Analysis of Trunk Muscle Activity in Hemiplegia During Sitting on Two Different Unstable Surfaces Sharma Indira1, Radhika C.M.2,*, Sivakumar R.3, Venkatesh N.4 1Post Graduate, Faculty of Physiotherapy, SRMC & RI 2Asst. Professor, Faculty of Physiotherapy, SRMC & RI 3Principal, Faculty of Physiotherapy, SRMC & RI 4Course Chairman, Faculty of Physiotherapy, SRMC & RI *Corresponding Author: Radhika C.M., Asst. Professor, Faculty of Physiotherapy, SRMC & RI, Porur, Chennai-116, e-mail: radhikaderose@gmail.com
Online published on 23 December, 2019. Abstract Background Following stroke, the abdominal muscles demonstrate a remarkable loss of activity. This is characterized by asymmetry in performance of rotation and side bending activities. Paralysis of the core muscles increases the tendency to fall towards the paralyzed side causing asymmetry. Trunk function along with balance and walking ability has been a valid predictor of stroke rehabilitation outcome. The aim of the study is to analyze the trunk muscle recruitment in hemiplegic stroke subjects sitting on two different unstable surfaces. Method 30 subjects who fulfilled the inclusion criteria were considered for the study. Out of which 15 subjects were normal individuals and 15 were hemi paretic stroke subjects. Subjects in both the groups were tested for external oblique and erector spinae muscle recruitment during set of activities like flexion, extension and lateral flexion of trunk. They were made to sit on Swiss ball and wobble board, and the muscle activity was recorded in paretic side and non-paretic side in stroke patients, right and left side in normal individuals. Average EMG value was recorded in (micro-volt), Un-paired t test and Mann-Whitney U test was used for significancedifference. Result Data was analyzed using SPSS version 16. In normal Individuals both external oblique and erector spinae muscle activity on the two unstable surfaces was similar and did not show any significant difference. Muscle recruitment on paretic and non-paretic side showed significant difference for both Erector Spinae and external oblique muscle. Result reveals that there was no significant difference between Swiss ball and wobble board both in external oblique and Erector Spinae muscle recruitment. Conclusion Trunk muscle recruitment during activity on wobble board had similar effect as Swiss ball. Hence we concluded that wobble board can be used as adjunct to Swiss ball for balance training in Stroke patients. Top Keywords Trunk muscle activity, unstable surfaces, EMG, Swiss ball, wobble board, stroke patients. Top |