Comparative Effects of Unstable Surfaces and Bobath Based Trunk Exercises on Trunk Impairment, Postural Control and Balance in Stroke Patients.

Trunk control and sitting balance are often impaired after stroke. Patients who are able to sit independently in the early stages after a stroke seem to have greater chances of walking independently at discharge. These impairments are characterized by a diminished siting balance, trunk coordination and muscle strength. In contrast to the extremities, the trunk is bilaterally impaired. Therefore, both the paretic and non-paretic side of the trunk are characterized by reduced activity levels, delayed onset times, and diminished synchronization of the trunk musculature. Therefore, knowledge concerning changes in trunk biomechanics after stroke should be increased so that they can be addressed adequately in therapy. Impaired balance and postural control are an important clinical feature after stroke.

So, incorporating exercises aiming to improve trunk control early in a stroke rehabilitation program should be beneficial for regaining activities of daily living. Trunk rehabilitation is an effective strategy for improving trunk control and sitting balance in addition to finding carryover effects on standing balance and mobility. Swiss ball is widely used for recreational & rehabilitation training programs. As the liable surface of the Swiss ball provides greater challenge for the dynamic balance, co-ordination and trunk control. Swiss exercises facilitate postural control, trunk control, sitting & dynamic balance control by reducing impaired balance & co-ordination by maintaining interaction between nervous system, musculoskeletal system & contextual effects. The Bobath Concept is referred to as the neuro-developmental technique (NDT) worldwide. Stroke patients shall actively participate in exercises assisted by the therapist. Therapists use key points of handling and reflex inhibiting patterns for performing exercises. Bobath approach works on the different types of movement dysfunctions and is based on the active involvement of the patients so that they can develop motor control. This type of therapy incorporates improved functional control and independence. NDT/Bobath concept has been recognized as a treatment for stroke patients with movement dysfunctions. Despite numerous studies investigating rehabilitation techniques for post-stroke patients, there is a notable gap in directly comparing the effects of unstable surface and Bobath-based trunk exercises on trunk impairment, postural control, and balance. Literature is also available about the effectiveness of each intervention in isolation, but according to researcher's knowledge, studies on the comparative effect of these two interventions on trunk control, posture and balance and determining the long-term effects of both types of intervention in stroke have not been conducted yet. So, this study aims to compare the effects of unstable surfaces and Bobath approach on trunk coordination, balance and functional enhancement in patients with stroke.