Effect of Sit-to-Stand Training on Balance, Muscle Strength, and Activities of Daily Living in Patients with Stroke: A Randomised Controlled Trial

Abstract

Introduction: Patients who have had a stroke often experience issues with static balance while sitting and standing. Additionally, they may encounter problems with dynamic balance, particularly when transitioning between sitting and standing positions, leading to reduced postural stability in both static and dynamic standing. This also contributes to weakness in the affected lower limb and decreased engagement in Activities of Daily Living (ADL). Nevertheless, few studies have investigated the impact of sit-to-stand training on balance, muscle strength, and ADL in stroke patients. Aim: To assess the impact of sit-to-stand training on balance, muscle strength, and ADL in patients who have had a stroke. Materials and Methods: This trial was an experimental, parallel, and assessor-blinded allocation with a computer-generated randomisation sequence. Sixty-six stroke patients (33 in each group) were enrolled from the inpatient Department of Medicine and the neurosurgery ward of Justice KS Hegde Charitable Hospital in Deralakatte, Mangaluru, Karnataka, India based on specific selection criteria. The trial was conducted from March 2022 to March 2023. Inclusion criteria included patients who had experienced a stroke involving the Anterior Cerebral Artery (ACA) and Middle Cerebral Artery (MCA), encompassing both ischaemic and haemorrhagic types of stroke, aged between 35-60 years, and including both male and female stroke patients who were able to effectively communicate and comprehend instructions. Other criteria included a Mini-Mental State Examination (MMSE) score greater than or equal to 23, the ability to independently have a transition from a supine position to a seated position, and a minimum score on the trunk impairment scale. In the experimental group, participants received sit-to-stand training for 45 minutes over five days, while the control group received conventional physical therapy, including tandem walking, single leg stance, double leg stance, early mobilisation, position and balance training exercises for 45 minutes over five days. The primary outcomes used for balance assessment were the Berg Balance Scale (BBS), and for ADL, the Barthel Index (BI) Scale was used, with muscle strength being measured using a push and pull dynamometer. The independent sample t-test was used to compare between groups, and within-group comparisons were conducted using the paired t-test. A p-value <0.05 was considered significant. Results: Significant differences (p-value=0.044) were observed in BBS score and muscle strength between the groups during both the pretest (Day-1) and post-test (Week-1). The BI exhibited a significant difference (p-value=0.016) during the post-test (Week-1) only. Additionally, a significant difference (p-value<0.001) was found in muscle strength, specifically in the Hip Extensors (HE) between the groups. Conclusion: The results of the current study showed a statistically significant difference in muscle strength of the HE. However, no significant difference was observed in BI and BBS between the groups. No side-effects or harms were reported, indicating that the approach is safe and feasible for stroke patients.