Early mobilization is a widely accepted pillar of acute hospital therapy services. In most populations, early mobility is regarded as safe, feasible, and yields positive results. A considerable amount of clinical and scientific literature has evaluated and upheld the positive effect of early mobility on patient safety, ICU delirium, duration of mechanical ventilation, hospital length of stay, functional mobility, ambulation ability, and mortality. However, most of the research in the field of early mobilization has focused on intensive care patients with multiple medical comorbidities.

The consideration of an acute stroke diagnosis in relation to the approach of acute care PT and "early mobility" is limited. The AVERT trial was novel in opening the doors to considering physical therapy's approach to acute stroke care on these dedicated stroke units, critical since earlier research surmised that complications of immobility could be estimated to account for as many as 51% of death in the first 30 days post stroke. The results of the AVERT trial, however, raised concern that very early mobilization may cause changes in cerebral blood flow and blood pressure leading to worsened stroke outcomes, increased mortality and increased rate of falls during early mobility.

From the publication of the AVERT trial, there has been a rise in clinical interest regarding the correlation of early mobility and improved functional outcomes post stroke. The majority of physical therapy studies in the acute stroke population have only examined the optimal time to begin mobilization post admission to the hospital. This project proposes the idea that patients with acute stroke may not be able to tolerate an extensive early mobility program. Instead, patients may benefit from shorter more frequent bouts of therapy early in their recovery to focus on specific areas such as seated postural control, motor recruitment strategies, and transfer training delivered in separate sessions. The investigators hypothesize that the approach of shorter, more frequent bouts of quality therapy services will negate the post stroke fatigue factor. Thus, allowing patients to progress functional mobility with improved tolerance to therapy sessions, frequent repetition, as well as implementation of motor learning principles to ensure carryover by providing distributed over massed practice. The research in the field of neuroplasticity and neuro rehabilitation illustrates the importance of high intensity, repetitive and aggressive approaches for motor recovery, however, most of this research has been performed in the subacute stroke population.

Rather than decreasing the time to upright mobility, it may be beneficial to examine the effect of short bouts of more frequent mobilization in these patients, within the early stages of their hospitalization. If, as assumed, a prolonged duration of upright sitting posture has a negative effect on cerebral blood flow10 it may be possible to gain the positive effects of early mobility by continuing to provide PT services while combating the negative effects of cerebral perfusion by returning all patients to a supine position in bed following therapy services within the first 24 hours of acute stroke. This study aims to examine the approach of increased frequency of physical therapy services as a way to gain the benefits of the publicized early mobility approach, while weighing the concerns raised by previous trials and decreasing amount of time left upright to combat negative effects of cerebral perfusion on the ischemic penumbra. As part of this study, there will be an experimental group of participants who will receive PT sessions twice a day for the first three out of five days of admission, followed by daily treatment sessions at an intensity of at least 20-50-minute bouts. This group will be compared to a group of control participants who will receive standard PT services 3-5x/wk (on average 8-23 minutes/session) while in the acute hospital setting. Outcomes of interest include average length of stay, discharge disposition, Postural Assessment Stroke Scale \& Modified Rankin Scale scores, and rate of readmission at 30 days. There is a critical need to evaluate how the mobilization approach of patients with acute stroke during their hospitalization impacts their discharge disposition, length of stay, and future functional outcomes