Abstract
Objectives
To
examine the feasibility of combining lower extremity aerobic exercise
(AEx) with a virtual reality (VR) upper extremity (UE) rehabilitation
intervention; and 2) provide an estimate of effect size for the combined
intervention on UE function, aerobic capacity, and health-related
quality of life.
Design
Single group feasibility trial
Setting
Research laboratory
Participants
Community
dwelling individuals with mild to moderate impairment of the upper
extremity at least 6 months post-stroke (male, n=6; female n=4; mean
age = 54 years)
Intervention
All
participants received 18 sessions over a nominal 2-3 sessions per week
schedule of a combined AEx and VR-UE rehabilitation intervention. During
each session participants completed 15 minutes of lower extremity AEx
followed by playing a VR-UE rehabilitation game for approximately 20
minutes.
Main Outcome Measures
Feasibility
was evaluated by metrics of adherence, retention, treatment
acceptability, data completeness, and adverse events. UE function,
aerobic capacity (VO2peak), and quality of life were assessed
with the Fugl-Meyer Upper Extremity Assessment (FMA-UE), expired gas
exchange analysis, and Stroke Impact Scale (SIS), respectively.
Results
Adherence
was 100% and there were no withdrawals or losses to follow-up to
report. Participants completed the intervention in 49 ± 14 days. Cohen's
dz effect size calculations indicated the intervention elicited medium effects on FMA-UE (dz = 0.50), SIS memory domain (dz = 0.46); and large effects on absolute VO2peak (dz = 1.46), relative VO2peak (dz = 1.21), SIS strength (dz = 1.18) and SIS overall recovery domains (dz = 0.81).
Conclusions
Combining
lower extremity AEx and VR-UE rehabilitation appears feasible in the
clinical research setting. Fifteen minutes of lower extremity AEx
performed at vigorous intensity appears to elicit clinically meaningful
benefits in chronic stroke. Further examination of the combining lower
extremity AEx and VR-UE rehabilitation and its effects on physical
function and quality of life is warranted.
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