrocnemius, biceps femoris and medial serine in the cerebral palsy group compared with the healthy group were 31.67%, 19.63%, 21.96% and 26.70% lower, respectively.
Conclusion:
The results showed that the median frequency of lower limb muscles was lower in children with cerebral palsy than in healthy children. It can be stated that the frequency spectrum content of ground reaction forces and electromyography activities is of clinical value. Therefore, the application of therapeutic interventions to improve the frequency spectrum indices of ground reaction forces and electromyography activities in children with cerebral palsy is suggested.

Keywords

References

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Journal of Paramedical Sciences & Rehabilitation
Volume 10, Issue 2
September 2021
Pages 83-96

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