Heart-Brain Retraining for Stroke Rehabilitation
Heart-Brain Retraining for Stroke Rehabilitation
The purpose of this study is to gain a better understanding of how different types of
 exercise can help people after a stroke. The investigators want to study if different types
 of exercise will improve the use of arm and hand function after a stroke.
Stroke is the leading cause of disability in the United States with approximately 795,000 new
 or recurrent strokes per year. An estimated two thirds of patients post-stroke cannot
 incorporate the affected upper extremity (UE) into their activities of daily living. In
 addition, stroke survivors experience a 60% decrease in cardiovascular capacity, which
 contributed to disability and diminished quality of life. Developing rehabilitation
 techniques to optimize motor recovery while improving cardiovascular endurance would benefit
 the stroke population.

 Animal studies using a forced exercise (FE) paradigm, in which the rodent is exercised on a
 motorized treadmill at a rate greater than its voluntary rate, indicate an endogenous
 increase in neurotrophic factors such as brain-derived neurotrophic factor (BDNF) and
 glial-derived neurotrophic factor (GDNF). These neurotrophic factors are thought to underlie
 neuroplasticity and motor learning. It is hypothesized that patients with stroke, due to
 decreased motor cortical output, cannot sustain high rates of voluntary exercise necessary to
 trigger the endogenous release of neurotrophic factors; therefore, forced-exercise is
 necessary to augment their voluntary efforts and will be superior to voluntary exercise in
 facilitating motor recovery. When coupled with repetitive task practice (RTP) of the UE, an
 effective form of UE rehabilitation, FE will prime the brain for neuroplasticity. We have
 developed a safe and effective method of delivering forced-exercise to Parkinson's disease
 (PD) patients (NIH R21HD056316). Clinical and imaging data with PD patients indicate
 forced-exercise, but not voluntary exercise, triggers a neurophysiologic response in the
 central nervous system resulting in global improvements in motor and non-motor functioning
 and increased cortical and subcortical activation. The aim of this project is to conduct a
 preliminary trial to compare the effects of forced to voluntary exercise when coupled with
 RTP in promoting the recovery of motor function in patients with stroke.
Inclusion Criteria:

 -  Able to provide informed consent

 -  Within 6-12 months of diagnosis of single ischemic or hemorrhagic stroke, confirmed
 with neuroimaging

 -  Fugl-Meyer Motor Score 19-55 in involved upper extremity

 -  Approval from patient's primary care physician

 -  Age between 18 and 85 years

 Exclusion Criteria:

 -  Hospitalization for myocardial infarction, congestive heart failure, or heart surgery
 (CABG or valve replacement) within 3 months of study enrollment

 -  Serious cardiac arrhythmia

 -  Hypertrophic cardiomyopathy

 -  Severe aortic stenosis

 -  Cardiac pacemaker

 -  Pulmonary embolus

 -  Other medical or musculoskeletal contraindication to exercise

 -  Significant cognitive impairment (unable to follow 1-2 step commands) or major
 psychiatric disorder (major depression, generalized anxiety) that will cause
 difficulty in study participation

 -  Anti-spasticity injection (botox) in upper extremity within 3 months of study
 enrollment

 -  Pregnancy