Vestibular Stimulation Versus Foot Intrinsic Muscle Exercises in Children With Down Syndrome (VESTIB-FIME)

Down syndrome (DS) is a genetic disorder commonly associated with hypotonia, ligamentous laxity, impaired postural control, motor incoordination, and balance difficulties. These impairments can negatively affect functional mobility and participation in activities of daily living. Balance is one of the major functional domains affected in children and adolescents with Down syndrome. Postural instability may result in increased displacement of the center of mass during gait and center of pressure during standing, which can further affect gait performance, transfers, and other functional activities.

Pes planus (flat foot) is also frequently observed in individuals with Down syndrome and may contribute to impaired balance, physical activity, and quality of life. Vestibular stimulation exercises (VSE) provide repetitive sensory information regarding body position, movement, and orientation in space and may improve postural control and balance. Similarly, foot intrinsic muscle exercises (FIMEs) aim to strengthen the muscles responsible for foot stability and may improve foot function, postural control, gait, and functional mobility.

Previous studies have reported beneficial effects of vestibular stimulation and foot intrinsic muscle exercises when used independently in individuals with Down syndrome or balance-related impairments. However, there is limited research directly comparing these two approaches in children with Down syndrome. Therefore, this study will compare the effects of vestibular stimulation exercises and foot intrinsic muscle exercises on balance and functional mobility in children aged 4-15 years with Down syndrome.

Balance will be assessed using the Pediatric Balance Scale (PBS), while functional mobility will be evaluated using the Timed Up and Go (TUG) test. The study aims to determine which intervention provides greater improvement in balance and functional mobility. The findings may help physiotherapists and rehabilitation professionals select an appropriate exercise approach for children with Down syndrome and contribute to the development of more effective pediatric rehabilitation strategies.